CN204044825U - A kind of sourceless seism generation device - Google Patents
A kind of sourceless seism generation device Download PDFInfo
- Publication number
- CN204044825U CN204044825U CN201420548230.7U CN201420548230U CN204044825U CN 204044825 U CN204044825 U CN 204044825U CN 201420548230 U CN201420548230 U CN 201420548230U CN 204044825 U CN204044825 U CN 204044825U
- Authority
- CN
- China
- Prior art keywords
- unit
- signal
- clutter
- module
- random number
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001228 spectrum Methods 0.000 claims abstract description 28
- 241000700199 Cavia porcellus Species 0.000 claims abstract description 4
- 238000010606 normalization Methods 0.000 claims description 6
- 241001269238 Data Species 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000001186 cumulative effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Radar Systems Or Details Thereof (AREA)
Abstract
The utility model discloses a kind of sourceless seism generation device, comprise radar signal source, clutter range parameter solving unit, random number generation combination, clutter spectrum analogue unit, signal lag modulating unit and scattering coefficient modulating unit, random number produces combination and comprises the feedback shift register be linked in sequence, linear quantizer and random number combination generation unit, random number combination generation unit is through the 2nd FFT model calling correlation unit, clutter spectrum analogue unit connects clutter spectrum solving unit, clutter spectrum solving unit is through a FFT model calling correlation unit, the output terminal of correlation unit is through IFFT model calling scattering coefficient modulating unit, scattering coefficient modulating unit is also connected with signal lag modulating unit, the output terminal of scattering coefficient modulating unit connects upconverter through signal gain modulating unit, the Low-frequency radar signal madulation that radar signal source produces by upconverter is to radio frequency band, launch and export guinea pig clutter echoed signal.
Description
Technical field
The utility model relates to a kind of signal generation apparatus, and particularly a kind of sourceless seism generation device, belongs to electronic technology field.
Background technology
Radar, by the determination and analysis to target echo, finds target and determines its character.In order to disturb the normal work of radar, often use various jamming countermeasure.Sourceless seism development is relatively simple, and advantage of lower cost is easy to use, can disturb the radar of various system, comprise frequency agile radar, monopulse radar, phased-array radar and imaging radar etc., has standby interference spatial domain concurrently large, the advantage of bandwidth.Therefore, sourceless seism is the important means of radar electronic warfare always.
In radar simulation, radar electronic warfare sourceless seism and detect in various clutter background, tracking target is the important performance index of radar, therefore in each emulation, all needs the sourceless seism test figure under various environment to test the performance of radar.Collecting various sourceless seism data is by experiment a kind of means obtaining test figure, but each experimentation cost is too large, and can only obtain the data under part test environment, can not meet use needs.
Utility model content
The purpose of this utility model is to overcome deficiency of the prior art, provides a kind of sourceless seism generation device, can produce the radar clutter under various environment and sourceless seism data, meets various radar simulation demand.
The technical scheme that the utility model adopts is: a kind of sourceless seism generation device, comprises radar signal source, clutter range parameter solving unit, random number generation combination, clutter spectrum analogue unit, signal lag modulating unit and scattering coefficient modulating unit;
Described random number produces combination and comprises feedback shift register, linear quantizer and the random number combination generation unit be linked in sequence, the correlation unit that the output terminal that random number combines generation unit is multiplied for realizing frequency domain data through the 2nd FFT model calling, described correlation unit is made up of vector multiplier;
The output terminal of described clutter spectrum analogue unit connects the input end of clutter spectrum solving unit, the output terminal of clutter spectrum solving unit accesses the input end of described correlation unit through a FFT module, the output terminal of correlation unit accesses the input end of described scattering coefficient modulating unit through IFFT module;
The input end of scattering coefficient modulating unit is also connected with the output terminal of signal lag modulating unit, the signal gain modulating unit of output terminal through being used for adjustable attenuation of scattering coefficient modulating unit connects upconverter, the Low-frequency radar signal madulation that radar signal source produces by upconverter, to radio frequency band, is launched and is exported guinea pig clutter echoed signal;
Described radar signal source is connected combat parameter management unit respectively with the input end of clutter range parameter solving unit, radar signal source is connected with the input end of signal lag modulating unit respectively with the output terminal of clutter range parameter solving unit, and the output terminal of clutter range parameter solving unit also combines the input end of generation unit respectively with described random number, the input end of a FFT module is connected.
