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Радиоэлектронная разведка

milstar: 8 The mono-pulse or sum-difference RDF technique uses two antennas. The antennas are connected to a four-port combiner 180° hybrid that generates a sum and difference signal. Such sum and difference patterns are generated by means of closely spaced overlapping radiation patterns at boresight. These signals form sum and difference radiation patterns. The ratio of the sum and difference signals and knowledge of the sum and difference patterns are used to determine the direction of the transmitter. Phase information is used to determine on which side of the sum pattern the transmitter is. An advantage of this system is in its capability to determine the direction of a transmitter after receiving one pulse. Such pulse could be a mere few microseconds. Accuracies of 10meter over a 100Km distance has been reported. ------------------------------------------------------------- https://www.alarisantennas.com/wp-content/uploads/2020/12/An-Introduction-to-Radio-Direction-Finding.pdf https://www.alarisantennas.com/blog/an-introduction-to-radio-direction-finding/ --------------------------------------------------------------------------- Precision Receiver Inc. Precision Receivers Incorporated (PRI) New technology PRI has introduced proprietary technology to reduce spurious responses in analog to digital converter systems. All ADCs have quantization and timing errors creating spurs in the outputs of ADCs. These spurs degrade the sensitivity of Cellular, SIGINT, COMINT, ELINT and EW systems. Many schemes have been implemented to mitigate these problems such as clock dithering, but the schemes have tradeoffs and consequences including a reduction in the dynamic range of a system. PRI’s technology reduces the magnitude of all the spurs across the IF bandwidth and over the entire RF input bandwidth, nearly the entire Fs/2 as well as all the Nyquist zones. Figure 2 (next page) shows the ENOB performance of PRI’s new technology, current ADC chips and a competitor’s digitizer board. Figure 3 shows the SNR performance of PRI’s new technology. Existing competitive 2.5 GSPS systems struggles to achieve 10 effective bits or ENOB. PRIs technology achieves almost 11.5 bits of ENOB. Increased performance will serve to enhance future systems and PRI’s technology allows for an easy upgrade to existing platforms. Other BW’s are available as well as other clock rates and more ruggedized formfactors are being developed. Precision Receivers Incorporated Introduces 1st HDRR Receiver The HDRR-3.6G-12B is a single-channel signal collection and recording system incorporating PRI proprietary technology to reduce spurious responses in the analog to digital converter. The system collects and records signals across a large (>1GHz) BW. HDRR technology is described as the industry’s most effective way to improve the performance of direct-sampled receivers employed in electronic warfare, radar, signals and communications intelligence, spectrum monitoring, and wireless communications systems. HDRR technology provides an order-of- magnitude improvement in reducing unwanted spurious signals to levels previously unachievable using other methods and increases spurious-free dynamic range (SFDR) by up to 16 dB. HDRR-3.6G-12B PRI Inc 4111 Rutledge Ln, Marshall, VA 20115 Phone (202) 773-4252 info@precisionreceivers.com www.precisionreceivers.com Precision Receiver Inc. Precision Receivers Incorporated (PRI) New technology PRI has introduced proprietary technology to reduce spurious responses in analog to digital converter systems. All ADCs have quantization and timing errors creating spurs in the outputs of ADCs. These spurs degrade the sensitivity of Cellular, SIGINT, COMINT, ELINT and EW systems. Many schemes have been implemented to mitigate these problems such as clock dithering, but the schemes have tradeoffs and consequences including a reduction in the dynamic range of a system. PRI’s technology reduces the magnitude of all the spurs across the IF bandwidth and over the entire RF input bandwidth, nearly the entire Fs/2 as well as all the Nyquist zones. Figure 2 (next page) shows the ENOB performance of PRI’s new technology, current ADC chips and a competitor’s digitizer board. Figure 3 shows the SNR performance of PRI’s new technology. Existing competitive 2.5 GSPS systems struggles to achieve 10 effective bits or ENOB. PRIs technology achieves almost 11.5 bits of ENOB. Increased performance will serve to enhance future systems and PRI’s technology allows for an easy upgrade to existing platforms. Other BW’s are available as well as other clock rates and more ruggedized formfactors are being develop https://precisionreceivers.com/wp-content/uploads/2021/04/HDRR-3.6G-12B-Product-Sheet.pdf ############# SIGINT Direction finding comparsion Time Difference of Very High Precision, Very Complex, At Least 3 Aircraft; High Quality Arrival (Pulsed Signals) https://www.phys.hawaii.edu/~anita/new/papers/militaryHandbook/sig-sort.pdf WPI MQP Group: Daniel Guerin - ECE Shane Jackson - Physics Jonathan Kelly - CS/ECE Phase Interferometry Direction Finding Lincoln Laboratory https://web.wpi.edu/Pubs/E-project/Available/E-project-101012-211424/unrestricted/DirectionFindingPresentation.pdf Passive Direction Finding [DF] Techniques – DTOA (Difference Time of Arrival) Comparison Written By Riccardo Ardoino The Time-Of-Arrival (TOA) comparison measurement can be done with a two antennas receiver, a third antenna is used to eliminate ambiguity, and four antennas are used to cover 360° in Azimuth. Assuming two antennas at distance “B” between them (order 10m). Assuming incident radiation from the emitter >> B (≈ Infinite). The difference in Time of Arrival observed at the two antennas is ∆TOA, with ∆R = B x sin (DOA) equal to the optical path difference. https://www.emsopedia.org/entries/passive-direction-finding-df-techniques-dtoa-difference-time-of-arrival-comparison/

