CN202837539U - Aerial target echo signal simulating device - Google Patents
Aerial target echo signal simulating device Download PDFInfo
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- CN202837539U CN202837539U CN 201220557748 CN201220557748U CN202837539U CN 202837539 U CN202837539 U CN 202837539U CN 201220557748 CN201220557748 CN 201220557748 CN 201220557748 U CN201220557748 U CN 201220557748U CN 202837539 U CN202837539 U CN 202837539U
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Abstract
The utility model relates to an aerial target echo signal simulating device, belongs to the field of aircraft radar calibration and positioning, and aims to solve the problem that radar positioning is not precise since conventional aircraft radar calibration requires an aircraft to fly close to the ground. The aerial target echo signal simulating device comprises an antenna system, a signal emitting system, an echo signal receiving system, a DSP (digital signal processing) system, a local oscillate circuit and a synchronizer. An output end of the signal emitting system is connected with an input end of the antenna system, an output end of the antenna system is connected with an input end of the echo signal receiving system, a high-frequency electromagnet wave signal output end of the local oscillate circuit is simultaneously connected with high-frequency electromagnet wave signal input ends of the signal emitting system, the echo signal receiving system and the synchronizer, an output end of the echo signal receiving system is connected with in input end of the DSP system, and a pulse synchronizing signal output end of the synchronizer is simultaneously connected with pulse synchronizing signal input ends of the signal emitting system, the echo signal receiving system and the DSP system.
Description
Technical field
The utility model relates to aerial target echoed signal analogue means, belongs to rebecca calibration, positioning field.
Background technology
Repeatedly occur recently aviation accident both at home and abroad, Flight Safety receives the more tired more concerns of people.The Flight Safety of accurately orientating as of rebecca has played conclusive effect.Traditional rebecca calibration needs the aircraft nap of the earth flight, so that contain many ground unrests in the target echo signal that radar receives, greatly reduce the ability of radar detection, sometimes in addition erroneous judgement disconnected, forfeiture brings difficulty and threat to the detectivity of low latitude and hedgehopping target to radar detection and existence.
Summary of the invention
The utility model purpose is to need the aircraft nap of the earth flight in order to solve traditional rebecca calibration, causes the inaccurate problem of radar fix, and a kind of aerial target echoed signal analogue means is provided.
Aerial target echoed signal analogue means described in the utility model, it comprises antenna system, signal transmitting system, echoed signal receiving system, DSP digital information processing system, local oscillation circuit and synchronizer, the radar signal output terminal of signal transmitting system links to each other with the radar signal input end of antenna system, the output terminal of antenna system links to each other with the radar signal input end of echoed signal receiving system
The high frequency electromagnetic wave signal output terminal of local oscillation circuit links to each other with the high frequency electromagnetic wave signal input end of signal transmitting system, the high frequency electromagnetic wave signal input end of echoed signal receiving system and the high frequency electromagnetic wave signal input end of synchronizer simultaneously,
The radar mean frequency amplifying signal output terminal of echoed signal receiving system links to each other with the radar mean frequency amplifying signal input end of DSP digital information processing system,
The pulse synchronous signal output terminal of synchronizer links to each other with the pulse synchronous signal input end of signal transmitting system, the pulse synchronous signal input end of echoed signal receiving system and the pulse synchronous signal input end of DSP digital information processing system simultaneously.
Advantage of the present utility model: the utlity model has without blind range zone, resolving power is high, radiation power is little, good low probability of intercept and be easy to realize solid state design, be specially adapted to the characteristics of target property research field, by to the design of high directivity and high-gain aerial with choose, utilize the doppler information that carries in the target echo, in separating of frequency domain realize target and clutter, to have the target echo detection of specific Doppler shift out, by signal processing system, the signal processing algorithm of optimizing application is finished the measurement to helicopter speed and height parameter again.System is in the processing capability in real time that guarantees to improve under the precision prerequisite.