Described clutter spectrum analogue unit comprises the model data store unit for storing clutter spectrum sample data and the model management control module for controlling to export clutter spectrum sample data, described model data store unit adopts ROM storer, described model management control module adopts address to control output module, and address controls output module and is made up of a totalizer and MUX.
Described scattering coefficient modulating unit is made up of three FFT modules and vector multiplication module, two logical inversion control circuits, FFT module is used for realizing fast convolution computing, vector multiplier is for completing the dot product of two groups of frequency domain datas, and logical inversion circuit is used for the conjugate operation of settling signal.
Described linear transform unit is made up of signal delay module, totalizer and multiplier, and signal delay module and totalizer are for completing the cumulative of data, and multiplier is for completing the average of data.
Described signal lag modulating unit is made up of the RAM storer of a twoport and address control module, is realized the time delay of signal by the difference in address changing input signal and output signal.
Described feedback shift register is made up of shift register, logical inverse current feed circuit and normalization unit, shift register is for storing pilot process data, logical inverse current feed circuit has been used for congruence and feedback, and Output rusults is detected, control feedback and circulation, normalization unit is normalized data, equally distributed random number between obtaining 0 ~ 1.
Described combat parameter management unit comprises RAM storer, logic control element and a MUX, described RAM storer be used for the parameter of storage emulation radar, simulated environment parameter is set, logic control element for controlling the selection of MUX between various combat parameter, to control download and the transmission of parameter under different combat.
Compared with prior art, the beneficial effect that the utility model produces is: realize the configuration of radar running parameter by combat parameter management unit, the sourceless seism signal under the various simulated environment of generation and Radar Clutter Signal can be simulated, solve collection sourceless seism data by experiment and cause the technical matters that experimentation cost is large, test figure can not be satisfied the demand, meet various radar simulation demand.The utility model can be used for the various performances detecting radar.
Accompanying drawing explanation
Fig. 1 is circuit block diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.Following examples only for clearly the technical solution of the utility model being described, and can not limit protection domain of the present utility model with this.
As shown in Figure 1, be circuit block diagram of the present utility model,
Clutter range parameter solving unit is connected the output terminal of combat parameter management unit respectively with the input end of radar signal source, combat parameter management unit comprises RAM storer, logic control element and a MUX, RAM storer be used for the parameter of storage emulation radar, simulated environment parameter is set, logic control element for controlling the selection of MUX between various combat parameter, to control download and the transmission of parameter under different combat.
The output terminal of clutter range parameter solving unit connects random number combination generation unit, the 2nd FFT module and signal lag modulating unit respectively, clutter range parameter solving unit comprises multiplier, totalizer and logic control circuit, the parameters such as the spatial domain scope that this unit occupies according to the correlation radar running parameter passed in combat parameter management unit, sourceless seism, calculate the quantity of data cell in distance dimension, azimuth dimension, pitching dimension of division, for controlling a FFT module and random number combination generation unit.
Radar signal source is made up of signal source, waveform control unit and modulation parameter control module, combat parameter management unit provides corresponding radar running parameter to be reference, waveform control unit selects corresponding radar waveform to control, and the radar that modulation parameter control module produces relevant parameter launches Low-frequency radar signal by signal source.The output terminal of radar signal source is connected with the input end of signal lag modulating unit.
Signal lag modulating unit is made up of the RAM storer of a twoport and address control module, the time delay of signal is realized by the difference in address changing input signal and output signal, difference is the amount of delay of signal, and the center of the range unit quantity that divided by clutter range parameter solving unit of amount of delay in the same time and correlation distance unit does not calculate.The output terminal of signal lag modulating unit is connected with the input end of scattering coefficient modulating unit.
Scattering coefficient modulating unit is made up of three FFT modules and vector multiplication module, two logical inversion control circuits, FFT module is used for realizing fast convolution computing, vector multiplier is for completing the dot product of two groups of frequency domain datas, and logical inversion circuit is used for the conjugate operation of settling signal.The input end of scattering coefficient modulating unit is also connected with IFFT module.