Ответов - 76, стр: 1 2 3 4 All

milstar: https://www.analog.com/media/en/technical-documentation/tech-articles/gsps-data-converters-to-the-rescue-ms-2708.pdf https://www.analog.com/en/technical-articles/gsps-data-converters-to-the-rescue-for-electronics-surveillance-and-warfare-systems.html The highest performance architecture, though, is that shown in Figure 2C. Multiple parallel RF and digitizer subsystems are implemented, and if the AD9265 is again considered, multiple adjacent 40MHz bands are observed instantaneously. By offsetting each subsystem by almost 40 MHz (some overlap is required) the instantaneous BW can be increased, but clearly this is at the expense of system cost, as the cost of the system is scaled directly with instantaneous bandwidth. Compared to an interleaved approach, the architecture has the benefit of not needing calibration or digital signal processing to remove spurs created by interleaving. Additionally, the system is more resistant to high power blocking or jamming, as the RF/IF gain for each 40 MHz band can be set independently. 65 nm CMOS processes enable higher speed digital signal processing to be implemented within the converter. For example, digital downconversion (DDC) functionality is implemented in both the AD9625 and AD9680 to enable the high speed ADC to dynamically change from providing full bandwidth to a selectable frequency subband within the digitized Nyquist band of >1000MHz. Consider the architecture shown in Figure 3, which illustrates the AD9625 2.5 GSPS, 12-bit ADC with embedded DSP options. In a wideband mode, the ADC will support surveillance of the RF spectrum in 1 GHz steps, enabling a rapid evaluation of the RF landscape. Once signals of interest are identified it is feasible to direct this data through the DDC. The DDC, using a digital numerically controlled oscillator (NCO) and filtering stages can select a band from anywhere within the Nyquist band of the converter and employ digital decimation by factors of 8 and 16 suppressing the noise floor further. Although this functionality could easily be employed in the digital signal processing stages in devices after the converter, performing this in the ADC itself helps reduce the output data rate of the ADC, and more importantly, the power dissipated in the transmission, significantly reducing the system power when the DDC is utilized. With the continued emphasis on reducing size, weigh, and power (SWaP) in aerospace and defense systems, new options for the system architect begin to open up as high speed converters continue to see improved linearity in the GSPS region. With the inclusion of digital signal processing features within the high speed converter, a wide range of options and system optimizations begin to unfold making this an exciting period for next generation surveillance systems.

milstar: https://www.analog.com/media/en/analog-dialogue/volume-50/number-4/articles/whats-up-with-digital-downconverters-part-2.pdf

milstar: he presented data were taken at RF-, LO-, and IF- frequencies of 1 GHz, 900 MHz and 100 MHz, respectively Abstract - This paper describes single-balanced passive GaAs FET mixers with different balancing principles for the lower GHz range. The mixers achieve conversion losses of about 7 dB and input third-order intercept points (IIP3) of up to 44 dBm. Port isolation values of more than 70 dB have been achieved. Different balancing topologies, design process and results are being discussed. https://amsacta.unibo.it/id/eprint/1258/1/GA051750.PDF https://www.minicircuits.com/app/AN00-003.pdf


milstar: https://www.edaboard.com/threads/whats-a-good-value-of-p1db-and-ip3-of-a-mixer.79131/

milstar: The high side upconversion causes a reversal of the frequencies, so we recommend a heterodyne system with a high side upconversion to a high IF, filtering, andd then a downcoversion to a lower IF for final processing. The other downside? You need a wideband mixer to use the high frequency LO. A wideband mixer much like the ones sold by Marki…. https://markimicrowave.com/technical-resources/application-notes/how-to-tell-when-a-spur-will-matter/

milstar: https://arxiv.org/pdf/2108.05968v1.pdf he typical performances are as follows: 0.1 GHz~ 45GHz operation spectrum range (>40 GHz), 900 MHz instantaneous bandwidth, 101 dB·Hz2/3 SFDR and 130 dB·Hz LDR, image rejections of ~80 dB for 1st frequency conversion and >90 dB for 2nd frequency conversion. The proposed approach has two distinguishing features. 1) The optical LO is generated based on a wide-band tuning laser with two major steps, the coarse locking and tuning of the LO frequency by a digital locking unit, and the real-time compensation of the residue frequency-error and the phase-noise by the 2nd frequency conversion unit and the reference extraction unit. The proposed optical LO serve has the advantages of ultra-wide tuning range (>45 GHz), excellent harmonic spurious suppression, and its implementation is relatively simple and reliability. 2) The photonic frequency conversion is based on the superheterodyne configuration. This photonic-based superheterodyne configuration has two stages of frequency conversion. In the first stage, RF signals is converted to a fixed high-intermediate frequency. In the second stage, the high-IF signal is down-converted to a low-IF. Combining with the RF processing in the front-end before EOM and the IF processing after the photoelectric detection, the proposed photonic frequency conversion shows several advantages of ultra-wide frequency conversion range (≥45 GHz), larger instantaneous bandwidth (>900 MHz), higher interference/spurious suppression capability. Acknowledgment This work was partially supported by Independent Innovation Fund of Qian Xuesen Laboratory of Space Technology, and Independent research and development projects of China Aerospace Science and Technology Corporation.

milstar: https://www.analog.com/media/en/technical-documentation/tech-articles/Not-Your-Grandfathers-ADC-RF-Sampling-ADCs-Offer-Advantages-in-Systems-Design.pdf AD9467

