CN206400092U - Multifunctional comprehensive signal simulator - Google Patents
Multifunctional comprehensive signal simulator Download PDFInfo
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- CN206400092U CN206400092U CN201621417755.2U CN201621417755U CN206400092U CN 206400092 U CN206400092 U CN 206400092U CN 201621417755 U CN201621417755 U CN 201621417755U CN 206400092 U CN206400092 U CN 206400092U
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Abstract
The utility model proposes a kind of multifunctional comprehensive signal simulator, including the feature card and processor in CPCI cabinets, CPCI cabinets upper-part, CPCI cabinets, the CPCI cabinets upper-part includes setting interface, indicator lamp and switch, and the feature card includes cpci bus, receives down-converter unit, wideband digital frequency memory device, amplitude control synthesis unit, transmitting upconverting unit, Comprehensive Control and synchronizer, the comprehensive and CPCI power supplys of frequency；The transmitting upconverting unit includes 18 26GHz up-converter systems and 26 40GHz up-converter systems；The processor includes echo apart from delay process device, range attenuation analog processor and Doppler frequency shift processor.The processing of three processor process signals of an embodiment of the present utility model is calculated, than an independent processor calculating speed faster, the data volume of processing is bigger, can handle more signals, can avoid because computational problem cause delay fault the problems such as.
Description
Technical field
The utility model is related to a kind of radar testing device, and in particular to a kind of multifunctional comprehensive signal simulator.
Background technology
The increasingly complexity of radar electromagnetism threatening environment, higher requirement, computer and high speed are proposed to signal simulator
The high speed development of microwave device, also promotes the development of analogue technique.In design aspect, the positive court of multifunctional comprehensive signal simulator
Seriation, standardization, modular direction to develop, and use open architecture；It is multi-functional comprehensive in terms of analog functuion
Close signal simulator towards comprehensive integrated direction to develop, multiple systemic-functions are integrated into a system.
As the requirement to the precision of radar, speed and target number is continuously increased, the requirement to simulator not only increases.
Target echo signal and the typical case needed for the system debugs such as guidance radar, search radar and instrumentation radar can be simulated by also lacking at present
The wideband multifunction integrated signal simulator of interference environment, come coordinate radar complete radar system function debugging task, and
Radar is responsible for undertaking the training mission of operator after delivering.
Utility model content
In view of the above-mentioned problems, the utility model proposes a kind of multifunctional comprehensive signal simulator, it is specific as follows：
A kind of multifunctional comprehensive signal simulator, it is characterised in that the simulator is including on CPCI cabinets, CPCI cabinets
Part, feature card and processor in CPCI cabinets, the CPCI cabinets upper-part include interface, indicator lamp and switch, institute
Feature card is stated including in cpci bus, reception down-converter unit, wideband digital frequency memory device, amplitude control synthesis unit, transmitting
Converter unit, Comprehensive Control and synchronizer, the comprehensive and CPCI power supplys of frequency；The transmitting upconverting unit includes 18-26GHz up-conversions
System and 26-40GHz up-converter systems；The processor includes echo apart from delay process device, range attenuation analog processor
With Doppler frequency shift processor.
Optionally, receive and limiter is provided with before down-converter unit.
Optionally, the interface includes reception antenna interface, transmitting antenna interface, display interface device, keyboard interface and mouse
Tag splice mouthful.
Optionally, the interface also includes the transmitting of a debugging serial interface and backup with receiving radiofrequency signal interface.
Optionally, the front panel upper front of the simulator is provided with power switch and status indicator lamp, and the state refers to
It is power supply indicator, normal work indicator lamp and malfunction indicator lamp to show lamp；The rear board of the simulator provided with two fans, into
Seven Y11 sockets of one row and four N/SMA sockets of into another row and two Y11 sockets.
Optionally, the simulator also includes rack, and the rack is provided with rack power supply and interface of the ground wire.