IFFT module is made up of two logical inversion circuit and a FFT module, and wherein logical inversion circuit has been used for conjugate operation, and FFT module is equally for realizing fast convolution computing.The input end of IFFT module connects for realizing the correlation unit that frequency domain data is multiplied, and correlation unit is made up of vector multiplier.IFFT module be used for correlation unit modulate there is specific frequency spectrum and have specific amplitude rise and fall distribute clutter scattering data transform to frequency domain.
The input end of correlation unit is connected with the output terminal of clutter spectrum solving unit by a FFT module, produce by the 2nd FFT module and random number the output terminal combined to be connected, correlation unit matches with a FFT module, the 2nd FFT module, for realizing fast convolution computing, make the random array of the specific distribution of generation have correlativity, meet the feature of noise signal.Correlation unit is used for realizing frequency domain data and is multiplied, and obtains the frequency-region signal data after data convolution, and wherein, in second FFT module, counting of FFT needs to be consistent with counting of FFT module, and this parameter is obtained by the transmission of clutter range parameter solving unit.
Random number produces combination and comprises feedback shift register, linear quantizer and the random number combination generation unit be linked in sequence.Random number combination generation unit comprises square law device, delay cell, signal summing elements, vector multiplier, RAM storer, this unit is mainly according to the radar running parameter that simulated environment is arranged, generate specific quantity, specific distribution random number variable data, random number quantity number calculated by clutter range parameter solving unit.
Feedback shift register is made up of shift register, logical inverse current feed circuit and normalization unit, shift register is for storing pilot process data, logical inverse current feed circuit has been used for congruence and feedback, and Output rusults is detected, control feedback and circulation, normalization unit is normalized data, equally distributed random number between obtaining 0 ~ 1.
Linear transform unit is made up of signal delay module, totalizer and multiplier, and signal delay module and totalizer are for completing the cumulative of data, and multiplier is for completing the average of data.
Clutter spectrum analogue unit comprises the model data store unit for storing clutter spectrum sample data and the model management control module for controlling to export clutter spectrum sample data, model data store unit adopts ROM storer, model management control module adopts address to control output module, address controls output module and is made up of a totalizer and MUX, exports different clutter spectrum sample datas by controlling different addresses.The output terminal of clutter spectrum analogue unit connects the input end of clutter spectrum solving unit.
Clutter spectrum solving unit is made up of an error controller, RAM storer, FIR system and feedback circuit.This module mainly by the clutter spectrum sample data that model management control module exports, by the anti-related coefficient solving clutter of iteration, in order to modulation generate random array.
The input end of signal gain modulating unit connects the output terminal of scattering coefficient modulating unit, and the output terminal of signal gain modulating unit connects upconverter.Signal gain modulating unit according to the simulated environment parameter that arranges in emulation combat, for realizing the adjustable attenuation of signal in varying environment.Upconverter is combined unit by DDC able to programme and frequency and is formed.Frequently combine unit and comprise a digital controlled oscillator, control to produce local oscillation signal by controling parameters, controlled to produce coherent signal by DDC able to programme again, the Low-frequency radar signal madulation of just radar signal source generation, to radio frequency band, is launched and is exported guinea pig clutter echoed signal.
FFT module at different levels, signal lag modulating unit, the IF signal processing at different levels such as signal gain modulating unit adopt the X6-3GSPS signal-processing board of our company's independent research, X6-3GSPS signal transacting board is one piece of band 3GSPS 12bit ADC, 3GSPS 12bit DAC, Xilinx Virtex-6 FPGA and vast capacity dynamic storage DDR3 and high speed dual port static memory QDR-II+the standard board of 6U cPCI interface, joining 4Gbit DDR3 SDRAM and 144Mbit QDR-II+storer outside Xilinx Virtex-6 SX315T/475T is that the application of such as radar and direct RF digitization provides a very high performance DSP core.The senior Core Generator (Xilinx System Generator) of VHDL, MATLAB and Xilinx ISE kit and Xilinx company is used to carry out secondary development to X6-3GSPS the Wideband Signal Processing plate, using the Software Radio platform that Xilinx Virtex6 FPGA builds as signal transacting core, signal transacting work at different levels required in sourceless seism generation device can be completed efficiently.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvement and distortion, these improve and distortion also should be considered as protection domain of the present utility model.
