CN207586425U - A kind of light high reliability low latitude unmanned plane early warning detection radar system - Google Patents
A kind of light high reliability low latitude unmanned plane early warning detection radar system Download PDFInfo
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- CN207586425U CN207586425U CN201721344856.6U CN201721344856U CN207586425U CN 207586425 U CN207586425 U CN 207586425U CN 201721344856 U CN201721344856 U CN 201721344856U CN 207586425 U CN207586425 U CN 207586425U
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Abstract
The utility model is related to Radar Technology fields, a kind of light high reliability low latitude unmanned plane early warning detection radar system is specifically disclosed, including antenna, circulator, Transmit-Receive Unit, coupler, signal processing unit, data processing unit, display terminal, servo mechanism；The Transmit-Receive Unit includes phaselocked loop (PLL), Direct Digital Synthesizer (DDS), transmission channel, reception/frequency conversion channel；The data processing unit is connect by communication interface with servo mechanism.The utility model has the advantages that using X-band sensorcraft so as to fulfill high reliability at a distance, it is very small can clearly to detect movement velocity, it might even be possible to which hover static commercial unmanned plane；It is easy to implement by the way of storage battery power supply due to low in energy consumption.
Description
Technical field
The utility model is related to Radar Technology fields, particularly relate to a kind of light high reliability low latitude unmanned plane early warning detection
Radar system.
Background technology
Foundation《Civil Aviation Law of the People's Republic of China》, standardized operation and safety of the China for unmanned plane application field
Management is successively promulgated《Civilian push-button aircraft system driver management temporary provisions》、《General Aviation Flight control item
Example》、《Low altitude airspace uses administrative provisions (tentative)》, but unmanned plane market management at present and lack of standardization, unmanned plane operator
Still there are idea of leaving things to chance, security incident is still continuous.The maintenance of aviation safety and the execution of structure of the law, need corresponding skill
Art measure is realized.
Global unmanned plane about sells 58.7 ten thousand framves within 2015, and wherein military unmanned air vehicle accounts for about 3%, and civilian unmanned plane accounts for
97%.In civilian unmanned plane sales volume, professional about 17.1 ten thousand frame of unmanned plane sales volume, about 39.9 ten thousand frame of consumer level unmanned plane sales volume.
With the expansion of consumer level unmanned plane application scale, the focus incident for the safety problem that unmanned plane is brought, low altitude airspace chain of command
Face new challenge.
Existing low latitude unmanned plane early warning radar is primarily present following technical problem：
1. the operating distance of airport unmanned plane early warning demand can be realized far in 0.5~20km, the airport radar of PD systems
Apart from aircraft monitors, but there are short-distance blind sections；
2. the radar reflection of unmanned plane target is minimum, the movement characteristic of commercialization unmanned plane is very special at present, movement velocity
It is very small, it might even be possible to hover static, current airport radar is mainly detected by the Doppler frequency shift of target velocity generation
It is invalid to static target with identification target.
Utility model content
The purpose of this utility model is to provide a kind of light high reliability low latitude unmanned plane early warning detection radar system, gently
Just；Smaller than Ku wave bands cloud, rain, mist medium cloud attenuation by fog using X-band sensorcraft, operating distance is big, and false alarm rate is low, so as to
Realize high reliability with it is remote；It is very small movement velocity can clearly to be detected, it might even be possible to which hover static commercial unmanned plane；
Height uses electric scanning using electric scanning, orientation, realizes low cost；Due to low in energy consumption, by the way of storage battery power supply, embodiment party
Just.
To achieve these goals, the utility model employs following technical solution：A kind of light high reliability low latitude
Unmanned plane early warning detection radar system, including antenna, circulator, Transmit-Receive Unit, coupler, signal processing unit, data processing
Unit, display terminal, servo mechanism；
The Transmit-Receive Unit include phaselocked loop (PLL), Direct Digital Synthesizer (DDS), transmission channel, reception/
Frequency conversion channel；
DDS generates the reference frequency source for exporting small stairstep signal as phaselocked loop, by PLL by the frequency frequency multiplication of generation to institute
The frequency range needed, after transmission channel, by the way that circulator output is linear or nonlinear pulse or FMCW signal are to antenna,
Antenna received signal is sent to reception/frequency conversion channel by circulator, after reception/frequency conversion channel processing, with beat
Intermediate-freuqncy signal exports；
Beat intermediate-freuqncy signal through signal processing unit processes, after slip ring, is handled therewith through data processing unit, knot
Fruit is sent out by communication interface, the display target flight path on display terminal, forms track data；
The data processing unit is connect by communication interface with servo mechanism.