Description of drawings
Fig. 1 is the structural representation of aerial target echoed signal analogue means described in the utility model;
Fig. 2 is the structural representation of antenna system;
Fig. 3 is the structural representation of echoed signal receiving system;
Fig. 4 is the structural representation of DSP digital information processing system.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1, the described aerial target echoed signal of present embodiment analogue means, it comprises antenna system 1, signal transmitting system 2, echoed signal receiving system 3, DSP digital information processing system 4, local oscillation circuit 5 and synchronizer 6, the radar signal output terminal of signal transmitting system 2 links to each other with the radar signal input end of antenna system 1, the output terminal of antenna system 1 links to each other with the radar signal input end of echoed signal receiving system 3
The high frequency electromagnetic wave signal output terminal of local oscillation circuit 5 links to each other with the high frequency electromagnetic wave signal input end of signal transmitting system 2, the high frequency electromagnetic wave signal input end of echoed signal receiving system 3 and the high frequency electromagnetic wave signal input end of synchronizer 6 simultaneously,
The radar mean frequency amplifying signal output terminal of echoed signal receiving system 3 links to each other with the radar mean frequency amplifying signal input end of DSP digital information processing system 4,
The pulse synchronous signal output terminal of synchronizer 6 links to each other with the pulse synchronous signal input end of signal transmitting system 2, the pulse synchronous signal input end of echoed signal receiving system 3 and the pulse synchronous signal input end of DSP digital information processing system 4 simultaneously.
Embodiment two: below in conjunction with Fig. 2 present embodiment is described, present embodiment is described further embodiment one, and antenna system 1 comprises antenna 1-1, transmitter 1-2, receiver 1-3 and transmit-receive switch circuit 1-4,
The first input/output terminal of antenna 1-1 links to each other with the first input/output terminal of transmitter 1-2, and the second input/output terminal of antenna 1-1 links to each other with the first input/output terminal of receiver 1-3;
The second input/output terminal of transmitter 1-2 links to each other with the first input/output terminal of transmit-receive switch circuit 1-4, and the second input/output terminal of receiver 1-3 links to each other with the second input/output terminal of transmit-receive switch circuit 1-4;
The radar signal input end of transmit-receive switch circuit 1-4 links to each other with the radar signal output terminal of signal transmitting system 2, and the output terminal of transmit-receive switch circuit 1-4 links to each other with the radar signal input end of echoed signal receiving system 3.
Embodiment three: present embodiment is described below in conjunction with Fig. 3, present embodiment is described further embodiment one or two, echoed signal receiving system 3 comprises power amplifier and mixting circuit 3-1, main intermediate level circuit 3-2, wave detector 3-3, controlled agc circuit 3-4, code translator 3-5 and bandpass filter 3-6
The radar signal input end of power amplifier and mixting circuit 3-1 links to each other with the output terminal of antenna system 1,
The high frequency electromagnetic wave signal output terminal of local oscillation circuit 5 links to each other with the high frequency electromagnetic wave signal input end of power amplifier and mixting circuit 3-1, and the difference frequency signal output terminal of power amplifier and mixting circuit 3-1 links to each other with the signal input part of main intermediate level circuit 3-2,
The high frequency electromagnetic wave signal output terminal of local oscillation circuit 5 also links to each other with the high frequency electromagnetic wave signal input end of main intermediate level circuit 3-2,
The pulse synchronous signal output terminal of synchronizer 6 links to each other with the pulse synchronous signal input end of main intermediate level circuit 3-2,
The gain output terminal of controlled agc circuit 3-4 links to each other with the gain input end of main intermediate level circuit 3-2,
The output terminal of main intermediate level circuit 3-2 links to each other with the input end of wave detector 3-3, the first output terminal of wave detector 3-3 links to each other with the input end of controlled agc circuit 3-4, the second output terminal of wave detector 3-3 links to each other with the input end of code translator 3-5, the output terminal of code translator 3-5 links to each other with the input end of bandpass filter 3-6, and the radar mean frequency amplifying signal output terminal of bandpass filter 3-6 links to each other with the radar mean frequency amplifying signal input end of DSP digital information processing system 4.
Embodiment four: present embodiment is described below in conjunction with Fig. 4, present embodiment is described further embodiment one, two or three, DSP digital information processing system 4 comprises difference frequency signal generator 4-1, A/D convertor circuit 4-2, DSP digital processing chip 4-3, FLASH storer 4-4, single-chip microcomputer 4-5 and RS232 communication interface circuit 4-6
The pulse synchronous signal input end of difference frequency signal generator 4-1 links to each other with the pulse synchronous signal output terminal of synchronizer 6, the output terminal of difference frequency signal generator 4-1 links to each other with the input end of analog signal of A/D convertor circuit 4-2, the digital signal output end of A/D convertor circuit 4-2 links to each other with the difference frequency digital signal input end of DSP digital processing chip 4-3, the intermediate frequency of DSP digital processing chip 4-3 amplifies the radar signal input end and links to each other with the output terminal of echoed signal receiving system 3, the storage input/output terminal of DSP digital processing chip 4-3 links to each other with the input/output terminal of FLASH storer 4-4, the data of DSP digital processing chip 4-3 are processed input/output terminal and are linked to each other with the data processing input/output terminal of single-chip microcomputer 4-5, and the communication input/output terminal of single-chip microcomputer 4-5 links to each other with the input/output terminal of RS232 communication interface circuit.