Claims (7)
1. a sourceless seism generation device, is characterized in that, comprises radar signal source, clutter range parameter solving unit, random number generation combination, clutter spectrum analogue unit, signal lag modulating unit and scattering coefficient modulating unit;
Described random number produces combination and comprises feedback shift register, linear quantizer and the random number combination generation unit be linked in sequence, the correlation unit that the output terminal that random number combines generation unit is multiplied for realizing frequency domain data through the 2nd FFT model calling, described correlation unit is made up of vector multiplier;
The output terminal of described clutter spectrum analogue unit connects the input end of clutter spectrum solving unit, the output terminal of clutter spectrum solving unit accesses the input end of described correlation unit through a FFT module, the output terminal of correlation unit accesses the input end of described scattering coefficient modulating unit through IFFT module;
The input end of scattering coefficient modulating unit is also connected with the output terminal of signal lag modulating unit, the signal gain modulating unit of output terminal through being used for adjustable attenuation of scattering coefficient modulating unit connects upconverter, the Low-frequency radar signal madulation that radar signal source produces by upconverter, to radio frequency band, is launched and is exported guinea pig clutter echoed signal;
Described radar signal source is connected combat parameter management unit respectively with the input end of clutter range parameter solving unit, radar signal source is connected with the input end of signal lag modulating unit respectively with the output terminal of clutter range parameter solving unit, and the output terminal of clutter range parameter solving unit also combines the input end of generation unit respectively with described random number, the input end of a FFT module is connected.
2. sourceless seism generation device according to claim 1, it is characterized in that, described clutter spectrum analogue unit comprises the model data store unit for storing clutter spectrum sample data and the model management control module for controlling to export clutter spectrum sample data, described model data store unit adopts ROM storer, described model management control module adopts address to control output module, and address controls output module and is made up of a totalizer and MUX.
3. sourceless seism generation device according to claim 1, it is characterized in that, described scattering coefficient modulating unit is made up of three FFT modules and vector multiplication module, two logical inversion control circuits, FFT module is used for realizing fast convolution computing, vector multiplier is for completing the dot product of two groups of frequency domain datas, and logical inversion circuit is used for the conjugate operation of settling signal.
4. sourceless seism generation device according to claim 1, it is characterized in that, described linear transform unit is made up of signal delay module, totalizer and multiplier, and signal delay module and totalizer are for completing the cumulative of data, and multiplier is for completing the average of data.
5. sourceless seism generation device according to claim 1, it is characterized in that, described signal lag modulating unit is made up of the RAM storer of a twoport and address control module, is realized the time delay of signal by the difference in address changing input signal and output signal.
6. sourceless seism generation device according to claim 1, it is characterized in that, described feedback shift register is made up of shift register, logical inverse current feed circuit and normalization unit, shift register is for storing pilot process data, logical inverse current feed circuit has been used for congruence and feedback, and Output rusults is detected, control feedback and circulation, normalization unit is normalized data, equally distributed random number between obtaining 0 ~ 1.