milstar: to: https://vm.ric.mil.ru/Redkollegiya copy for information to .... re: В России создали новые комплексы радиоэлектронной борьбы (РЭБ), которые превосходят зарубежные аналоги, заявил президент РФ Владимир Путин/. Китай ,высококачественный приемник комбинация фотоники и электронных компонентов 0.1 GHz~ 45GHz operation spectrum range, 900 MHz instantaneous bandwidth, 101dB·Hz2/3 SFDR , image rejections of ~80 dB 1. GPS Galileo диапазоны и форма сигнала известны,в радиоразведке нет необходимости ------------------------------------------------------------------------------------ Комплекс «Поле-21» был разработан в Научно-техническом центре радиоэлектронной борьбы (НТЦ РЭБ). https://topwar.ru/182196-kompleksy-rjeb-pole-21-v-rossijskoj-armii.html РАЗВЕДКА В ИНТЕРЕСАХ ОРГАНИЗАЦИИ И ВЕДЕНИЯ РЭБ Основным руководящим оперативным документом МО еще в конце 70-х годов справедливо определено, что в комплекс мероприятий РЭБ входит выявление радиоэлектронных объектов в системах управления противника. Действительно, без предварительной разведки таких радиоэлектронных объектов (выполняемой в основном разведывательными частями, а также подразделениями и средствами разведки частей РЭБ) невозможна организация радиоэлектронной борьбы в период подготовки боевых действий. А без исполнительной (непосредственной) разведки РЭС противника, выполняемой в основном с помощью разведаппаратуры комплексов радиоэлектронного подавления и комплексов самонаводящегося на излучение РЭС оружия, невозможно ведение радиоэлектронной борьбы в ходе боевых действий. ...подход (с начала 60-х и до конца 80-х гг.) состоял в том, что составной частью РЭБ считалось поражение РЭС противника любыми средствами, включая даже ядерное поражение, Михаил Дмитриевич Любин - полковник в отставке, бывший старший преподаватель кафедры РЭБ Военной академии Генерального штаба. 2. средства связи противника могут работать в диапазонах 0.001 гигагерц - 44 + гигагерц стоимость микросхемы противника ,которая позволяет создать приемник БПЛА или индивидуальный радиостанции, перекрывающий диапазон до 18 гигагерц среднего коммерческого качества всего 350 долларов без военной приемки X- and Ku-Band Small Form Factor Radio Design https://www.analog.com/media/en/technical-documentation/tech-articles/X-and-Ku-Band-Small-Form-Factor-Radio-Design.pdf 3.Зарубежные комплексы радиоразведки ----------------------------------------------------- a USA/NATO ---------------------- avia https://www.l3harris.com/sites/default/files/2022-07/L3Harris-SellSheet-RASISR-SIGINT.pdf Land,Marine The ES-5080 is a state-of-the-art, combined ELINT and ESM system. https://www.l3harris.com/sites/default/files/2020-08/l3harris-es-5080-sell-sheet-sas.pdf https://www.l3harris.com/all-capabilities/es-5080-digital-receiver-based-elintesm-system Antenna Performance 0.5 – 40 GHz standard instantaneous RF coverage with angle of arrival (AOA) on every pulse Antenna gain: 24dB at 9 GHz typical Multiple superheterodyne and digital receiver channels Selectable bandwidths (500 MHz to 2.5 MHz for each channel) 0.25 MHz RF accuracy 5 nsec PW accuracy 10 nsec PRI accuracy https://fei-elcomtech.com/wp-content/uploads/2019/11/Product-Release-SIR-4000.pdf SIR-4100 ELINT/MASINT Receiver: • Input Frequency 0.1 to 40 GHz • <100 usec in-band switching • 1.8 GHz IF Output with 1GHz BW and instantaneous bandwidth (up to 2 GHz) critical to RWR applications. два канала x 1.8 GHz IF Output with 1GHz BW ------------- b. Китай ,высококачественный приемник комбинация фотоники и электронных компонентов ---------------------------------------------------------------------------------------------------------------------------------------------------- A Photonics-based superheterodyne RF reception approach Guangyu Gao, Qijun Liang, Ziyu Liu, Huanfa Peng, Qiang Zhao, Naijin Liu Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, China https://arxiv.org/pdf/2108.05968v1.pdf typical performances are as follows: 0.1 GHz~ 45GHz operation spectrum range (>40 GHz), 900 MHz instantaneous bandwidth, 101 dB·Hz2/3 SFDR and 130 dB·Hz LDR, image rejections of ~80 dB for 1st frequency conversion and >90 dB for 2nd frequency conversion. ---------------------------------------------- The proposed approach has two distinguishing features. 1) The optical LO is generated based on a wide-band tuning laser with two major steps, the coarse locking and tuning of the LO frequency by a digital locking unit, and the real-time compensation of the residue frequency-error and the phase-noise by the 2nd frequency conversion unit and the reference extraction unit. The proposed optical LO serve has the advantages of ultra-wide tuning range (>45 GHz), excellent harmonic spurious suppression, and its implementation is relatively simple and reliability. 2) The photonic frequency conversion is based on the superheterodyne configuration. This photonic-based superheterodyne configuration has two stages of frequency conversion. In the first stage, RF signals is converted to a fixed high-intermediate frequency. In the second stage, the high-IF signal is down-converted to a low-IF. Combining with the RF processing in the front-end before EOM and the IF processing after the photoelectric detection, the proposed photonic frequency conversion shows several advantages of ultra-wide frequency conversion range (≥45 GHz), larger instantaneous bandwidth (>900 MHz), higher interference/spurious suppression capability. Acknowledgment This work was partially supported by Independent Innovation Fund of Qian Xuesen Laboratory of Space Technology, and Independent research and development projects of China Aerospace Science and Technology Corporation. ---- China EW capability при высоте 10 километров - 425 километров Figure 14. Orientation and Altitude-Dependent Coverage of Fiery Cross and Mischief Reef Electronic Intelligence Arrays https://www.jhuapl.edu/sites/default/files/2022-12/EWandSIGINT.pdf 4. высококачественный приемник радиоразведки с аналого -цифровыми преобразователями 6 GSPS AD9213-6G 0.028 micron в каждом канале имеет полосу сигналa 1 гигагерц State of the Art Tuner Chipsets for Electronic Warfare Applications ----------------------------------------------------------------------------------------------------- https://markimicrowave.com/technical-resources/tech-notes/state-of-the-art-tuner-chipsets-for-electronic-warfare-applications/ для постоянного перекрытия диапазона 2-18 гигагерц требуется 16 каналов,в каждом канале супергетеродин с двойным преобразованием частоты и первой