Wherein, the transmission channel includes upconverter, frequency multiplier, power splitter, power amplifier (PA) successively.
Wherein, the reception/frequency conversion channel includes low-noise amplifier (LNA), frequency mixer, intermediate frequency amplifier successively
(IFA)。
Wherein, the servo mechanism includes servo controller, bearing servo machine, and servo controller control is watched with driving orientation
Machine rotation is taken, bearing servo machine drives antenna rotation, and the azimuth of antenna is fed back to data processing unit by bearing servo machine again,
Data processing unit sends object matching rotation instruction to servo controller.
Wherein, multiple auxiliary antennas that the antenna includes primary antenna, arranged together with the primary antenna, it is vertical to be formed
Array.
The beneficial effects of the utility model are：1. can to the low latitude in emphasis cloth defence area domain, extreme low-altitude small objects into
The azran speed and elevation information of the automatic admission target of row all direction searching detection, 2. can to the target that hovering is forbidden into
The effective detection of row；3. without short-distance blind section；4. and pass through strapdown data analysis and obtain targetpath, formation track data；
5. accomplish that effective management and control RCS is small, threaten the targets such as distance is near, movement velocity is extremely low.
Description of the drawings
In order to illustrate more clearly of the utility model embodiment technical solution, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model in order to more clearly
Illustrate the utility model embodiment or technical solution of the prior art, it below will be to required in embodiment or description of the prior art
Attached drawing to be used is briefly described, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the system principle diagram of the utility model；
Fig. 2 is the Transmit-Receive Unit functional block diagram of the utility model；
Fig. 3 is the signal processing unit functional block diagram of the utility model；
Fig. 4 is the servo mechanism block diagram of the utility model.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without creative efforts
All other embodiments obtained shall fall within the protection scope of the present invention.
A kind of light high reliability low latitude unmanned plane early warning detection radar system as shown in Figure 1, including antenna, annular
Device, Transmit-Receive Unit, coupler, signal processing unit, data processing unit, display terminal, servo mechanism；
DDS generates the reference frequency source for exporting small stairstep signal as phaselocked loop, by PLL by the frequency frequency multiplication of generation to institute
The frequency range needed, after transmission channel, by the way that circulator output is linear or nonlinear pulse or FMCW signal are to antenna,
Antenna received signal is sent to reception/frequency conversion channel by circulator, after reception/frequency conversion channel processing, with beat
Intermediate-freuqncy signal exports；
Beat intermediate-freuqncy signal through signal processing unit processes, after slip ring, is handled therewith through data processing unit, knot
Fruit is sent out by communication interface, the display target flight path on display terminal, forms track data；
The data processing unit is connect by communication interface with servo mechanism.
As shown in Fig. 2, the Transmit-Receive Unit includes phaselocked loop (PLL), Direct Digital Synthesizer (DDS), transmitting
Channel, reception/frequency conversion channel；The transmission channel includes upconverter, frequency multiplier, power splitter, power amplifier (PA) successively；
Reception/the frequency conversion channel includes low-noise amplifier (LNA), frequency mixer, intermediate frequency amplifier (IFA) successively.
DDS technologies have the advantages that frequency resolution is high, and frequency agility speed is fast, frequency conversion Phase Continuation, but bandwidth and miscellaneous
Wave inhibits poor, and PLL frequency synthesis techniques have many advantages, such as that broadband, high-frequency, Frequency spectrum quality are good, stronger to spurious reduction,
But its frequency agility speed is slower.So in some signal fast switching speed, bandwidth, the circuit of the opposite compromise of Frequency spectrum quality requirement
In, will be a kind of spuious ideal solutions of solution DDS with reference to the combination of PLL frequency synthesis techniques and DDS technologies.They
Function altogether is to generate stable, reliable, flexible, high-quality radar emission signal.
The work of frequency mixer is mainly by reception by amplifying the signal after post-processing, and by mixing, (multiplication+high pass is filtered
Wave) a fixed intermediate frequency signal is transformed into, it is then delivered to intermediate frequency amplifier and goes to amplify.The work of mixting circuit includes:It receives outer
Carry out high-frequency signal and selected and amplified；Local oscillator generates a high-frequency signal frequency constant-amplitude signal as launching；
Received extraneous signal and local oscillation signal are sent to together in mixer tube and are mixed, after being handled by high-pass filtering, is obtained
Beat Signal.