7. sourceless seism generation device according to claim 1, it is characterized in that, described combat parameter management unit comprises RAM storer, logic control element and a MUX, described RAM storer be used for the parameter of storage emulation radar, simulated environment parameter is set, logic control element for controlling the selection of MUX between various combat parameter, to control download and the transmission of parameter under different combat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420548230.7U CN204044825U (en) | 2014-09-23 | 2014-09-23 | A kind of sourceless seism generation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420548230.7U CN204044825U (en) | 2014-09-23 | 2014-09-23 | A kind of sourceless seism generation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204044825U true CN204044825U (en) | 2014-12-24 |
Family
ID=52245468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420548230.7U Expired - Lifetime CN204044825U (en) | 2014-09-23 | 2014-09-23 | A kind of sourceless seism generation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204044825U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107300691A (en) * | 2017-08-30 | 2017-10-27 | 电子科技大学 | A kind of distributed passive co-interfere method for Antiship Missile Terminal Guidance Radar |
| CN107390190A (en) * | 2017-09-19 | 2017-11-24 | 电子科技大学 | A kind of Multi-Target Passive co-interfere method formed into columns based on distribution |
| CN107861105A (en) * | 2017-10-24 | 2018-03-30 | 中国电力科学研究院有限公司 | A kind of test system and method for detecting transmission line of electricity and being influenceed on radar passive jamming |
| CN111524415A (en) * | 2020-05-22 | 2020-08-11 | 南京理工大学 | Radar signal processing teaching platform based on FPGA and working method thereof |
-
2014
- 2014-09-23 CN CN201420548230.7U patent/CN204044825U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107300691A (en) * | 2017-08-30 | 2017-10-27 | 电子科技大学 | A kind of distributed passive co-interfere method for Antiship Missile Terminal Guidance Radar |
| CN107300691B (en) * | 2017-08-30 | 2019-05-21 | 电子科技大学 | A kind of passive co-interfere method of distribution for Antiship Missile Terminal Guidance Radar |
| CN107390190A (en) * | 2017-09-19 | 2017-11-24 | 电子科技大学 | A kind of Multi-Target Passive co-interfere method formed into columns based on distribution |
| CN107390190B (en) * | 2017-09-19 | 2019-08-09 | 电子科技大学 | A kind of Multi-Target Passive co-interfere method formed into columns based on distribution |
| CN107861105A (en) * | 2017-10-24 | 2018-03-30 | 中国电力科学研究院有限公司 | A kind of test system and method for detecting transmission line of electricity and being influenceed on radar passive jamming |
| CN111524415A (en) * | 2020-05-22 | 2020-08-11 | 南京理工大学 | Radar signal processing teaching platform based on FPGA and working method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204044825U (en) | A kind of sourceless seism generation device | |
| CN111123215B (en) | Multi-channel-based full polarization target implementation system and method | |
| CN111183741B (en) | Broadband radar target simulation method and system | |
| CN104166126B (en) | A kind of simulated radar echo method for continuous wave radar | |
| CN203551772U (en) | Airborne chaff bomb interference signal analog simulation device | |
| CN203930058U (en) | A kind of synthetic-aperture radar Area Objects Echo Signal Simulator | |
| CN204086526U (en) | A kind of radar echo simulator | |
| RU2018120544A (en) | SYSTEM AND METHOD FOR GENERATING A SERIES OF HIGH-FREQUENCY SUB-RANGE SIGNALS | |
| CN103018725A (en) | Method for realizing synthetic aperture radar echo simulator | |
| CN103675780B (en) | A kind of radar simulator for the full coherent of Ku wave band | |
| CN102707263A (en) | Multi-frequency multi-base high-frequency ground wave radar system and operating method thereof | |
| CN104215945B (en) | Dual-polarized passive jamming pulse signal precise generation method | |
| CN111830493A (en) | System and method for forecasting intensity of medium-high frequency sound target in underwater target receiving and transmitting separation | |
| CN104459641A (en) | Microwave environment interference signal simulating system | |
| CN111158263B (en) | Method for realizing internal field simulation intermediate control | |
| CN103513232A (en) | Fuze body object simulation method and system | |
| CN106019248A (en) | Chaff-jammed echo simulation method and system | |
| CN113176545A (en) | Gun position reconnaissance and calibration radar training simulation system and method | |
| CN204241688U (en) | A kind of dual polarization target seeker simulator | |
| CN103760539A (en) | Multi-target radar echo simulation system and method | |
| CN203773046U (en) | Multifunctional radar data processing simulator | |
| CN110988821B (en) | Radar target simulator and control method thereof | |
| CN213149226U (en) | Radar echo simulator | |
| RU2443058C2 (en) | Method for coherent interference formation | |
| CN104698443A (en) | Simulation test simulating apparatus and system of complex radiofrequency interference |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Jiang Changyong Inventor after: Chen Haikun Inventor after: Yin Guang Inventor before: Yin Guang |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: YIN GUANG TO: JIANG CHANGYONG CHEN HAIKUN YIN GUANG |