A kind of embodiment Simulator design of the present utility model follows setting for " practical, reliable, advanced, light, economy "
Count principle.Implement following design philosophy comprehensively in system design：A) 6U standard cpci bus structures are used, are easy to system collection
Into reduction combined volume；B) data exchange of simulator and master control system is realized using network transmission mode；C) hardware design is stayed
There is sufficient test interface, be easy to system debug and maintenance；D) electromagnetic Compatibility Design is through system architecture, electric scheme
With the overall process of Technology design, to ensure that system reliably works.
Brief description of the drawings
Fig. 1 is dimensional structure diagram before the multifunctional comprehensive signal simulator of embodiment 1；
Fig. 2 is dimensional structure diagram behind the multifunctional comprehensive signal simulator of embodiment 1；
Fig. 3 is the multifunctional comprehensive signal simulator composition frame chart of embodiment 1；
Fig. 4 is the multifunctional comprehensive signal simulator interface connection diagram of embodiment 1；
Fig. 5 is the multifunctional comprehensive signal simulator fundamental diagram of embodiment 1；
Fig. 6 is the multifunctional comprehensive signal simulator partial function plug-in unit aerial lug figure of embodiment 1；
Fig. 7 is the multifunctional comprehensive signal simulator of embodiment 1 from the 3 d effect graph above seen；
Fig. 8 is the multifunctional comprehensive signal simulator of embodiment 1 from the 3 d effect graph seen below；
Fig. 9 is the FB(flow block) of the multifunctional comprehensive signal simulator main control module of embodiment 1；
Figure 10 is the FB(flow block) of the multifunctional comprehensive signal simulator echo-signal generation module of embodiment 1；
In figure, 1CPCI buses, 2 receive down-converter unit, 3 wideband digital frequency memory devices, 4 amplitudes control synthesis unit, 5 hairs
Penetrate upconverting unit, 6 comprehensive, the 7 CPCI power supplys of frequency, 8 Comprehensive Controls and synchronizer, 9 processors, 11 power switches, 12 power supply instructions
Lamp, 13 normal work indicator lamps, 14 malfunction indicator lamp, 21 fans, 22Y11 sockets, 23N/SMA sockets.
Embodiment
To describe technology contents, construction feature, institute's reached purpose and effect of the utility model in detail, reality is hereby enumerated below
Apply example and coordinate accompanying drawing to be explained in detail.
Embodiment 1
As shown in Fig. 1-2 and Fig. 6-7, a kind of multifunctional comprehensive signal simulator, a kind of multifunctional comprehensive signal simulator,
The simulator includes CPCI cabinets, CPCI cabinets upper-part, the feature card in CPCI cabinets and processor 9, the CPCI
Cabinet upper-part includes interface, indicator lamp and switch, and the feature card includes cpci bus 1, receives down-converter unit 2, width
The digital frequency memory device 3 of band, amplitude control synthesis unit 4, transmitting upconverting unit 5, Comprehensive Control and synchronizer 8, comprehensive 6 and CPCI of frequency
Power supply 7；The transmitting upconverting unit 5 includes 18-26GHz up-converter systems and 26-40GHz up-converter systems；The processing
Device 9 includes echo apart from delay process device, range attenuation analog processor and Doppler frequency shift processor.The interface includes connecing
Receive antennal interface, transmitting antenna interface, display interface device, keyboard interface and mouse interface.The front panel front of the simulator
Top is provided with power switch 11 and status indicator lamp, and the status indicator lamp is power supply indicator 12, normal work indicator lamp 13
With malfunction indicator lamp 14；The rear board of the simulator provided with two fans 21, seven Y11 sockets 22 in a row with it is into another
The four N/SMA sockets 23 and two Y11 sockets 22 of one row.
Feature card line such as Fig. 6 of the utility model embodiment.The CPCI cabinets are the general CPCI cabinets of 8U, described
Cpci bus 2 is 14 groove cpci bus backboards, and the CPCI power supplys 7 are the general 6U CPCI power supplys of radar system, the CPCI
The input and output connector of power supply 7 is PCIH47M400A1, and the processor is single-chip microcomputer or PLC.Remaining person is all common commercially available
Component.Those skilled in the art can be replaced with the device of same or like function according to professional knowledge.
