CN108802702A - A kind of simulator based on radar echo signal - Google Patents
A kind of simulator based on radar echo signal Download PDFInfo
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- CN108802702A CN108802702A CN201810654613.5A CN201810654613A CN108802702A CN 108802702 A CN108802702 A CN 108802702A CN 201810654613 A CN201810654613 A CN 201810654613A CN 108802702 A CN108802702 A CN 108802702A
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- logic circuit
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- programmable logic
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- radar echo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4052—Means for monitoring or calibrating by simulation of echoes
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a kind of simulators based on radar echo signal,Including computer and ultra-large programmable logic circuit,The computer is connected with ultra-large programmable logic circuit by input-buffer,And the computer is connected by loaded circuit with ultra-large programmable logic circuit,The ultra-large programmable logic circuit is mutually communicated with mass storage,And the ultra-large programmable logic circuit is connected with high speed D/A by exporting caching,The output end of the high speed D/A is to export radar echo signal,The input terminal of the ultra-large programmable logic circuit is connected with the output end of timing control and address generator,And it is provided with Multichannel radar simulated radar echo in the ultra-large programmable logic circuit,The input terminal of the timing control and address generator is connected with PRT synchronizing signals and due north pulse,Logic circuit outside not only simplifying,The service life used can be extended,And the simulation of multi-channel back wave signal can be carried out.
Description
Technical field
The present invention relates to radar return field, specially a kind of simulator based on radar echo signal.
Background technology
In radar detection, the electromagnetic wave that radar emission goes out encounters object back reflection, scattering, is connect by radar receiver
It receives, various echoes is shown on radarscope.These echoes are varied, the analysis of meteorological subject and answer for convenience
With can echo be divided into two major classes：Weather echo and non-meteorological echo.But in the prior art, the mould of radar echo signal
Quasi- device has the following disadvantages problem mostly：
For example, application No. is 201110268697.7, patent name be a kind of echo simulation device for Doppler radar and its
The patent of invention of implementation method：
Its by antenna coupler, combining damping assemblies, converter unit, modulation unit, echo acquirement device can structure with
It realizes radar echo simulation, but needs more external circuit, to affect the service life of the device.
But the existing simulator based on radar echo signal has the following defects：
(1) commonly the simulator based on radar echo signal needs more outside or auxiliary circuit, and it is external or
Person's auxiliary circuit is easy to be destroyed by extraneous factor, to leverage the service life of simulator；
(2) simulator for being generally basede on radar echo signal is most only with single pass radar echo simulation, thus
The use for greatly limiting simulator will be brought prodigious when especially for a variety of different radar echo simulations to user
Trouble.
Invention content
In order to overcome the shortcomings of that prior art, the present invention provide a kind of simulator based on radar echo signal,
Not only it had solved the problems, such as the use that common simulation device band is come, but also has considerably increased the usable degree of simulator, and improved simulation
Efficiency, generated for radar return and the convenience of bigger be provided, and reduce external and auxiliary circuit use, to prolong significantly
The service life for having grown device can effectively solve the problem that the problem of background technology proposes.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of simulator based on radar echo signal, including computer and ultra-large programmable logic circuit, institute
State computer and ultra-large programmable logic circuit be connected with by input-buffer, and the computer by loaded circuit with
Ultra-large programmable logic circuit is connected, and the ultra-large programmable logic circuit is mutually communicated with mass storage,
And the ultra-large programmable logic circuit is connected with high speed D/A by exporting caching, and the output end of the high speed D/A is with defeated
Go out radar echo signal；
The input terminal of the ultra-large programmable logic circuit is connected with the output end of timing control and address generator,
And Multichannel radar simulated radar echo, the timing control and ground are provided in the ultra-large programmable logic circuit
The input terminal of location generator is connected with PRT synchronizing signals and due north pulse.
Further, the computer is responsible for generating radar parameter, target information, track data and noise clutter number
According to simulation calculating, the targetpath that operation is obtained, noise clutter can be carried out according to different working condition and different motion form
Code and status data store in the form of a file, are provided for being called when realistic simulation, and mass storage Program
Source is loaded into ultra-large programmable logic circuit.
Further, the ultra-large programmable logic circuit is the program by being stored in ram in slice it is arranged
Working condition, it is provided with multipath radar signal simulator group in the Multichannel radar simulated radar echo and radio frequency output is single
Member is equipped with multiple radar signal simulators and composite signal, multiple radars in the multipath radar signal simulator group
There are two input terminals for signal simulator tool, and the radar signal simulator is connected with output unit by composite signal.