промежуточной выше частоты сигнала Все возможные виды модуляции ,формы сигнала известны,однако неизвестно какую форму сигнала ,модуляция и в каком диапазоне применит противник в конкретном случае в конкретный момент времени. знание формы сигнала позволяет получить выигрыш пo мощности 20+ db использовать для радиоподавления GaN усилитель с средней мощности 1000 Ватт вместo 100 киловатт пeлeнг источника излучения позволяет ---------------------------------------------------------------- https://www.semanticscholar.org/paper/Multiple-Array-Spacings-for-an-Interferometer-With-Lee-Kim/e05278827ccae29a93090d079bc8697467920b0f Multiple Array Spacings for an Interferometer Direction Finder With High Direction-Finding Accuracy in a Wide Range of Frequencies Jung-Hoon Lee, Jong-Kyu Kim, Young-Ju Park Published in IEEE Antennas and Wireless… 7 February 2018 novel method for achieving high direction-finding (DF) accuracy that is below 0.1° root mean square error (RMSE) in phase interferometer systems is proposed. To do this, unambiguous array spacing with maximum phase-difference error is first obtained, and then the set of array spacing with both the longest baseline and the maximum phase-different error is selected. An example to achieve an accuracy below 0.1° RMSE in the frequency range of 6–18 GHz with a field of view of 120° is provided to validate the proposed method. Simulation results show that 0.026° RMSE DF accuracy is achieved a.использовать для радиоподавления остронаправленные антенны , антенна диаметром 50 сантиметров в диапазоне 10 гигагерц имеет коэффициент усиления 32 dbi выигрыш более 1000 пo мощности b. атаковать управляемым снарядом и ракетой ##################### стоимость важнейших компонентов для двухканального приемника 6000+900+4680+6000 =approx 17500 usd +фильтры +ниокр + сборка + настройка = approx 100 000 120 000 usd приемлемо ,compare стоимость снаряда 152 mm Exalibur 110 000 euro соответствующей технологии и схемотехники ADC/FPGA 0.028 micron нет есть в Китайской народной республике,на схемотехнику ADC лучше скопировать, это инженерно тоже не простая задача ############################################ цены в России ниже чем в Америке ,нo соответствующей технологии и схемотехники ADC нет Танк Армата с 152 мм пушкой= 300 миллионов рублей, compare Leopard 2A7 13 mln euro Коалиция СВ ? миллионов рублей compare Pzh 2000 17 mln euro Краснополь -3 миллионa рублей compare Exalibur 110 000 euro Активные боевые действия наступление 1000 Армата = 300 млрд рублей 25 боекомплектов на 50 дней 25x40x1000 1 миллион снарядов Краснополь = 3 триллионa рублей ------ смесители цена с военной приемкой MM1-1850SS+MM1-0626S 0.15 micron GaAs 2x2 (900+600) =6000 usd +4 LO Amplifier Selection we need to discuss the importance and strategy to generate a proper LO drive signal. 4x $226.61 =900 usd ADC AD9213-6G 0.028 micron с военной приемкой цену умножить на 2 2x2x1170 =4680 usd FPGA Xilinx Virtex 6 0.028 micron 1 на два канала с военной приемкой цену умножить на 2 3000x2=6000 usd https://www.intel.com/content/dam/www/central-libraries/us/en/documents/2022-06/digital-receivers-revolutionize-rf-spectrum-monitoring-architectures-white-paper.pdf State of the Art Tuner Chipsets for Electronic Warfare Applications ----------------------------------------------------------------------------------------------------- после стоят АДС, FPGA как сказано выше ----------------------------------------------------------------------------------------------------------- https://markimicrowave.com/technical-resources/tech-notes/state-of-the-art-tuner-chipsets-for-electronic-warfare-applications/ By Marki Microwave, Posted Wed May 29 2019 Modern battlefields are awash in electronic signals from radars, jammers, and radio communications. Therefore, high linearity EW receivers for applications such as Radar Warning Receivers, Jammers, and Electronic Countermeasures are one of the most important capabilities for the modern warfighter. In this tech note we will focus on the double conversion architecture this architecture dramatically reduces the in-band spurs. ####################################### from option 3, as shown below: RF 2-17 GHz LO swept 23.5-40.5 GHz First IF 21.5 -22.5 GHz ,Fixed 2LO 23.5 GHz Second IF 1-2 GHz Component Requirements 2 Mixer Working from right to left, the second mixer in the architecture has an easy enough job, but it should still have sufficient dynamic range to prevent distortions in the downconversion. Marki recommends the MM1-0626S for this slot. https://octopart.com/mm1-0626ss-marki+microwave-136172355 10 $ 600.68 за один https://shop.markimicrowave.com/products/detail/mm10626hs-marki-microwave/690935/ Quantity Price 1 - 9 $ 614.70 10 - 24 $ 555.77 ------ 1 Mixer 0.15 micron GaAS The MM1-1850SS is a high linearity passive double balanced MMIC mixer. The S diode offers superior 1 dB compression, two tone intermodulation performance, and spurious suppression to other GaAs MMIC mixers. https://markimicrowave.com/products/connectorized/mixers/mm1-1850ss/ https://shop.markimicrowave.com/products/detail/mm11850ss-marki-microwave/686056/ Quantity Price 1 - 9 $931.50 10 - 24 $842.08 https://markimicrowave.com/technical-resources/tech-notes/state-of-the-art-tuner-chipsets-for-electronic-warfare-applications/ LO Amplifier Selection we need to discuss the importance and strategy to generate a proper LO drive signal. 1 - 9 $226.61 необходимо два https://markimicrowave.com/products/connectorized/amplifiers/amm-6702uc/ https://shop.markimicrowave.com/products/detail/amm6702ch-marki-microwave/685320/ ------------------- IP3 Analysis The dynamic range of a system is limited by noise (for low power signals) and distortion (for high power signals). The first component of distortion to be considered is the main signal compression as expressed by the P1dB. For an ultra-broadband system like the wideband tuner, however, the input signal is typically limited to a power level much lower than the P1dB. Spurious products (single and multitone) cause distortions that limit system performance much lower than the main signal compression. The first of these we’ll consider is multitone intermodulation distortion, as expressed by the IP3. Here is a comparison of the IP3 of the different mixer options under our standard frequency plan, but limited to the 2-18 GHz band (due to the band rolloff of the T3). ------------------------------ ADC https://www.analog.com/media/en/technical-documentation/data-sheets/ad9213.pdf AD9213-6G 0.028 micron $1,171.12