Simulator principle such as Fig. 3-5 of the utility model embodiment, it is each that reception down-converter unit 2 is received to reception antenna
Band signal carries out the conversion of signal level and frequency, carries out amplitude limit and filtering process, providing wideband digital frequency memory device 3 can receive
Signal form.The working frequency of universal simulator is 0.4~18GHz18~40GHz, according to the work of experimental radar before experiment
The working frequency range of frequency setting simulator, the radar emission signal received to being down-converted to intermediate frequency in this frequency range, then
The modulation that target component is carried out to radar signal completes radar echo signal simulation.Target component include distance, Doppler frequency,
Various amplitude scintillations etc.；Wideband digital frequency memory device 3 completes the storage to radar signal waveform, by fast math computing, to working as
Preceding base-band digital waveform enters the modulation of the target components such as line phase, frequency, amplitude, and target data and interference data are passed through into D/A
Converter exports analog intermediate frequency signal；Amplitude control synthesis unit 4 completes the amplitude tune to intermediate frequency echo signal and interference signal
System is synthesized with signal, send transmitting upconverting unit 5；Transmitting upconverting unit 5 is realized to copying in wideband digital frequency memory device 3
IF signal frequency is converted, and makes it identical with radar operating frequency, while the power level of signal produced by lifting, meets it
Demanded power output；Frequently comprehensive 6 the various frequencies needed for simulator work are provided, coordinates system work；CPCI power supplys 7 provide work
Required secondary power supply.
The control principle of the utility model embodiment such as Fig. 9-10, Comprehensive Control and synchronizer 9 realize to up/down frequency conversion,
Modulation, the various control of the work schedule of wideband digital frequency memory device 3, make systems work synchronized, echo is apart from delay process device, distance
Decay analog processor and Doppler frequency shift processor produce the modulated signal needed for more modulation.
The operation principle of the present embodiment is that multifunctional comprehensive signal simulator is connected with reception antenna, transmitting day during work
Line and control computer, radar, to the various electromagnetic wave signals of air-launched, are provided with by emitter and antenna near field somewhere
The simulator of the present embodiment, the reception down-converter unit 2 of simulator receives the transmission signal from radar, carry out amplitude limit, decay,
Amplification, filtering process, then through being once down-converted to intermediate frequency 1.2GHz, be then sent through wideband digital frequency memory device 3 and carry out frequency memory sampling, it is right
Signal is received to be stored.Processor 8 and Comprehensive Control and synchronizer 9 are required according to test process, are determined simulated target and are led
The parameters such as quantity, target range, amplitude, Doppler frequency, the interference type of bullet, and they are transformed into corresponding data control
Code and timing control signal and modulated signal, send digital frequency memory plug-in unit, Doppler modulation, transmitting up-conversion, needed for realizing respectively
Frequency domain, time domain, amplitude control, produce the simulated target signal that meets the requirements, these signals through pre-driver, power amplification,
Radar is transmitted to from transmitting antenna, coordinates radar to carry out function and performance adjustment.Wherein, target echo is exactly apart from delay simulation
Loopback is, it is necessary to use wave memorizer again by the radar emission waveform received delay a period of time for simulator, and the design is used
Digital waveform storage scheme, is realized by wideband digital frequency memory device 3.The simulation of target echo range attenuation is in transmitting upconverting unit
Realized in 5, control computer will receive transmission channel fixed attenuation, target velocity, range information, according to the speedometer of target
The distance of current goal and radar is calculated, and distance is converted into echo dynamic attenuation amount, then by passage fixed attenuation with moving
State decay addition obtains transmission channel overall attenuation, and transmitting upconverting unit 5 is write the values into finally by cpci bus 1.Hair
Upconverting unit 5 is penetrated according to transmission channel overall attenuation, the respective attenuation of each numerical-control attenuator before and after frequency mixer is controlled, so that
Realize the simulation of target echo range attenuation.Digital frequency synthesis technology DDS is used to the Simulation Doppler Frequency-Shift of moving target
Realize, completed by wideband digital frequency memory device 3, the plug-in unit is realized and the AD samplings of IF input signals, down coversion, digital waveform are deposited
Storage and up-conversion, by the way that Doppler frequency shift is added on the NCO of up-conversion passage, making the intermediate frequency waveform of output has Doppler
Frequency displacement.