Further, local oscillator, upconverter and width phase control unit, the upper change are provided in the radio frequency output unit
The input terminal of frequency device is connected with output unit, and the upconverter is connected with width phase control unit, the local oscillator and upper change
The communication interconnection of frequency device.
Further, the timing control and address generator are realized by EPLD devices, are received and are come from radar signal
The due north pulse of processor and PRT synchronizing signals voluntarily generate the control signal needed for 13 antenna bearingt incremental codes, each module
And output address.
Further, the mass storage is mainly used to store and is compiled to ultra-large programmable logic circuit
Various programs, power on and be loaded into ultra-large programmable logic circuit by computer control.
Further, computer internal program is directly inputted in ultra-large programmable logic circuit by the loaded circuit
It is adjusted in real time.
Further, the high speed D/A is made of MX7541 chips, and the high speed D/A will be will export number in caching
Digital data is converted into analogue data.
Further, the output end of the timing control and address generator by convey due north mark to input-buffer,
Ultra-large programmable logic circuit and output cache.
Further, the ultra-large programmable logic circuit uses the FPGA of III systems of Stratix, and described super
Extensive programmable logic circuit carries out serial communication with computer.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) present invention uses ultra-large programmable logic circuit, not only simple by ultra-large programmable logic circuit
The logic circuit in outside the pale of civilization portion, additionally it is possible to extend the service life of the simulator, and can facilitate and be adjusted in time, moreover it is possible to
Receive the generation of the due north mark and main pulse mark progress target echo of radar signal processor；
(2) it is provided with Multichannel radar simulated radar echo in ultra-large programmable logic circuit of the invention, passed through
Multichannel radar simulated radar echo can carry out the generation of multiplexer channel radar echo signal, so that people are to different thunders
Up to the demand of echo-signal, so convenient for users to operation and control.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the Multichannel radar simulated radar echo structural schematic diagram of the present invention.
Figure label：
1- computers；The ultra-large programmable logic circuit of 2-；3- input-buffers；4- loaded circuits；5- massive stores
Device；6- output cachings；7- high speed D/As；8- timing control and address generator；9- Multichannel radar simulated radar echos；
901- multipath radar signal simulator groups；902- radio frequency output units；903- radar signal simulators；904- is synthesized
Signal；905- output units；906- local oscillators；907- upconverter；908- width phase control units.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, the present invention provides a kind of simulator based on radar echo signal, including computer 1 and super
Extensive programmable logic circuit 2, the computer 1 are connected with ultra-large programmable logic circuit 2 by input-buffer 3,
And the computer 1 is connected by loaded circuit 4 with ultra-large programmable logic circuit 2, wherein the computer 1 is responsible for
Radar parameter, target information, track data and noise clutter data are generated, it can be according to different working condition and different motion shape
Formula carries out simulation calculating, and targetpath, noise clutter code and status data that operation obtains are stored in the form of a file,
It is loaded into ultra-large programmable logic circuit 2 for being called when realistic simulation, and 5 Program resource of mass storage,
By ultra-large programmable logic circuit 2 to simplify external logic circuit, making for the simulator on the one hand can be extended
With the service life, it on the other hand can also facilitate and be adjusted in time；
It should be added that the mass storage 5 is mainly used to storage to ultra-large programmable logic electricity
The various programs that road 2 is compiled are powered on by the control of computer 1 and are loaded into ultra-large programmable logic circuit 2, wherein
1 internal program of computer is directly inputted in ultra-large programmable logic circuit 2 by the loaded circuit 4 to be adjusted in real time,
And the ultra-large programmable logic circuit 2 uses the FPGA of III systems of Stratix, and it is described ultra-large programmable
Logic circuit 2 carries out serial communication with computer 1.
Specific implementation, ultra-large programmable logic circuit 2 carry out serial communication with computer 1, and antenna scans warp every time
When crossing due north, ultra-large programmable logic circuit 2 is primary to the transmission request of 1 transmission data of computer, and computer 1 is connected to data
After transmission request, next secondary antenna is sent to ultra-large programmable logic circuit 2 by RS-232 interface or RS-485 interfaces
The ginsengs such as the target lot number and the orientation of signal wave shape code and each batch of target of scan period, distance, signal-to-noise ratio, Doppler frequency
Number, then, ultra-large programmable logic circuit 2 read the parameter in input-buffer and carry out the orientation code of EPLD, and pass through fortune
It calculates, the superposition of processing and the scheduling generation of completion radar waveform in real time, the modulation and noise clutter of doppler information, and according to mesh
The delay of target distance by I, Q two-way echo and noise data write-in output caching, finally passes through under correct timing control successively
The orthogonal video simulation output of I, Q two-way is formed after high speed D/A conversion, filtering, amplification.