milstar: https://www.analog.com/media/en/analog-dialogue/volume-55/number-1/sfdr-considerations-in-multi-octave-wideband-digital-receivers.pdf https://www.analog.com/media/en/analog-dialogue/volume-55/number-1/sfdr-considerations-in-multi-octave-wideband-digital-receivers.pdf

milstar: The 2-24GHz RF Front End is a complete RF receiver and transmitter front end designed to meet the specifications of typical wideband instrumentation and electronic warfare (EW) systems. The latest generation of high performance RF/microwave and mixed signal components available from ADI are used to reduce system SWaP (size, weight, and power) and architectural complexity. The full system block diagram is shown below, consisting of four functional blocks- the receiver front end, transmitter front end, digitizer, and LO generation. This version (18 Aug 2023 14:52) was approved https://wiki.analog.com/resources/eval/developer-kits/2to24ghz-mxfe-rf-front-end/rx-overview https://ez.analog.com/cfs-file/__key/docpreview-s/00-00-01-41-71/Accelerate-Your-Design-With-A-2-to-24-GHz-Wideband-Transceiver-Reference-Design.pdf

milstar: Historically, increasing the instantaneous bandwidth while maintaining the required linearity required using either multiple overlapping receivers or an interleaved architecture. The overlapped receivers each digitize a portion of the required bandwidth with digital signal processing used to recombine the data and observable spectrum from each channel. For interleaved architecture, it is often used with calibration required to minimize the phases, offset, and gain differences between the converters. Both options are generally expensive to implement but the digital signal processing is often customized to the implementation https://www.analog.com/media/en/technical-documentation/tech-articles/Taming-the-Wideband-Conundrum-with-RF-Sampling-ADCs.pdf

milstar: IIP3 = 10 log ( square Vpp /8 x Rin x0.001 watt) - ( imd -3 x inimd tone )/2 10 log 10 ( square 1.4/ 8x50 x .0001)=6.9 dbm 6.9 dbm - ( -80 -3x -7)/2=6.9+59/2=36.4 dbm AD9213 1.4 V pp 50 ohm imd -80 dbFS inputimd -7 dbFS AD9467 36.7dbm 170 mhz 250 msps AD9213 -6G 36.4 dbm 1842 mhz 6 gsps AD9208 2x3G 14 bit 27.06 dbm AD9207 2x6GSPS 12 bit 36.84 db 2675/2725 mhz AD9213S 10 GSPS 12 bit 1.4 v 50 ohm 34.9 db 1842/1837 34.4 2138/2143 70 gradC

milstar: https://gdmissionsystems.com/-/media/general-dynamics/ground-systems/pdf/prophet-enhanced-signals-processing-esp-datasheet.ashx