Echo distance delay principle：
Radar receives the time delay between the echo and radar emission signal of target reflection, reflects target with respect to thunder
Up to the radial distance of antenna.There is following relation between delay time T and the radial distance R of target：
τ=2R/c ... ... ... ... ... ... ... ... (1)
In formula：
- time delay；
- target radial distance；
The aerial spread speed of-electromagnetic wave.
From formula, the delay of target echo is directly proportional to distance, can be by controlling the delay of echo to realize not
The simulation of same distance target.
Range attenuation principle of simulation：
The range attenuation characteristic of target echo：4 powers apart from R of the power of target echo and target to radar are into anti-
Than that is,
Pr=C (Pt/R4)………………………………………(2)
In formula：
The constant that-radar is determined with target component；
The power for the target echo that-radar is received；
The power of-radar transmitting wave；
Distance of-the target to radar.
From formula, distance is met between target echo power and radar emission wave power that radar is received and is declined for four times
Subtract relation.Further, since the distance of simulator and radar is substantially stationary, so radar signal power and thunder that simulator is received
It is directly proportional up to transmission power.Therefore simulator can store the radar emission waveform received, and by controlling transmission channel
Decay come simulated target echo range attenuation.
Doppler frequency shift principle：
When target makees radial motion with respect to radar, target echo will produce the frequency displacement of Doppler, and Doppler frequency can use
Formula is expressed as
fd=2vr/λ…………………………………(3)
In formula：
- launch wavelength, about 0.05m；
- target radial speed.
As can be seen from the above equation, when the speed of simulated target is 600m/s, the Doppler frequency shift of target echo is about
24kHz.The doppler characterization of Moving Target Return substantially shows as a Doppler frequency shift being directly proportional to target speed.
Therefore by adding a Doppler frequency to target echo, it is possible to achieve the doppler characterization simulation of target echo.
Interference simulation principle：
A) false target jamming profile：Produce the time delay and Doppler frequency false target jamming profile of decoy.The system can simulate generation 1
The motion decoy of~8 distances and velocity correlation, can also produce multiple fixed decoys；
B) distance is towed：According to control command, tow rule and tow parameter, range delay interference signal is produced in real time；
C) distance/speed is combined pull-off jamming：Distance/speed is compound when towing, and control mode is essentially identical with b, is
Delay variation is related to speed；
D) briquettability decoy：Briquettability decoy is a kind of decoy pulse sequence of the random distribution with certain density
Row or a kind of random pulse of pulsewidth and repetition cycle random distribution with certain density；
E) broadband barrage noise：Wideband digital frequency memory device is produced according to noise centre frequency, noise bandwidth or noise range
Uniform random number or Gauss rule random number, real-time generation of wideband FM noise；
F) frequency noise is taken aim at：Wideband digital frequency memory device is according to getting out signal in frequency measurement code, frequency measurement and take aim at the guiding of frequency ripple door
Under, uniform random number or Gauss rule random number are produced, narrowband noise signals are produced in real time；
G) frequency sweep noise：The information such as root swept bandwidth, noise bandwidth, sweep rate, are produced according to scanning rule and parameter
Noisy modulated signal control DDS produces the frequency sweep noise interferences of certain scan period and scanning range, and the center of frequency sweep can
Artificial setting；
H) noise pixels detection, noise FM, noise phase modulation and hybrid modulation：Noise combination is modulated, actually noise pixels detection
With the combination of the combination of noise FM, or noise pixels detection and noise phase modulation, when being combined modulation, using above-mentioned noise
Amplitude modulation, noise FM, the method for noise pixels detection are combined modulation, and the A (t), ω (t), φ (t) of signal are modulated, from
And producing has uniformly random or gaussian random rule hybrid modulation noise interferences；
I) interruption modulation：Interruption modulation is impulse modulation interference, and the High Speed Modulation switch that can control radio-frequency channel comes real
It is existing.；
J) continuous wave CO_2 laser：Continuous wave noise jamming is the stepwise derivation that dutycycle is 100%, using FPGA controls
DDS produces noise interferences, and is normally open by the High Speed Modulation switch control of radio-frequency channel, you can realize that continuous wave is made an uproar