Effect of the slip ring in radar is to couple the rotating part of radar with fixed part, and transmits electricity and letter
Number etc..Further develop now with Radar Technology, data transmission higher and higher to the quality requirement of rotating part transmission data
Amount it is increasing, and the problems such as brush of traditional slip ring is easily worn, has been not suitable for the use of radar.The optical fiber newly developed
Slip ring can with simultaneous transmission analog signal and digital signal, and again have small, multichannel, it is non-maintaining the advantages that so that
The transmission process and transmission structure of radar are simplified.
As shown in figure 3, beat intermediate-freuqncy signal converts analog signals into number after analog-digital converter A/D conversions
Then signal carries out Fast Fourier Transform, by coherent accumulation, carrying out integrated pulse processing, so as to obtain target away from
From, information such as speed, orientation and pitching.
As shown in figure 4, the servo mechanism includes servo controller, bearing servo machine, servo controller control and driving
Bearing servo machine rotates, and bearing servo machine drives antenna rotation, and bearing servo machine feeds back to the azimuth of antenna at data again
Unit is managed, data processing unit sends object matching rotation instruction to servo controller.
Multiple auxiliary antennas that the antenna includes primary antenna, arranged together with the primary antenna, to form orthogonal array.
DDS technologies have the advantages that frequency resolution is high, and frequency agility speed is fast, frequency conversion Phase Continuation, but bandwidth and miscellaneous
Wave inhibits poor, and PLL frequency synthesis techniques have many advantages, such as that broadband, high-frequency, Frequency spectrum quality are good, stronger to spurious reduction,
But its frequency agility speed is slower.So in some signal fast switching speed, bandwidth, the circuit of the opposite compromise of Frequency spectrum quality requirement
In, will be a kind of spuious ideal solutions of solution DDS with reference to the combination of PLL frequency synthesis techniques and DDS technologies.
When radar works, radar is positioned using GPS and time service, and the information such as time, longitude and latitude, height above sea level are automatic
It is input in radar terminal, can target information be transmitted to by display ＆ control system by network interface, serial ports or is directly transferred to commander's control
Center processed is shown in airport aviation management command centre generalized information system.
When radar works, monitored in real time, and in time by shape using the state inside BITE realization radar systems and performance
State information is sent to terminal and shows.
Target range, tachometric survey estimate that target bearing is estimated by sliding window amplitude weighting by adjacent cells amplitude weighting
It calculates.
Low latitude unmanned plane early warning detection radar can carry out full side to the low latitude in emphasis cloth defence area domain, extreme low-altitude small objects
The azran speed and elevation information of target are enrolled in position reconnaissance probe automatically, and are passed through strapdown data analysis and obtained target boat
Mark forms track data, then air threat priority is analyzed, and provides counter early warning and reported with threatening.
Radar Technology index
1. frequency：X-band, 9.6GHz~10.3GHz
Smaller than Ku wave bands cloud, rain, mist medium cloud attenuation by fog using X-band sensorcraft, operating distance is big, and false alarm rate is low,
So as to fulfill high reliability and at a distance；The very small target of movement velocity can clearly be detected, it might even be possible to detect
Hover static commercial unmanned plane.
2. peak power：5W
It is easy to implement by the way of storage battery power supply due to low in energy consumption.
3. swept bandwidth：Less than or equal to 75MHz
4. frequency sweep repetition rate：200Hz
5. frequency sweep time width：2ms
6. receiver noise factor：Less than or equal to 6dB
7. antenna beam rotating speed
Azimuth：5~15rpm, +/- 10%；Pitch angle：Electronics scans, 60 °/s
8. transmit/receive antenna horizontal beam width：2 ° (3dB width)
9. transmit/receive antennas orthogonal beam angle：4 ° (3dB width)
10. antenna gain：Antenna gain >=30dBi
11. transmit/receive antenna sidelobe level：Less than or equal to -14dB (in positive and negative 10 °)
12. polarization mode：Vertical polarization or circular polarisation
13. communication protocol：10M Ethernets or serial ports, RS-485 serial ports (rate 19200bps)
14. weight≤25kg, light.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (5)
1. a kind of light high reliability low latitude unmanned plane early warning detection radar system, it is characterised in that：Including antenna, circulator,
Transmit-Receive Unit, coupler, signal processing unit, data processing unit, display terminal, servo mechanism；
The Transmit-Receive Unit includes phaselocked loop (PLL), Direct Digital Synthesizer (DDS), transmission channel, reception/frequency conversion
Channel；
Direct Digital Synthesizer (DDS) generates the reference frequency source for exporting small stairstep signal as phaselocked loop, by lock phase
Ring (PLL) is by the frequency frequency multiplication of generation to required frequency range, after transmission channel, by circulator output it is linear or
To antenna, antenna received signal is sent to reception/frequency conversion channel by circulator for nonlinear pulse or FMCW signal, passes through
After reception/frequency conversion channel processing, exported with beat intermediate-freuqncy signal；
Beat intermediate-freuqncy signal through signal processing unit processes, after slip ring, handles through data processing unit therewith, result is led to
Communication interface submitting is crossed, the display target flight path on display terminal forms track data；
The data processing unit is connect by communication interface with servo mechanism.