milstar: https://www.plath-signalproducts.com/newsroom

milstar: to: https://guraran.ru/prezidiym_raran.html to: copy for information to : re: Капитан 3-го ранга Максим Климов О ситуации на фронте |- видео c 5.50 ...основное средство обнаружения беспилотников глаза и уши высокая интенсивность применения украинских беспилотников,отсутствие российских средства радиоразведки и радиоподавления тактического уровня https://www.youtube.com/watch?v=0ZENoU4FKLY видео c 5.50 ...основное средство обнаружения беспилотников глаза и уши Радиоразведка - измерительный радиоприемник это примерно приемник радиоразведки российский разработчик https://inwave.ru/products/radiomonitoring/ диапазон рабочих частот комплексов от 8 кГц до 13.5 ГГц покрывает практически все известные стандарты и диапазоны работы средств связи Высокая скорость сканирования (до 20 ГГц/с) и ширина полосы анализа приемных устройств (260 МГц) Средства радиоразведки ВСУ (Часть 3) Минерва - широкополосный радиомониторинговый приемник. https://dzen.ru/a/YW71Ws0CtGbuYtGm радиомониторинг, поиск, обнаружения и классификация источников радиоизлучения в диапазоне частот 25-40000 МГц с максимальной мгновенной полосой обзора 800 МГц. это конечно зарубежные аналого-цифровые преобразователи + ПЛИС Xilinx,Altera ( БПЛА Орлан 10 стоимость 10-15 миллионов рублей ПЛИС Xilinx Vertex 6 0.04 micron ) важнейшeе - динамические характеристики приемника - сигнал/шум,динамический диапазон без AРУ,SFDR,IIP3 IMD это смесители и АЦП c IIP3 35 db ширина полосы анализа приемных устройств (260 МГц) - АЦП 2.5 GSPS с высоким динамическим диапазоном при широкополосном сигнале AD9625 -2.5 GSPS 0.065 micron стоимость 1100 долларов в партиях пo 1000 штук , с военной приемкой примерно в 2 раза дороже такая технология в России есть на микроне ,отсутствие проекта ,отсталость в схемотехнике https://www.analog.com/media/en/technical-documentation/data-sheets/AD9625.pdf Миландру потребовалось 10 лет для разработки АЦП класса 200 msps , который все равно изготавливается в Малайзии и хуже чем AD9467 выпуска 2010 года с проектными нормами 0.18 micron,которые давно есть в России отсталость российских схемотехникoв и некомпетентность военно-бюрократического аппарата Министерства обороны --------------------------------------------------------------------------------- 0.09 микрон есть в России с 2010 года,2010 АЦП AD9467 0.18 микрон 250 msps SFDR 100 dbfs at 170 mhz пуcть полная копия .... за 14 лет так и не появился -------------------- https://habr.com/ru/companies/milandr/articles/530662/ analog_design 1 дек 2020 в 09:18 Скоростной АЦП с нуля. 16 бит за 10 лет Analog Device .18 micron AD9467-EP https://www.analog.com/media/en/technical-documentation/data-sheets/AD9467-EP.pdf в России технология давно есть AD9467 250 msps на рынке с 2010 года за 120 долларов ,военная версия в 2 раза дороже рекордные показатели пo динамическом диапазону , для системы связи приемник с двойным или тройным преобразованием частоты в диапазонах 0-8 Гигагерц очень хорош, для системы радиоразведки если полоса сигнала не больше 50-60 мегагерц тоже индивидуальная тактическая радиостанция весом 1.2-1.5 кг с разъемами для подключения внешних остронаправленных антенн, усилителя радиоподавления 0-8 Гигагерц один канал связь со своим БПЛА ,второй для сканирования излучение БПЛА противника сканер с размерами 165mm x 103mm x 25mm ADC класса 100-200 msps The scan time from 100 kHz to 6 GHz in 20 MHz steps was well under 1second. https://www.armms.org/media/uploads/1304696513.pdf The original design brief was to achieve a receiver capable of scanning a band from 100 kHz to 6 GHz in less than 1 second. The additional requirements were: an instantaneous bandwidth of up to 20 MHz; a final IF suitable for feeding a digital receiver with around 100 Msps sample rate; a minimum signal sensitivity of -107 dBm and; a dynamic range of at least 80 dB. СБИС 16-разрядного АЦП конвейерного типа с частотой дискретизации 200 МГц изготовлена по КМОП 90-нм https://i-progress.tech/products/bis-i-sbis/spetsialnye-sbis/sbis-16-razryadnogo-atsp/ идеи все давно реализованы ,идти с авиацией ... тоже самое на автомашине Тигр https://www.ausairpower.net/APA-Flanker-Radars.html ############## https://markimicrowave.com/technical-resources/tech-notes/state-of-the-art-tuner-chipsets-for-electronic-warfare-applications/ By Marki Microwave, Posted Wed May 29 2019 Modern battlefields are awash in electronic signals from radars, jammers, and radio communications. Therefore, high linearity EW receivers for applications such as Radar Warning Receivers, Jammers, and Electronic Countermeasures are one of the most important capabilities for the modern warfighter. 28 nm Analog-to-Digital Converters Enable Next-Generation Electronic Warfare Receiver Systems https://www.analog.com/en/resources/technical-articles/28-nm-adcs-enable-next-gen-electronic-warfare-rec-sys.html стоимость важнейших компонентов для двухканального приемника 6000+900+4680+6000 =approx 17500 usd +фильтры +ниокр + сборка + настройка = approx 100 000 120 000 usd приемлемо ,compare стоимость снаряда 152 mm Exalibur 110 000 euro соответствующей технологии и схемотехники ADC/FPGA 0.028 micron нет есть в Китайской народной республике,на схемотехнику ADC лучше скопировать, это инженерно тоже не простая задача ############################################ цены в России ниже чем в Америке ,нo соответствующей технологии и схемотехники ADC нет Танк Армата с 152 мм пушкой= 300 миллионов рублей, compare Leopard 2A7 13 mln euro Коалиция СВ ? миллионов рублей compare Pzh 2000 17 mln euro Краснополь -3 миллионa рублей compare Exalibur 110 000 euro Активные боевые действия наступление 1000 Армата = 300 млрд рублей 25 боекомплектов на 50 дней 25x40x1000 1 миллион снарядов Краснополь = 3 триллионa рублей ------ смесители цена с военной приемкой MM1-1850SS+MM1-0626S 0.15 micron GaAs 2x2 (900+600) =6000 usd +4 LO Amplifier Selection we need to discuss the importance and strategy to generate a proper LO drive signal. 4x $226.61 =900 usd ADC AD9213-6G 0.028 micron с военной приемкой цену умножить на 2 2x2x1170 =4680 usd FPGA Xilinx Virtex 6 0.028 micron 1 на два канала с военной приемкой цену умножить на 2 3000x2=6000 usd https://www.intel.com/content/dam/www/central-libraries/us/en/documents/2022-06/digital-receivers-revolutionize-rf-spectrum-monitoring-architectures-white-paper.pdf State of the Art Tuner Chipsets for Electronic Warfare Applications ----------------------------------------------------------------------------------------------------- после стоят АДС, FPGA как сказано выше ----------------------------------------------------------------------------------------------------------- https://markimicrowave.com/technical-resources/tech-notes/state-of-the-art-tuner-chipsets-for-electronic-warfare-applications/ By Marki Microwave, Posted Wed May 29 2019 Modern battlefields are awash in electronic signals from radars, jammers, and radio communications. Therefore, high linearity EW receivers for applications such as Radar Warning Receivers, Jammers, and Electronic Countermeasures are one of the most important capabilities for the modern warfighter. In this tech note we will focus on the double conversion architecture this architecture dramatically reduces the in-band spurs. ####################################### from option 3, as shown below: RF 2-17 GHz LO swept 23.5-40.5 GHz First IF 21.5 -22.5 GHz ,Fixed 2LO 23.5 GHz Second IF 1-2 GHz Component Requirements 2 Mixer Working from right to left, the second mixer in the architecture has an easy enough job, but it should still have sufficient dynamic range to prevent distortions in the downconversion. Marki recommends the MM1-0626S for this slot. https://octopart.com/mm1-0626ss-marki+microwave-136172355 10 $ 600.68 за один https://shop.markimicrowave.com/products/detail/mm10626hs-marki-microwave/690935/ Quantity Price 1 - 9 $ 614.70 10 - 24 $ 555.77 ------ 1 Mixer 0.15 micron GaAS The MM1-1850SS is a high linearity passive double balanced MMIC mixer. The S diode offers superior 1 dB compression, two tone intermodulation performance, and spurious suppression to other GaAs MMIC mixers. https://markimicrowave.com/products/connectorized/mixers/mm1-1850ss/ https://shop.markimicrowave.com/products/detail/mm11850ss-marki-microwave/686056/ Quantity Price 1 - 9 $931.50 10 - 24 $842.08 https://markimicrowave.com/technical-resources/tech-notes/state-of-the-art-tuner-chipsets-for-electronic-warfare-applications/ LO Amplifier Selection we need to discuss the importance and strategy to generate a proper LO drive signal. 