CN204515166U - A kind of foreign body detection system for airfield runway based on synthetic-aperture radar - Google Patents
A kind of foreign body detection system for airfield runway based on synthetic-aperture radar Download PDFInfo
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- CN204515166U CN204515166U CN201520224580.2U CN201520224580U CN204515166U CN 204515166 U CN204515166 U CN 204515166U CN 201520224580 U CN201520224580 U CN 201520224580U CN 204515166 U CN204515166 U CN 204515166U
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Abstract
The utility model provides a kind of foreign body detection system for airfield runway based on synthetic-aperture radar, comprise the mobile platform be arranged near airfield runway, be fixed on the synthetic-aperture radar on mobile platform, the control center communicated to connect with synthetic-aperture radar, mobile platform is driven by drive unit and moves along airfield runway, drive unit is connected with control center, drive unit drives mobile platform to move along runway according to radar motion control command, complete the scanning to airfield runway, to obtain high-resolution two dimension airfield runway SAR image, the high-resolution two dimension airfield runway SAR image of control center also for obtaining according to synthetic-aperture radar scanning carries out runway foreign bodies detection.The utility model utilizes synthetic-aperture radar to realize high resolution range apart from upper pulse compression, orientation is improved the technical system advantage of azimuthal resolution by aperture synthetic, can reduce clutter detecting unit area, thus improves the detectability to the small foreign matter of runway.
Description
Technical field
The utility model relates to radar signal processing field, specifically a kind of foreign body detection system for airfield runway based on synthetic-aperture radar.
Background technology
Air France Concorde air accident of plane in 2000, this time airplane crash causes altogether 109 people on machine, ground 4 people, totally 113 people are wrecked, follow-up investigation shows, the cause of airplane crash is the metal fragment on runway that a upper flight aircraft drops, and punctures with the Concorde tire in take-off run, the fragment that tire blow-out produces hits multiple fuel tank, causes aircraft port wing to rise fighting crashing very soon.According to data, in aviation injury event, what runway foreign matter caused accounts for 73.4%.Therefore, runway foreign bodies detection is significant to guarantee aircraft safety.
Airfield runway foreign matter refers to and anyly appears at airport operation region, and may cause damage to airport or the hurtful foreign substances of aircraft, and the world is commonly referred to as Foreign ObjectDebris (FOD).After consonance airplane crash, countries in the world are all in development correlation-detection system.As the Tarsier system of Britain, acquisition sensor uses frequency of operation to be 94.5Hz, and system is the millimetre-wave radar of continuous wave frequency (FMCW), and reliably can detect Radar Cross Section on runway is 0.01m
2foreign material and locate, can automatic detection and identification in real time be carried out.In system upgrade subsequently, installed again video monitoring equipment additional, staff can confirm result of detection, improves detection accuracy rate.The FODetect system of Israel, face, the road detecting unit SDU covering whole piece airfield runway by 120 forms, and these cellular installations are on runway edge lights, and each SDU comprises the relatively little 77GHz millimetre-wave radar of volume and optical camera.This system works efficiency is very high, only needs can to complete for 30 seconds to the scanning of runway and provides result of detection.The FODFinder system of the U.S., acquisition sensor comprises millimetre-wave radar and optical camera, is installed on vehicle roof.The maximum feature of this system to move, and Vehicle Speed 50km/h during detection, not only can detect the FOD on runway, and can detect nearly all region such as taxiway, hardstand.Once detect FOD, staff can get off immediately and reclaim FOD and to go forward side by side line item.The iFerret system of Singapore, is equipped with advanced high-resolution camera, scans in real time to airfield runway, can foreign matter automatically on detection and Identification runway, and intelligent image process software can adjust for different illumination conditions.Domesticly also to do a lot in this field.Chengdu Sai Ying company once developed the model machine that FOD detects radar, and Shanghai Institute for Advanced Study of the Chinese Academy of Sciences, for FOD application scenarios, had carried out the test of monostatic radar principle.
But the data according to current existing foreign body detecting system shows, and the detectivity for miniature foreign matter is limited.It is preferred that the millimetre-wave radar in Britain Tarsier system, detect foreign matter also can only at more than 10cm, be difficult to detect foreign matter less on airfield runway.
Utility model content
The utility model provides a kind of foreign body detection system for airfield runway based on synthetic-aperture radar, synthetic-aperture radar is utilized to improve azimuthal resolution in orientation to by aperture synthesis, range resolution is improved to by wideband pulse compression in distance, effectively reduce clutter cellar area, compared with conventional radar, clutter cellar area reduces 2-3 the order of magnitude, greatly improves the detectability of airfield runway minute metallic foreign matter.