It is the signal processing chip of TMS320C5402 that DSP digital processing chip 4-3 selects model.
It is the flash memory of SST29LE010 that FLASH storer 4-4 selects model.
It is the single-chip microcomputer of AT89S52 that single-chip microcomputer 4-5 selects model.
Embodiment five: present embodiment is described further embodiment four, and DSP digital information processing system 4 also comprises the 4-7 of input control section, and the output terminal of the 4-7 of input control section links to each other with the external data input end of single-chip microcomputer 4-5.
Embodiment six: present embodiment is described further embodiment four, DSP digital information processing system 4 also comprises the 4-8 of output display section and remote-control radio receiving circuit 4-9, the demonstration output terminal of single-chip microcomputer 4-5 links to each other with the demonstration input end of the 4-8 of output display section, and single-chip microcomputer 4-5 links to each other without the input end of line output terminal with remote-control radio receiving circuit 4-9.
Principle of work:
Claims (9)
1. aerial target echoed signal analogue means, it is characterized in that, it comprises antenna system (1), signal transmitting system (2), echoed signal receiving system (3), DSP digital information processing system (4), local oscillation circuit (5) and synchronizer (6), the radar signal output terminal of signal transmitting system (2) links to each other with the radar signal input end of antenna system (1), the output terminal of antenna system (1) links to each other with the radar signal input end of echoed signal receiving system (3)
The high frequency electromagnetic wave signal output terminal of local oscillation circuit (5) links to each other with the high frequency electromagnetic wave signal input end of signal transmitting system (2), the high frequency electromagnetic wave signal input end of echoed signal receiving system (3) and the high frequency electromagnetic wave signal input end of synchronizer (6) simultaneously
The radar mean frequency amplifying signal output terminal of echoed signal receiving system (3) links to each other with the radar mean frequency amplifying signal input end of DSP digital information processing system (4),
The pulse synchronous signal output terminal of synchronizer (6) links to each other with the pulse synchronous signal input end of signal transmitting system (2), the pulse synchronous signal input end of echoed signal receiving system (3) and the pulse synchronous signal input end of DSP digital information processing system (4) simultaneously.
2. described aerial target echoed signal analogue means according to claim 1 is characterized in that, antenna system (1) comprises antenna (1-1), transmitter (1-2), receiver (1-3) and transmit-receive switch circuit (1-4),
The first input/output terminal of antenna (1-1) links to each other with the first input/output terminal of transmitter (1-2), and the second input/output terminal of antenna (1-1) links to each other with the first input/output terminal of receiver (1-3);
The second input/output terminal of transmitter (1-2) links to each other with the first input/output terminal of transmit-receive switch circuit (1-4), and the second input/output terminal of receiver (1-3) links to each other with the second input/output terminal of transmit-receive switch circuit (1-4);
The radar signal input end of transmit-receive switch circuit (1-4) links to each other with the radar signal output terminal of signal transmitting system (2), and the output terminal of transmit-receive switch circuit (1-4) links to each other with the radar signal input end of echoed signal receiving system (3).
3. described aerial target echoed signal analogue means according to claim 1, it is characterized in that, echoed signal receiving system (3) comprises power amplifier and mixting circuit (3-1), main intermediate level circuit (3-2), wave detector (3-3), controlled agc circuit (3-4), code translator (3-5) and bandpass filter (3-6)
The radar signal input end of power amplifier and mixting circuit (3-1) links to each other with the output terminal of antenna system (1),
The high frequency electromagnetic wave signal output terminal of local oscillation circuit (5) links to each other with the high frequency electromagnetic wave signal input end of power amplifier with mixting circuit (3-1), the difference frequency signal output terminal of power amplifier and mixting circuit (3-1) links to each other with the signal input part of main intermediate level circuit (3-2)
The high frequency electromagnetic wave signal output terminal of local oscillation circuit (5) also links to each other with the high frequency electromagnetic wave signal input end of main intermediate level circuit (3-2),
The pulse synchronous signal output terminal of synchronizer (6) links to each other with the pulse synchronous signal input end of main intermediate level circuit (3-2),
The gain output terminal of controlled agc circuit (3-4) links to each other with the gain input end of main intermediate level circuit (3-2),
The output terminal of main intermediate level circuit (3-2) links to each other with the input end of wave detector (3-3), the first output terminal of wave detector (3-3) links to each other with the input end of controlled agc circuit (3-4), the second output terminal of wave detector (3-3) links to each other with the input end of code translator (3-5), the output terminal of code translator (3-5) links to each other with the input end of bandpass filter (3-6), and the radar mean frequency amplifying signal output terminal of bandpass filter (3-6) links to each other with the radar mean frequency amplifying signal input end of DSP digital information processing system (4).