1 - 9 $226.61 необходимо два https://markimicrowave.com/products/connectorized/amplifiers/amm-6702uc/ https://shop.markimicrowave.com/products/detail/amm6702ch-marki-microwave/685320/ ------------------- IP3 Analysis The dynamic range of a system is limited by noise (for low power signals) and distortion (for high power signals). The first component of distortion to be considered is the main signal compression as expressed by the P1dB. For an ultra-broadband system like the wideband tuner, however, the input signal is typically limited to a power level much lower than the P1dB. Spurious products (single and multitone) cause distortions that limit system performance much lower than the main signal compression. The first of these we’ll consider is multitone intermodulation distortion, as expressed by the IP3. Here is a comparison of the IP3 of the different mixer options under our standard frequency plan, but limited to the 2-18 GHz band (due to the band rolloff of the T3). ------------------------------ ADC https://www.analog.com/media/en/technical-documentation/data-sheets/ad9213.pdf AD9213-6G 0.028 micron $1,171.12 ------------ 61-й Гв. бригады морской пехоты связь необходима как воздух, так как стандартная зеленая (станция "Азарт") попала в руки к врагу еще в 2017 году, и в средствах РЭР ВСУ с 2018 года закладывался опционал для её вскрытия и выявления - в частности переносной РЭР "Пластун". Врагу даже не было необходимости в расшифровке переговоров через "Азарт" - радиостанции просто высекали по частоте и накрывали артиллерией. https://voenhronika.ru/publ/vojna_na_ukraine/odinnadcatyj_otchet_peredacha_sredstv_svjazi_i_dopolnenij_k_nej_v_shtorm_61_j_gv_brigady_zakuplennye_na_sredstva_sobrannye_chitateljami_sajta_4_video/60-1-0-15050 -------------- AN/PRC-162 Radio from Collins Aerospace https://www.collinsaerospace.com/what-we-do/industries/military-and-defense/communications/ground-communications/ground-vhf-uhf-l-band-communications/trunet-an-prc-162-v1-networked-communications-ground-radio https://prd-sc102-cdn.rtx.com/-/media/ca/product-assets/marketing/p/prc-162-ground-networking-radio-data-sheet.pdf?rev=a396cb88722b49de91d7b2dcb3ea8eda&hash=3673D07B0842D8A568F70D4768BF2F1D Wideband - UHF: 225-450 MHz - L-BAND: 1250 - 1450 MHz, 1755-1850 M Dimensions 8.5” W x 3.4” H x 7.8” D (without battery) 21.6 cm W x 8.6 cm H x 19.81 cm D (without battery) 8.5” W x 3.4” H x 13” D (with battery) 21.6 cm W x 8.6 cm H x 33.02 cm D (with battery) Weight 9.5 lbs (without battery) 13.3 lbs (with battery) 4.3 kg (without battery) 6.03 kg (with battery) A few military radios use single sideband (SSB), which can be considered a form of AM. Most of the radios used in the military, however, are FM. These provide flexible, quick, but still reliable communication. The SINCGARS radios mentioned above are a part of the FM radios family. https://prd-sc102-cdn.rtx.com/-/media/ca/product-assets/marketing/v/vrc-126-127-mounted-ground-vehicle-data-sheet.pdf?rev=460b48464b9e4edc998a6315acd45122&hash=B7531027747336262C4EB27D70C9F3EB https://www.l3harris.com/sites/default/files/2023-05/cs-tcom-an-prc-163-multi-channel-handheld-radio-datasheet-r.pdf Ultra ORION X500-S X500-S is the ideal solution for amphibious operations, maintaining secure high capacity connectivity between floating operations centers, landing crafts and land- based command posts. It offers long range communications of over 30 nautical miles in ship-to-shore applications Frequency Band 3 (L-Band, 1350-1850 MHz), Band 3+ (L/S-Band, 1350-2690 MHz), Band 4 (C-Band, 4400-5000 MHz), 2.4 GHz ISM, 5.2/5.8 GHz NII/ISM, LTE (700 MHz) Throughput Up to 500 Mbps for system Number of Channels 3 (2 SDR + 1 secure access channel) Radio Access Method TDD/FDD Modulation & Coding BPSK up to 128QAM with Automatic Modulation & Coding (AMC) Size (HxWxD) 4 x 11.8 x 12'' (102 x 304 x 300 mm) Weight Up to 21 lbs (9.5 kg) https://datasheet.datasheetarchive.com/originals/crawler/ultra-tcs.com/3206aaf6f214faf50d8f5bc59f2e2a71.pdf https://fei-elcomtech.com/wp-content/uploads/2019/11/Product-Release-SIR-4000.pdf Ultra – Performance, Receiver up to 40 GHz SIR-4100 ELINT/MASINT Receiver: • Input Frequency 0.1 to 40 GHz • <100 usec in-band switching • 1.8 GHz IF Output with 1GHz BW • 160MHz & 70MHz IF with up to 80MHz BW • Graphical User Interface software ----------------------------- https://ieeexplore.ieee.org/document/10276399 In this paper, a class-C power amplifier (PA) which is broadband and high-gain with an automatic power control loop and a load compensation circuit is proposed. The fundamental power amplifier unit is designed using the GaN HEMT, and the matching circuit is implemented using lumped parameter capacitance and distributed parameter inductance, which can get a further reduction of insertion loss and improvement of the VSWR of the input return loss. According to experimental findings, an output power of 200 W, a gain of more than 47 dB, and a saturated power additive efficiency (PAE) of 20% can be obtained in the 1-6 GHz frequency band. -------------- prototype direction finding 1 GSPS ADC TI ADS5400 https://www.ti.com/lit/ds/symlink/ads5400.pdf?ts=1713025592005&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FADS5400 https://www.ti.com/product/ADS5400 Virtex 6 Xilinx FPGA https://www.xilinx.com/publications/prod_mktg/Virtex6_Product_Brief.pdf page 59 https://digital.wpi.edu/pdfviewer/6395w8650 https://digital.wpi.edu/concern/student_works/g158bj99v?locale=en --------------------------- 1.2 Jamming Strategies Jamming is the ability to interfere, distort, or prevent the signal transmission be- fore it received by its desired receiver. There are different ways to place the jamming signal within the spread spectrum bandwidth. In this section, the most effective and commonly used strategies of jamming will be presented. 1.2.1 Barrage Noise Jammer The jammer transmits bandlimited white Gaussian noise. It is usually assumed that the jammer power spectrum covers exactly the same frequency range as the spread spectrum signal. The effect of the barrage noise jammer on the spectrum is to increase the Gaussian noise level at the output of the receiver down converter. If the power of the jammer signal is PJ watts, and signal has a bandwidth of W Hz, the single-sided power spectral density (PSD) of the jammer is NJ = PJ /W . 1.2.2 Partial Band Jammer To jam a spread spectrum signal, it is typically more effective to transmit all the available jamming power in a limited bandwidth. This is called a partial band jammer. If the fraction of the spread spectrum signal bandwidth which is jammed is denoted by q, the PSD of the partial band jammer is NJ = PJ /qW , where PJ is the total jamming power and, qW is the limited bandwidth of the signal which is jammed. The partial band jammer is particularly effective against frequency hopping spread spectrum systems because the signal will hop in and out of the jamming band and can be seriously degraded in the jamming band [32], [33]. 1.2.3 Single Tone Jammer The single tone jammer transmits an unmodulated carrier with power PJ some- where in the spread spectrum signal bandwidth. The single tone jammer is easily to generate and is rather effective against direct sequence spread spectrum systems. To achieve the maximum effectiveness of this jammer, the jamming tone should be placed at the center of the spread spectrum signal bandwidth. The single tone jammer is less effective against frequency hopping, since the frequency hopping instantaneous bandwidth is small and, for large processing gains the probability of any hop being jammed is small [33]. 1.2.4 Multiple Tone Jammer A better tone jamming strategy against frequency hopping systems is to use several tones instead of a single tone. However, the power of the single tone jammer will be shared by these multiple jamming tones. The jammer selects a number of tones so that the optimum degradation occurs when the spread spectrum signal hops to a jamming tone frequency. The optimum number of tones is a function of the received ratio of signal power to jammer power (PS /PJ ). Multiple tone jamming is also effective against hybrid systems [33]. 1.2.5 ON-OFF Jammer The ON-OFF jammer (pulsed noise jammer) transmits a pulsed band limited Gaussian noise signal whose power spectral density just covers the spread spectrum system bandwidth W . The duty factor (the fraction of time during which the jammer turns on) for the jammer is denoted by ρ. The received jammer power spectral density is PJ /ρW . This pulsed technique can also be used for single tone, multiple tone and partial band jammers. 1.2.6 Repeater Jammer A repeater jammer receives the spread spectrum signal, distorts it in some well defined manner, and retransmits the signal at high power. The spread spectrum receiver then receives the distorted signal at high power and it will track and de- modulate this distorted signal. However, there are two main issues that should be considered for this jammer. Firstly, the repeater jammer must distort the spread spec- trum signal or else the jammer will act as a power amplifier for the desired signal. Secondly, receiving and transmitting simultaneously in the same band of frequencies presents formidable practical problems for the jammer. 1.2.7 Smart Jammer For the jammer to be most effective, the jamming signal must be adapted to the spread spectrum system and to the actual received signal power. A jammer which has knowledge of the type of signaling being used, which can accurately predict the received signal power, and which can adapt to transmit the optimum jamming signal is called a smart jammer. A smart jammer is usually assumed in all worst case designs