A kind of foreign body detection system for airfield runway based on synthetic-aperture radar, comprise the mobile platform be arranged near airfield runway, be fixed on the synthetic-aperture radar on mobile platform, the control center communicated to connect with synthetic-aperture radar, mobile platform is driven by drive unit and moves along airfield runway, drive unit is connected with control center, described control center is used for sending radar motion control command to drive unit, drive unit drives mobile platform to move along runway according to radar motion control command, complete the scanning to airfield runway, to obtain high-resolution two dimension airfield runway SAR image, the high-resolution two dimension airfield runway SAR image of described control center also for obtaining according to synthetic-aperture radar scanning carries out runway foreign bodies detection.
Further, described detection system also comprises the warning device be connected with described control center, and when described control center detects runway foreign matter, described control center controls described warning device and carries out alert process.
Further, described synthetic-aperture radar comprise connect successively frequency synthesizer, launch subsystem, antenna feeder subsystem, HF receiving subsystem, signal transacting subsystem, communication subsystem, the signal output part of frequency synthesizer is connected with the signal input part of transmitting subsystem and HF receiving subsystem.
Further, described signal transacting subsystem comprises distance to focus module, orientation to focus module, the cache module that is connected to focus module and orientation to focus module with distance;
Described distance for receiving the digital medium-frequency signal after the conversion of described HF receiving subsystem, realizes distance to focusing process by pulse compression technique to focus module;
Described orientation to focus module for the treatment of distance to the data focused on after process, first carry out motion compensation, then by matched filtering realize orientation to focusing, thus obtain the two-dimensional SAR image of high resolving power airfield runway;
Described cache module is for storing distance to focus module and orientation to the ephemeral data in focus module processing procedure.
The utility model make use of synthetic-aperture radar and realizes high resolution range apart from upper pulse compression, orientation is improved the technical system advantage of azimuthal resolution by aperture synthetic, clutter detecting unit area can be reduced, thus improve the detectability to the small foreign matter of runway.Applying of this utility model, can ensure the safety of aircraft in the Runway operation stage further.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model based on one of them embodiment of foreign body detection system for airfield runway of synthetic-aperture radar;
Fig. 2 is the circuit structure block diagram of synthetic-aperture radar in the utility model;
Fig. 3 is the circuit structure block diagram of signal transacting subsystem in synthetic-aperture radar;
Fig. 4 is that mobile platform of the present utility model is along parallel runways installation system operating diagram;
Fig. 5 is mobile platform vertical runway installation system operating diagram of the present utility model.
In figure: 1-mobile platform, 2-synthetic-aperture radar, 3-control center, 4-warning device, 11-drive unit, 21-frequency synthesizer, 22-launch subsystem, 23-antenna feeder subsystem, 24-HF receiving subsystem, 25-signal transacting subsystem, 26-communication subsystem, 251-distance to focus module, 252-orientation to focus module, 253-cache module.
Embodiment
Below in conjunction with the accompanying drawing in the utility model, the technical scheme in the utility model is clearly and completely described.
Figure 1 shows that the structural representation of the utility model based on one of them embodiment of foreign body detection system for airfield runway of synthetic-aperture radar, the described foreign body detection system for airfield runway based on synthetic-aperture radar comprises and is arranged at the mobile platform 1 near airfield runway, the synthetic-aperture radar 2 be fixed on mobile platform 1, the control center 3 that communicates to connect with synthetic-aperture radar 2, mobile platform 1 is driven by drive unit 11 and moves along airfield runway, and drive unit 11 is connected with control center 3.Described control center 3 is for sending radar motion control command to drive unit 11, drive unit 11 drives mobile platform 1 to move along runway according to radar motion control command, complete the scanning to airfield runway, to obtain high-resolution two dimension airfield runway SAR image, described control center 3 also carries out runway foreign bodies detection for scanning the high-resolution two dimension airfield runway SAR image obtained according to synthetic-aperture radar 2.
In another embodiment, described detection system also comprises the warning device 4 be connected with described control center 3, and when described control center 3 detects runway foreign matter, described control center 3 controls described warning device 4 and carries out alert process.
Please further refer to Fig. 2, described synthetic-aperture radar 2 comprise connect successively frequency synthesizer 21, launch subsystem 22, antenna feeder subsystem 23, HF receiving subsystem 24, signal transacting subsystem 25, communication subsystem 26, the signal output part of frequency synthesizer 21 is connected with the signal input part of transmitting subsystem 22 and HF receiving subsystem 24.
Described synthetic-aperture radar 2 working frequency range is millimere-wave band (30GHz ~ 100GHz), and the form of transmitting is large Timed automata signal, adopts pulsed operation system.The linear FM signal that described frequency synthesizer 21 needs for generation of radar, provides and to launch in subsystem 22 for the local oscillation signal for down coversion in up-conversion local oscillation signal and HF receiving subsystem 24;
Described transmitting subsystem 22 comprises upconverter, radio-frequency filter, radio-frequency power amplifier composition, and its function radiofrequency signal is amplified to need power, is transferred to antenna feeder subsystem 23.