4. described aerial target echoed signal analogue means according to claim 1, it is characterized in that, DSP digital information processing system (4) comprises difference frequency signal generator (4-1), A/D convertor circuit (4-2), DSP digital processing chip (4-3), FLASH storer (4-4), single-chip microcomputer (4-5) and RS232 communication interface circuit (4-6)
The pulse synchronous signal input end of difference frequency signal generator (4-1) links to each other with the pulse synchronous signal output terminal of synchronizer (6), the output terminal of difference frequency signal generator (4-1) links to each other with the input end of analog signal of A/D convertor circuit (4-2), the digital signal output end of A/D convertor circuit (4-2) links to each other with the difference frequency digital signal input end of DSP digital processing chip (4-3), the intermediate frequency of DSP digital processing chip (4-3) amplifies the radar signal input end and links to each other with the output terminal of echoed signal receiving system (3), the storage input/output terminal of DSP digital processing chip (4-3) links to each other with the input/output terminal of FLASH storer (4-4), the data of DSP digital processing chip (4-3) are processed input/output terminal and are linked to each other with the data processing input/output terminal of single-chip microcomputer (4-5), and the communication input/output terminal of single-chip microcomputer (4-5) links to each other with the input/output terminal of RS232 communication interface circuit.
5. described aerial target echoed signal analogue means according to claim 4, it is characterized in that, DSP digital information processing system (4) also comprises input control section (4-7), and the output terminal of input control section (4-7) links to each other with the external data input end of single-chip microcomputer (4-5).
6. according to claim 4 or 5 described aerial target echoed signal analogue means, it is characterized in that, DSP digital information processing system (4) also comprises output display section (4-8) and remote-control radio receiving circuit (4-9), the demonstration output terminal of single-chip microcomputer (4-5) links to each other with the demonstration input end of output display section (4-8), the linking to each other without the input end of line output terminal with remote-control radio receiving circuit (4-9) of single-chip microcomputer (4-5).
7. described aerial target echoed signal analogue means according to claim 4 is characterized in that, it is the signal processing chip of TMS320C5402 that DSP digital processing chip (4-3) is selected model.
8. described aerial target echoed signal analogue means according to claim 4 is characterized in that, it is the flash memory of SST29LE010 that FLASH storer (4-4) is selected model.
9. described aerial target echoed signal analogue means according to claim 4 is characterized in that, it is the single-chip microcomputer of AT89S52 that single-chip microcomputer (4-5) is selected model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220557748 CN202837539U (en) | 2012-10-18 | 2012-10-18 | Aerial target echo signal simulating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220557748 CN202837539U (en) | 2012-10-18 | 2012-10-18 | Aerial target echo signal simulating device |
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| CN202837539U true CN202837539U (en) | 2013-03-27 |
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| CN 201220557748 Expired - Fee Related CN202837539U (en) | 2012-10-18 | 2012-10-18 | Aerial target echo signal simulating device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558587A (en) * | 2013-10-12 | 2014-02-05 | 奇瑞汽车股份有限公司 | Radar auxiliary testing system and radar auxiliary testing method |
| CN106680788A (en) * | 2016-12-02 | 2017-05-17 | 安徽波维电子科技有限公司 | Intermediate-frequency signal generation system based on radar signal simulator |
| CN112414511A (en) * | 2020-11-06 | 2021-02-26 | 浙江中控技术股份有限公司 | Radar level gauge |
-
2012
- 2012-10-18 CN CN 201220557748 patent/CN202837539U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558587A (en) * | 2013-10-12 | 2014-02-05 | 奇瑞汽车股份有限公司 | Radar auxiliary testing system and radar auxiliary testing method |
| CN106680788A (en) * | 2016-12-02 | 2017-05-17 | 安徽波维电子科技有限公司 | Intermediate-frequency signal generation system based on radar signal simulator |
| CN106680788B (en) * | 2016-12-02 | 2019-07-19 | 安徽波维电子科技有限公司 | A kind of intermediate-freuqncy signal generation system based on radar signal simulator |
| CN112414511A (en) * | 2020-11-06 | 2021-02-26 | 浙江中控技术股份有限公司 | Radar level gauge |
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Granted publication date: 20130327 Termination date: 20131018 |