2. a kind of light high reliability low latitude unmanned plane early warning detection radar system according to claim 1, feature exist
In：The transmission channel includes upconverter, frequency multiplier, power splitter, power amplifier (PA) successively.
3. a kind of light high reliability low latitude unmanned plane early warning detection radar system according to claim 1, feature exist
In：Reception/the frequency conversion channel includes low-noise amplifier (LNA), frequency mixer, intermediate frequency amplifier (IFA) successively.
4. a kind of light high reliability low latitude unmanned plane early warning detection radar system according to claim 1, feature exist
In：The servo mechanism includes servo controller, bearing servo machine, and servo controller control is rotated with driving bearing servo machine,
Bearing servo machine drives antenna rotation, and the azimuth of antenna is fed back to data processing unit, data processing by bearing servo machine again
Unit sends object matching rotation instruction to servo controller.
5. a kind of light high reliability low latitude unmanned plane early warning detection radar system according to claim 1, feature exist
In：Multiple auxiliary antennas that the antenna includes primary antenna, arranged together with the primary antenna, to form orthogonal array.
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| CN201721344856.6U CN207586425U (en) | 2017-10-19 | 2017-10-19 | A kind of light high reliability low latitude unmanned plane early warning detection radar system |
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| CN201721344856.6U CN207586425U (en) | 2017-10-19 | 2017-10-19 | A kind of light high reliability low latitude unmanned plane early warning detection radar system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365585A (en) * | 2020-03-07 | 2020-07-03 | 深圳市安星数字系统有限公司 | Modularized precision radar rotary table |
| CN111398948A (en) * | 2020-04-08 | 2020-07-10 | 成都汇蓉国科微系统技术有限公司 | Maneuvering small target track association method under strong clutter background |
| WO2020215270A1 (en) * | 2019-04-25 | 2020-10-29 | 深圳市大疆创新科技有限公司 | Radar system, signal collection method for radar system, device, and storage medium |
| CN113258248A (en) * | 2021-06-04 | 2021-08-13 | 南京钢果电子科技有限公司 | Circularly polarized antenna |
| CN114730011A (en) * | 2020-11-06 | 2022-07-08 | 深圳市大疆创新科技有限公司 | Hovering method of aircraft, aircraft and storage medium |
-
2017
- 2017-10-19 CN CN201721344856.6U patent/CN207586425U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020215270A1 (en) * | 2019-04-25 | 2020-10-29 | 深圳市大疆创新科技有限公司 | Radar system, signal collection method for radar system, device, and storage medium |
| CN111365585A (en) * | 2020-03-07 | 2020-07-03 | 深圳市安星数字系统有限公司 | Modularized precision radar rotary table |
| CN111398948A (en) * | 2020-04-08 | 2020-07-10 | 成都汇蓉国科微系统技术有限公司 | Maneuvering small target track association method under strong clutter background |
| CN111398948B (en) * | 2020-04-08 | 2021-12-10 | 成都汇蓉国科微系统技术有限公司 | Maneuvering small target track association method under strong clutter background |
| CN114730011A (en) * | 2020-11-06 | 2022-07-08 | 深圳市大疆创新科技有限公司 | Hovering method of aircraft, aircraft and storage medium |
| CN113258248A (en) * | 2021-06-04 | 2021-08-13 | 南京钢果电子科技有限公司 | Circularly polarized antenna |
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Effective date of registration: 20180827 Address after: 710000 10302, 1 modern industrial center, east industrial plant 1, No. 2 zhang85 Road, Xi'an new high tech Zone, Shaanxi Patentee after: Xi'an Science and Technology Electronic Technology Co., Ltd. Address before: 710000 thirty-one Xianning West Road, Beilin District, Xi'an, Shaanxi Patentee before: Yang Rui |