Acoustic jamming；
K) comb spectrum is disturbed：Comb spectrum interference is similar with the producing method of frequency sweep noise jamming, utilizes wideband digital frequency memory
The DDS with frequency modulation phase modulation is realized, narrow-band noise is realized by this DDS, then control the centre frequency of narrow-band noise with fixation
Comb spectrum spectrum interval Time share scanning signal, you can realize comb spectrum disturb；
L) smart munition：It is a kind of while having the perturbation technique of deception and noise jamming feature.The advantage of cheating interference
It is the interference using coherent technique, for the radar using coherent processing, for such as PD radars and pulse compression radar, deception is dry
Signal is disturbed into larger accumulation gain can be obtained after radar receiver, be difficult to be attenuated, it is necessary to power with respect to small, shortcoming
It is, if interference enters from the main lobe of radar, easily to expose jammer.Noise jamming is except needing to know that radar information amount is few
Can implement interference advantage outside, be exactly jammer exposure probability it is small, but noise jamming do not have correlation, use
The radar of coherent processing is easily treated relatively based on its corresponding priority, and cannot get high accumulation gain, and it is close to need larger jamming power to compose
Degree, greatly wastes power resource.And smart munition is exactly to be easily accessible noise jamming using the coherence of cheating interference
Radar receiver, and obtain higher accumulation gain.
Rack be simulator in addition to general protection is provided, power supply and bottom line interface are also provided.
The echo of the present embodiment is apart from delay process device, range attenuation analog processor and Doppler frequency shift processor three
The processing of processor process signal is calculated, than an independent processor calculating speed faster, the data volume of processing is bigger, can be with
Handle more signals, can avoid because computational problem cause delay fault the problems such as.
The up-converter system of the present embodiment is divided into 18-26GHz up-converter systems and 26-40GHz up-converter systems, equally may be used
With speed up processing, it is often more important that interference can be reduced, beneficial to mixing and filtering, the transmitting of echo-signal is more beneficial for.
Embodiment 2
It is with the difference of embodiment 1, receives and limiter is provided with before down-converter unit 2.The simulator also includes
The transmitting of one debugging serial interface and backup is with receiving radiofrequency signal interface.
Down-converter unit 2 is received when limiter ensures to receive signal peak power not damage.Debugging serial interface is debugged for connection
Equipment, the transmitting of backup provides backup with receiving radiofrequency signal interface, can be used when breaking down.
In summary, the only preferred embodiment of the utility model, does not limit protection domain of the present utility model with this, all
The equivalent changes and modifications made according to the utility model the scope of the claims and description, is all that the utility model patent covers
Within the scope of.
Claims (6)
1. a kind of multifunctional comprehensive signal simulator, it is characterised in that the simulator includes CPCI cabinets, CPCI cabinets top
Part, the feature card in CPCI cabinets and processor (9), the CPCI cabinets upper-part include interface, indicator lamp and switch, institute
State feature card single including cpci bus (1), reception down-converter unit (2), wideband digital frequency memory device (3), amplitude control synthesis
First (4), transmitting upconverting unit (5), Comprehensive Control and synchronizer (8), frequency comprehensive (6) and CPCI power supplys (7)；Become in the transmitting
Frequency unit (5) includes 18-26GHz up-converter systems and 26-40GHz up-converter systems；The processor (9) includes echo distance
Delay process device, range attenuation analog processor and Doppler frequency shift processor.
2. multifunctional comprehensive signal simulator as claimed in claim 1, it is characterised in that set before receiving down-converter unit (2)
Finite Amplitude device.
3. multifunctional comprehensive signal simulator as claimed in claim 1, it is characterised in that the interface connects including reception antenna
Mouth, transmitting antenna interface, display interface device, keyboard interface and mouse interface.
4. multifunctional comprehensive signal simulator as claimed in claim 3, it is characterised in that the interface also includes a debugging
The transmitting of network interface and backup is with receiving radiofrequency signal interface.