milstar: to: https://guraran.ru/prezidiym_raran.html copy for information to : re: Константин Сивков Танки Сегодня Видео 1.15 -обеспечивает отражение ударов дронов беспилотников / Танки будущего ВОЕННАЯ МЫСЛЬ 9 20232- /... идти за авиацией СУ-57 / СУ-35C ...все тоже но на дальность не 350 а 20 километров видео Ликбезы (в Донецке )по работе со спектральным анализатором и частотам передачи сигналов современных дронов приемник радиоразведки+ 100 mm Оптика c пзс+ угол возвышения пушки 30 градусов+Снаряд "Тельник" траекторный разрыв ,БПЛА противник уничтожен Ликбезы по работе со спектральным анализатором и частотам передачи сигналов современных дронов https://ok.ru/video/6977254066816 https://ok.ru/video/6977253739136 Константин Сивков | Танки Сегодня "Больше не в моде"? | Разбираемся Видео 1.15 https://www.youtube.com/watch?v=y_Bivz0gEaQ Дилетанты и тупицы»: эксперт жестко ответил сторонникам отмены танков и систем ПВО https://voennoedelo.com/posts/id59656-diletanty-i-tupitsy-ekspert-zhestko-otvetil-storonnikam-otmeny-tankov-i-sistem-pvo Танки будущего ВОЕННАЯ МЫСЛЬ 9 2023 https://vm.ric.mil.ru/Stati/item/512567/ ----------------------- Разведка есть девять десятых победы Наполеон Без современной системы связи ,рaдиo и оптической разведки, высокоточныx средства поражения, в том числе на тактическом уровне 1 танк или 1 БМП Российская армия не может считаться современной ################################################### 1. приемник радиоразведки до 18 гигагерц ,4 независимых канала один сканирование ,один управление собственным бпла ,один связь + резервный Российский пример на базе inwave mwr-135UW /UPR-2 https://inwave.ru/products/kontrolnoizmeritelnoe-oborudovanie/izmeritelnie-priemniki/ 2. фазовый интерферометр с точностью азимут 1 градус Труды МАИ. 2022. № 123 СИНТЕЗ МАЛОГАБАРИТНОГО ФАЗОВОГО ПЕЛЕНГАТОРА АВИАЦИОННОГО БАЗИРОВАНИЯ https://mai.ru/upload/iblock/71a/vr3gb24k025qhyhonjf69h07l3meixxe/Azarov_Karavaev_Rozhkov_Slavyanskiy_Smolka.pdf search in duckduckgo Lincoln laboratory Air Force contract #FA8721-10-C-0007 WPI MQP Group Phase Interferometry Direction Finding - digital.wpi.edu 3.оптика с апертурой 100 миллиметров и ПЗС матрицей на поворотной платформе пример видео c 1:00 птица на удалении 1600 метров апертура 25х100 мм https://www.youtube.com/watch?v=-ijEnOZ-iDg 4. комплекс антенн радиоподавления и усилители GaN к ним https://niiet.ru/product-category/tranzmod/gan/continuous-mode-power-microwave-gan/6p/ 5.. Снаряды 3ВОФ128 "Тельник" https://armata.d3.ru/snariady-3vof128-telnik-2396040/?sorting=rating угол возвышения пушки 30 градусов, "Тельник" - траекторный разрыв ,БПЛА уничтожен



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