CN110068806A - A kind of short distance gapless coverage radar monitoring system of unattended station circumference security protection - Google Patents
A kind of short distance gapless coverage radar monitoring system of unattended station circumference security protection Download PDFInfo
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- CN110068806A CN110068806A CN201910487351.2A CN201910487351A CN110068806A CN 110068806 A CN110068806 A CN 110068806A CN 201910487351 A CN201910487351 A CN 201910487351A CN 110068806 A CN110068806 A CN 110068806A
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- radar
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- electromagnetic wave
- security protection
- short distance
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 18
- 238000012545 processing Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 239000011358 absorbing material Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 8
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 239000012780 transparent material Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Classifications
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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
- G01S7/28—Details of pulse systems
- G01S7/282—Transmitters
-
- 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
- G01S7/28—Details of pulse systems
- G01S7/285—Receivers
-
- 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
- G01S7/36—Means for anti-jamming, e.g. ECCM, i.e. electronic counter-counter measures
-
- 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
- G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
- G01S7/411—Identification of targets based on measurements of radar reflectivity
Abstract
The present invention relates to a kind of station perimeter security systems, more particularly to a kind of short distance gapless coverage radar monitoring system of unattended station circumference security protection, including radar cascade system (1) and radar data receives and processing system (2), is connected between radar cascade system (1) and radar data reception and processing system (2) by signal wire.The invention has the following advantages: 1, using the cascade method of multistage radar, allow the range of exposures of a radar to offset the blind area of another radar, and prevent the interference of reflection electromagnetic wave between radar by coating electromagnetic wave transparent material；2, two kinds of RF front-end circuits have been multiplexed in the radio-frequency front-end of radar, two kinds of RF front-end circuits can emit and receive the electromagnetic wave signal of different frequency, realize at the same to closely and distant object detection, solve the big disadvantage of traditional single radio frequency front-end circuit radar short-distance blind section.
Description
Technical field
The present invention relates to a kind of station perimeter security systems, and in particular to a kind of low coverage of unattended station circumference security protection
From gapless coverage radar monitoring system.
Background technique
With the development of monitoring technology, unattended station has been normalization, and station is to be related to power supply, gas supply mostly
Etc. national economy critical facility, preservation measures is highly important.
Unmanned station is on duty without sending someone, so monitoring system is needed to guarantee the safety of station.It all sets up many stations
In remote, the meagrely-populated area in geographical location, need to monitor swarming into for human or animal.After setting up monitoring system, once have outer
Monitored system identification is invaded in portion, and monitoring system will send alarm signal to user, to allow user at the first time
Know the generation of intrusion event.
There are many kinds, such as fence, the camera head monitor, infrared opposite-radiation, thunder of touching alarm for the monitoring system of station
Up to active monitoring etc..
Radar applies more, radar emission electromagnetic wave in station circumference security protection scene at present, then receives reflected electricity
Magnetic wave can detect whether invader.
But since there are natural short-distance blind sections for radar, lead to invader once invading the blind area of radar, radar is just
It can not continue to detect invader, the radar security system of final station is ineffective.This is radar application in station
One critical defect of circumference security protection.
Why there is natural blind area in radar, be because the radar electromagnetic wave of closer object reflection is issued with radar itself
The wave frequency of wave is not much different, and causes radar that can not judge the echo of closer object.When the electromagnetic wave of measured target is anti-
When being emitted back towards next, the carrier frequency of radar itself generates how many variations, after these echoes carry out difference frequency with carrier wave, frequency not yet
It is very low, it can be flooded by noise.
Summary of the invention
In view of the above-mentioned problems of the prior art, a kind of low coverage of unattended station circumference security protection proposed by the invention
From gapless coverage radar monitoring system, system solves the problem radar, there are short-distance blind sections, can not position in station security protection application
In blind area the problem of target.
A kind of short distance gapless coverage radar monitoring system of unattended station circumference security protection of the present invention, including radar
Cascade system 1 and radar data receive and processing system 2, radar cascade system 1 and radar data receive and processing system 2 it
Between pass through signal wire connect；The radar cascade system 1 include first order radar 11, second level radar 12 ..., N grades of radars
1N, first order radar 11, second level radar 12 ..., N grades of radar 1N mutually cascade, utilize the power range of previous stage radar
(effective range of radar detection) covers the short-distance blind section of rear stage radar；The first order radar 11, second level radar
12, before ..., in addition N grades of radar 1N are by increasing by one group of radio frequency on the basis of normal radar original one group of RF front-end circuit
Terminal circuit, respectively No.1 RF front-end circuit A, No. two RF front-end circuit B；
The No.1 RF front-end circuit A, No. two RF front-end circuit B are for solving the problems, such as radar short-distance blind section: one
Number RF front-end circuit A is for radar emission electromagnetic wave where controlling and receives the reflected electromagnetic wave of target, No. two radio frequencies
Front-end circuit B is for radar emission electromagnetic wave where controlling and receives the reflected electromagnetic wave of target；No.1 radio-frequency front-end electricity
Road A transmitting and received wave frequency are higher than No. two RF front-end circuit B transmittings and received wave frequency.In radar system
In system, the electromagnetic wave of high-frequency impulse is for detecting distant object, and the electromagnetic wave of low-frequency pulse is then used to detect closely
Target, radar cascade system 1 of the present invention be exactly by multiplexing No.1 RF front-end circuit A high frequency electromagnetic wave signal and
The low-frequency electromagnetic wave signal of No. two RF front-end circuit B realizes the detection of station security protection short distance non-blind area.