5. multifunctional comprehensive signal simulator as claimed in claim 1, it is characterised in that the front panel front of the simulator
Top is provided with power switch (11) and status indicator lamp, and the status indicator lamp is power supply indicator (12), normal work instruction
Lamp (13) and malfunction indicator lamp (14)；The rear board of the simulator is provided with two fans (21), seven Y11 sockets in a row
(22) and into the four N/SMA sockets (23) and two Y11 sockets (22) of another row.
6. multifunctional comprehensive signal simulator as claimed in claim 1, it is characterised in that the simulator also includes rack,
The rack is provided with rack power supply and interface of the ground wire.
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| CN201621417755.2U CN206400092U (en) | 2016-12-22 | 2016-12-22 | Multifunctional comprehensive signal simulator |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983174A (en) * | 2018-10-19 | 2018-12-11 | 陕西长岭电子科技有限责任公司 | Weather radar integral test system |
| CN109444833A (en) * | 2018-10-19 | 2019-03-08 | 陕西长岭电子科技有限责任公司 | Contactless Doppler radar analogue system |
| CN111505594A (en) * | 2020-04-30 | 2020-08-07 | 中国直升机设计研究所 | Portable radar signal simulator |
| CN111562556A (en) * | 2020-07-06 | 2020-08-21 | 上海无线电设备研究所 | General radio radar and target signal simulator and use method |
| CN112698286A (en) * | 2021-01-14 | 2021-04-23 | 凯迈（洛阳）测控有限公司 | Continuous wave radar target simulator |
| CN113608183A (en) * | 2021-08-03 | 2021-11-05 | 中国人民解放军海军大连舰艇学院 | Hypersonic broadband radio frequency target simulation system |
| CN113985365A (en) * | 2021-11-01 | 2022-01-28 | 扬州宇安电子科技有限公司 | Implementation method for implementing towing interference on seeker radar |
| CN114416024A (en) * | 2022-01-24 | 2022-04-29 | 扬州宇安电子科技有限公司 | Noise modulation method and modulator combining Gaussian distribution and pseudo-random distribution |
| CN113608183B (en) * | 2021-08-03 | 2024-04-26 | 中国人民解放军海军大连舰艇学院 | Hypersonic broadband radio frequency target simulation system |
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2016
- 2016-12-22 CN CN201621417755.2U patent/CN206400092U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983174A (en) * | 2018-10-19 | 2018-12-11 | 陕西长岭电子科技有限责任公司 | Weather radar integral test system |
| CN109444833A (en) * | 2018-10-19 | 2019-03-08 | 陕西长岭电子科技有限责任公司 | Contactless Doppler radar analogue system |
| CN108983174B (en) * | 2018-10-19 | 2022-09-23 | 陕西长岭电子科技有限责任公司 | Meteorological radar integrated test equipment |
| CN111505594A (en) * | 2020-04-30 | 2020-08-07 | 中国直升机设计研究所 | Portable radar signal simulator |
| CN111562556A (en) * | 2020-07-06 | 2020-08-21 | 上海无线电设备研究所 | General radio radar and target signal simulator and use method |
| CN112698286A (en) * | 2021-01-14 | 2021-04-23 | 凯迈（洛阳）测控有限公司 | Continuous wave radar target simulator |
| CN113608183A (en) * | 2021-08-03 | 2021-11-05 | 中国人民解放军海军大连舰艇学院 | Hypersonic broadband radio frequency target simulation system |
| CN113608183B (en) * | 2021-08-03 | 2024-04-26 | 中国人民解放军海军大连舰艇学院 | Hypersonic broadband radio frequency target simulation system |
| CN113985365A (en) * | 2021-11-01 | 2022-01-28 | 扬州宇安电子科技有限公司 | Implementation method for implementing towing interference on seeker radar |
| CN114416024A (en) * | 2022-01-24 | 2022-04-29 | 扬州宇安电子科技有限公司 | Noise modulation method and modulator combining Gaussian distribution and pseudo-random distribution |
| CN114416024B (en) * | 2022-01-24 | 2022-12-02 | 扬州宇安电子科技有限公司 | Noise modulation method and modulator combining Gaussian distribution and pseudo-random distribution |
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