As depicted in figs. 1 and 2, the ultra-large programmable logic circuit 2 is mutually communicated with mass storage 5, and
And the ultra-large programmable logic circuit 2 is connected with high speed D/A 7 by exporting caching 6, the output end of the high speed D/A 7 with
Radar echo signal is exported, wherein the ultra-large programmable logic circuit 2 is the program by being stored in ram in slice to set
Its working condition is set, multipath radar signal simulator group 901 is provided in the Multichannel radar simulated radar echo 9 and is penetrated
Frequency output unit 902 is equipped with multiple radar signal simulators 903 and synthesis in the multipath radar signal simulator group 901
Signal 904, there are two input terminals for multiple tools of the radar signal simulator 903, and the radar signal simulator 903 passes through
Composite signal 904 is connected with output unit 905, and is provided with local oscillator 906, upconverter in the radio frequency output unit 902
907 and width phase control unit 908, the input terminal of the upconverter 907 is connected with output unit 905, and the up-conversion
Device 907 is connected with width phase control unit 908, and the local oscillator 906 communicates interconnection with upconverter 907, passes through multipath radar signal
Simulator group 901 and radio frequency output unit 902 not only simplify system hardware structure, reduction system volume, but also improve channel
Extended capability reduces system cost, and by Multichannel radar simulated radar echo 9, can carry out multiplexer channel radar and return
The generation of wave signal, the demand in favor of people to different radar echo signals, and then convenient for users to operation.
It should be added that the high speed D/A 7 is made of MX7541 chips, and the high speed D/A 7 is with will be defeated
Go out numerical data in caching 6 and is converted into analogue data；
As shown in Figure 1, the input terminal of the ultra-large programmable logic circuit 2 is connected with timing control and address occurs
The output end of device 8, and Multichannel radar simulated radar echo 9, institute are provided in the ultra-large programmable logic circuit 2
The input terminal for stating timing control and address generator 8 is connected with PRT synchronizing signals and due north pulse, wherein the timing control and
Address generator 8 is realized by EPLD devices, receives the due north pulse from radar signal processor and PRT synchronizing signals,
Voluntarily generate 13 antenna bearingt incremental codes, the control signal needed for each module and output address, and the timing control and
The output end of address generator 8 is by conveying due north mark to input-buffer 3, ultra-large programmable logic circuit 2 and output
Caching 6, by timing control and address generator 8 with control radar.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (10)
1. a kind of simulator based on radar echo signal, including computer (1) and ultra-large programmable logic circuit
(2), it is characterised in that：The computer (1) is connected with ultra-large programmable logic circuit (2) by input-buffer (3), and
And the computer (1) is connected by loaded circuit (4) with ultra-large programmable logic circuit (2), it is described it is ultra-large can
Program logic circuit (2) is mutually communicated with mass storage (5), and the ultra-large programmable logic circuit (2) is logical
It crosses output caching (6) and is connected with high speed D/A (7), the output end of the high speed D/A (7) is to export radar echo signal；
The input terminal of the ultra-large programmable logic circuit (2) is connected with the output of timing control and address generator (8)
End, and it is provided with Multichannel radar simulated radar echo (9) in the ultra-large programmable logic circuit (2), when described
Sequence controls and the input terminal of address generator (8) is connected with PRT synchronizing signals and due north pulse.
2. a kind of simulator based on radar echo signal according to claim 1, it is characterised in that：The computer
(1) it is responsible for generating radar parameter, target information, track data and noise clutter data, it can according to different working condition and not
Simulation calculating is carried out with forms of motion, the targetpath that operation is obtained, noise clutter code and status data are in the form of a file
It stores, ultra-large may be programmed is loaded into for being called when realistic simulation, and mass storage (5) Program resource
Logic circuit (2).
3. a kind of simulator based on radar echo signal according to claim 1, it is characterised in that：The super large rule
Mould programmable logic circuit (2) is the program by being stored in ram in slice its working condition, the Multichannel radar is arranged
It is provided with multipath radar signal simulator group (901) and radio frequency output unit (902), the multichannel in simulated radar echo (9)
Multiple radar signal simulators (903) and composite signal (904) are installed in radar signal simulator group (901), it is multiple described
There are two input terminals for radar signal simulator (903) tool, and the radar signal simulator (903) passes through composite signal
(904) it is connected with output unit (905).