Described antenna feeder subsystem 23 comprises transmit-receive switch, waveguide, dual-mode antenna, wherein receives and dispatches quick closing valve and realizes radar system conversion between transmit and receive.During radar emission, emission of radio frequency signals transmitting subsystem 22 sent here, to aerial, realizes irradiating airfield runway; At reception period, receive airfield runway to the backscatter signal of emitting radio frequency signal.
Described HF receiving subsystem 24 comprises low noise amplifier, frequency mixer, wave filter, power amplifier, A/D transducer etc.The faint airfield runway echoed signal that antenna feeder subsystem 23 is sent here by low noise amplifier is amplified, intermediate-freuqncy signal is transformed to through frequency mixer, after filter filtering and power amplifier amplify, send A/D transducer to convert and simulating signal is converted to digital medium-frequency signal, for signal processing applications.
Please also refer to Fig. 3, described signal transacting subsystem 25 comprises distance to focus module 251, orientation to focus module 252, the cache module 253 that is connected to focus module 251 and orientation to focus module 252 with distance.
Described distance for receiving the digital medium-frequency signal after the conversion of described HF receiving subsystem 24, realizes distance to focusing process by pulse compression technique to focus module 251; Described orientation processes distance to the data focused on after process to focus module 252, first carry out motion compensation, then by matched filtering realize orientation to focusing, thus obtain high resolving power airfield runway (comprising the foreign matter on airport) two-dimensional SAR image.Described cache module 253 is for the ephemeral data in stores processor process.
Described communication subsystem 26 is for completing the communication function of described synthetic-aperture radar 2 and control center 3, described communication subsystem 26 can receive control center 3 to the steering order of radar, also radar duty, radar return data, SAR image data can be transferred to control center 3.
Fig. 4 be mobile platform of the present utility model along parallel runways installation system operating diagram, mobile platform 1 can be motor vehicles, and described synthetic-aperture radar 2 moves around along airfield runway on the rolling stock.Motor vehicles place track length 3100 meters, airport runway length 3000 meters, runway is wide 60 meters; Track and nearest runway border 100 meters, track is height 3 meters overhead, and synthetic-aperture radar 2 movement velocity is 20m/s, then now radar clutter detecting unit is 0.0075m
2, be better than existing detection system performance.
Fig. 5 is mobile platform vertical runway installation system operating diagram of the present utility model, and its course of work is similar to Fig. 4 in force, repeats no more.Be with difference in Fig. 4, motor vehicles can adopt shorter sliding rail, are convenient to the motion control of synthetic-aperture radar 2, and reduce platform cost.
The course of work of the present utility model is:
On airfield runway side, correct position settles the utility model system, and first settle mobile platform 1, synthetic-aperture radar 2 is placed in mobile platform 1, and synthetic-aperture radar 2 and control center 3 complete communication linkage by wired or wireless mode.Control center 3 provides radar motion control command, and mobile platform 1 controls, along track uniform motion, to complete the scanning to airfield runway by this order; Meanwhile, synthetic-aperture radar 2 provides transmitted waveform by frequency synthesizer 21, after launching subsystem 22 amplification, send antenna feeder subsystem 23 to launch; The backscatter signal of airfield runway is after antenna feeder subsystem 23 receives, send HF receiving subsystem 24 through amplifying, being mixed to intermediate-freuqncy signal, export digital medium-frequency signal to signal transacting subsystem 25 after A/D conversion after, obtain high-resolution two dimension airfield runway SAR image, and complete runway foreign bodies detection.Runway foreign bodies detection can complete at radar or control center, and foreign bodies detection result is by 3 displays in controlling and alarms.
The above; be only embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly belong to those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (4)
1. the foreign body detection system for airfield runway based on synthetic-aperture radar, it is characterized in that: comprise the mobile platform (1) be arranged near airfield runway, be fixed on the synthetic-aperture radar (2) on mobile platform (1), the control center (3) communicated to connect with synthetic-aperture radar (2), mobile platform (1) is driven by drive unit (11) and moves along airfield runway, drive unit (11) is connected with control center (3), described control center (3) is for sending radar motion control command to drive unit (11), drive unit (11) drives mobile platform (1) to move along runway according to radar motion control command, complete the scanning to airfield runway, to obtain high-resolution two dimension airfield runway SAR image, the high-resolution two dimension airfield runway SAR image of described control center (3) also for obtaining according to synthetic-aperture radar (2) scanning carries out runway foreign bodies detection.
2. as claimed in claim 1 based on the foreign body detection system for airfield runway of synthetic-aperture radar, it is characterized in that: described detection system also comprises the warning device (4) be connected with described control center (3), when described control center (3) detects runway foreign matter, described control center (3) controls described warning device (4) and carries out alert process.