4. a kind of simulator based on radar echo signal according to claim 3, it is characterised in that：The radio frequency is defeated
Go out in unit (902) and is provided with local oscillator (906), upconverter (907) and width phase control unit (908), the upconverter
(907) input terminal is connected with output unit (905), and the upconverter (907) is connected with width phase control unit
(908), the local oscillator (906) communicates interconnection with upconverter (907).
5. a kind of simulator based on radar echo signal according to claim 1, it is characterised in that：The sequential control
System and address generator (8) are realized by EPLD devices, and it is synchronous with PRT to receive the due north pulse from radar signal processor
Signal voluntarily generates control signal and output address needed for 13 antenna bearingt incremental codes, each module.
6. a kind of simulator based on radar echo signal according to claim 1, it is characterised in that：The large capacity
Memory (5) is mainly used to the various programs that storage is compiled ultra-large programmable logic circuit (2), passes through computer
(1) control, which powers on, is loaded into ultra-large programmable logic circuit (2).
7. a kind of simulator based on radar echo signal according to claim 1, it is characterised in that：The load electricity
Computer (1) internal program is directly inputted in ultra-large programmable logic circuit (2) by road (4) to be adjusted in real time.
8. a kind of simulator based on radar echo signal according to claim 1, it is characterised in that：The high speed D/A
(7) it is made of MX7541 chips, and the high speed D/A (7) is converted into simulation number will export numerical data in caching (6)
According to.
9. a kind of simulator based on radar echo signal according to claim 1, it is characterised in that：The sequential control
The output end of system and address generator (8) is by conveying due north mark to input-buffer (3), ultra-large programmable logic circuit
(2) and output caches (6).
10. a kind of simulator based on radar echo signal according to claim 1, it is characterised in that：The super large
Scale programmable logic circuit (2) uses the FPGA of III systems of Stratix, and the ultra-large programmable logic circuit
(2) serial communication is carried out with computer (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810654613.5A CN108802702A (en) | 2018-06-22 | 2018-06-22 | A kind of simulator based on radar echo signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810654613.5A CN108802702A (en) | 2018-06-22 | 2018-06-22 | A kind of simulator based on radar echo signal |
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| CN108802702A true CN108802702A (en) | 2018-11-13 |
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| CN201810654613.5A Withdrawn CN108802702A (en) | 2018-06-22 | 2018-06-22 | A kind of simulator based on radar echo signal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109326172A (en) * | 2018-12-10 | 2019-02-12 | 中船重工（武汉）凌久电子有限责任公司 | A kind of Radar Proficiency Simulator based on model framework |
| CN112698275A (en) * | 2019-10-22 | 2021-04-23 | 北京华航无线电测量研究所 | Reconfigurable radar receiving channel synthesis control device |
| US11486963B2 (en) | 2019-08-20 | 2022-11-01 | Keysight Technologies, Inc. | Multiple input multiple output (MIMO) target emulation system and method for testing MMWAVE radar sensor |
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| CN102221686A (en) * | 2011-04-06 | 2011-10-19 | 中国船舶重工集团公司第七○九研究所 | Simulation method for customized multipath radar videos |
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| CN102221686A (en) * | 2011-04-06 | 2011-10-19 | 中国船舶重工集团公司第七○九研究所 | Simulation method for customized multipath radar videos |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109326172A (en) * | 2018-12-10 | 2019-02-12 | 中船重工（武汉）凌久电子有限责任公司 | A kind of Radar Proficiency Simulator based on model framework |
| CN109326172B (en) * | 2018-12-10 | 2020-12-04 | 中船重工（武汉）凌久电子有限责任公司 | Radar training simulator based on model architecture |
| US11486963B2 (en) | 2019-08-20 | 2022-11-01 | Keysight Technologies, Inc. | Multiple input multiple output (MIMO) target emulation system and method for testing MMWAVE radar sensor |
| CN112698275A (en) * | 2019-10-22 | 2021-04-23 | 北京华航无线电测量研究所 | Reconfigurable radar receiving channel synthesis control device |
| CN112698275B (en) * | 2019-10-22 | 2023-08-15 | 北京华航无线电测量研究所 | Reconfigurable radar receiving channel synthesis control device |
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Application publication date: 20181113 |