3. as claimed in claim 1 based on the foreign body detection system for airfield runway of synthetic-aperture radar, it is characterized in that: described synthetic-aperture radar (2) comprise connect successively frequency synthesizer (21), launch subsystem (22), antenna feeder subsystem (23), HF receiving subsystem (24), signal transacting subsystem (25), communication subsystem (26), the signal output part of frequency synthesizer (21) is connected with the signal input part of transmitting subsystem (22) and HF receiving subsystem (24).
4. as claimed in claim 3 based on the foreign body detection system for airfield runway of synthetic-aperture radar, it is characterized in that: described signal transacting subsystem (25) comprises distance to focus module (251), orientation to focus module (252), the cache module (253) that is connected to focus module (251) and orientation to focus module (252) with distance;
Described distance for receiving the digital medium-frequency signal after described HF receiving subsystem (24) conversion, realizes distance to focusing process by pulse compression technique to focus module (251);
Described orientation to focus module (252) for the treatment of distance to the data focused on after process, first carry out motion compensation, then by matched filtering realize orientation to focusing, thus obtain the two-dimensional SAR image of high resolving power airfield runway;
Described cache module (253) is for storing distance to focus module (251) and orientation to the ephemeral data in focus module (252) processing procedure.
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| CN201520224580.2U CN204515166U (en) | 2015-04-15 | 2015-04-15 | A kind of foreign body detection system for airfield runway based on synthetic-aperture radar |
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| CN201520224580.2U CN204515166U (en) | 2015-04-15 | 2015-04-15 | A kind of foreign body detection system for airfield runway based on synthetic-aperture radar |
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Cited By (12)
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| CN105425317A (en) * | 2015-11-09 | 2016-03-23 | 河南平原光电有限公司 | Airport FOD detection positioning photoelectric platform |
| CN106814359A (en) * | 2016-12-09 | 2017-06-09 | 北京无线电计量测试研究所 | A kind of airfield runway foreign bodies detection radar signal preprocess method |
| WO2018000667A1 (en) * | 2016-06-30 | 2018-01-04 | 北京行易道科技有限公司 | Imaging radar, vehicle and imaging method |
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| CN108665446A (en) * | 2018-04-17 | 2018-10-16 | 上海工程技术大学 | A kind of foreign body detection system for airfield runway and method with radar |
| CN109188437A (en) * | 2018-09-29 | 2019-01-11 | 北京望远四象科技有限公司 | Airfield runway foreign matter detecting method and detection system |
| CN111538002A (en) * | 2020-04-07 | 2020-08-14 | 苏州理工雷科传感技术有限公司 | FOD detection method based on vehicle-mounted millimeter wave radar |
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| WO2018000667A1 (en) * | 2016-06-30 | 2018-01-04 | 北京行易道科技有限公司 | Imaging radar, vehicle and imaging method |
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| CN106814359A (en) * | 2016-12-09 | 2017-06-09 | 北京无线电计量测试研究所 | A kind of airfield runway foreign bodies detection radar signal preprocess method |
| CN106814359B (en) * | 2016-12-09 | 2019-06-04 | 北京无线电计量测试研究所 | A kind of airfield runway foreign bodies detection radar signal preprocess method |
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| CN108267734A (en) * | 2016-12-30 | 2018-07-10 | 北京行易道科技有限公司 | Radar |
| CN108267735A (en) * | 2016-12-30 | 2018-07-10 | 北京行易道科技有限公司 | Radar |
| CN108267737B (en) * | 2016-12-30 | 2024-03-22 | 北京行易道科技有限公司 | Radar |
| CN108267735B (en) * | 2016-12-30 | 2024-03-26 | 北京行易道科技有限公司 | Radar |
| CN108665446A (en) * | 2018-04-17 | 2018-10-16 | 上海工程技术大学 | A kind of foreign body detection system for airfield runway and method with radar |
| CN109188437A (en) * | 2018-09-29 | 2019-01-11 | 北京望远四象科技有限公司 | Airfield runway foreign matter detecting method and detection system |
| CN109188437B (en) * | 2018-09-29 | 2022-04-12 | 北京望远四象科技有限公司 | Method and system for detecting foreign matters on airfield runway |
| CN111538002A (en) * | 2020-04-07 | 2020-08-14 | 苏州理工雷科传感技术有限公司 | FOD detection method based on vehicle-mounted millimeter wave radar |
| CN113447926A (en) * | 2021-06-25 | 2021-09-28 | 北京航空航天大学 | Airport runway foreign matter detection method and system based on vehicle-mounted sliding rail SAR imaging |
| CN113447926B (en) * | 2021-06-25 | 2023-02-28 | 北京航空航天大学 | Method and system for detecting foreign matters on airfield runway based on vehicle-mounted sliding rail SAR imaging |
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