The No.1 RF front-end circuit A and No. two RF front-end circuit B is time-sharing work, during the work time, first
Emit and receive electromagnetic wave by No.1 RF front-end circuit A, detect distant object, at this time No. two RF front-end circuit B not work
Make；Emit and receive electromagnetic wave by No. two RF front-end circuit B again later, detects close-in target, at this time No.1 radio-frequency front-end
Circuit A does not work.Radar 20 frame signals of reception per second in work process receive a frame signal with No.1 RF front-end circuit A
Afterwards, next frame signal will use No. two RF front-end circuit B to receive, and toggle RF front-end circuit A and radio-frequency front-end electricity
Road B makes radar system while detecting close-in target and distant object.
The radar data receives and processing system 2 is computer, for handling radar signal, calculate measured target away from
From information (Graaf M W V D, Otten M P G, Huizing AG, et al.AMBER:An X-band FMCW such as, angles
digital beam forming synthetic aperture radar for a tactical UAV[J].2013.)。
Further, in the radar cascade system 1, distal end and the rear stage radar prestige of previous stage radar power range
The proximal part of power range is overlapped.
Further, since the antenna and radar mounting rod of composition 1 radar of radar cascade system use metal material
Production, the violent reflection electromagnetic wave of meeting, needs when in use at the antenna back side of rear stage radar and mounting rod towards previous stage
The direction Coated With Absorbing Material of radar shields influence of the reflection of electromagnetic wave to previous stage radar.
The invention has the following advantages:
1, using the cascade method of multistage radar, the range of exposures of a radar is allowed to offset the blind area of another radar, and
The interference of reflection electromagnetic wave between radar is prevented by coating electromagnetic wave transparent material；
2, two kinds of RF front-end circuits have been multiplexed in the radio-frequency front-end of radar, two kinds of RF front-end circuits can emit and connect
The electromagnetic wave signal for receiving different frequency is realized and traditional is individually penetrated to closely and the detection of distant object, solving simultaneously
The big disadvantage of frequency front-end circuit radar short-distance blind section.
Detailed description of the invention
Fig. 1 is the structure group of the short distance gapless coverage radar monitoring system of unattended station circumference security protection of the present invention
Cheng Tu.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
As shown in Figure 1, the short distance gapless coverage radar monitoring system of unattended station circumference security protection of the present invention, packet
It includes radar cascade system 1 and radar data receives and processing system 2, radar cascade system 1 and radar data are received and handled
It is connected between system 2 by signal wire；The radar cascade system 1 include first order radar 11, second level radar 12 ..., N
Grade radar 1N, first order radar 11, second level radar 12 ..., N grades of radar 1N mutually cascade, utilize the prestige of previous stage radar
Power range (effective range of radar detection) covers the short-distance blind section of rear stage radar；The first order radar 11, the second level
Radar 12 ..., N grades of radar 1N penetrate by addition increasing by one group on the basis of normal radar original one group of RF front-end circuit
Frequency front-end circuit, respectively No.1 RF front-end circuit A, No. two RF front-end circuit B.
The No.1 RF front-end circuit A, No. two RF front-end circuit B are for solving the problems, such as radar short-distance blind section: one
Number RF front-end circuit A emits electromagnetic wave for control radar 11 and receives the reflected electromagnetic wave of target, before No. two radio frequencies
Terminal circuit B emits electromagnetic wave for control radar 11 and receives the reflected electromagnetic wave of target；No.1 RF front-end circuit A hair
It penetrates and received wave frequency is higher than No. two RF front-end circuit B transmittings and received wave frequency.Work as in radar system
In, the electromagnetic wave of high-frequency impulse is for detecting distant object, and the electromagnetic wave of low-frequency pulse is then used to detect close-in target,
Radar cascade system 1 of the present invention is exactly the high frequency electromagnetic wave signal and No. two by multiplexing No.1 RF front-end circuit A
The low-frequency electromagnetic wave signal of RF front-end circuit B realizes the detection of station security protection short distance non-blind area.Remaining (N-1) organizes radar
Based on same principle.
The short distance non-blind area new radar system of circumference security protection in station of the present invention has been multiplexed following technology to realize
Short distance non-blind area is radar cascade, the multiplexing of different frequency RF front-end circuit respectively.
Radar cascade system 1 of the present invention applies the cascade mode of multistage radar, that is, previous stage radar is opposite
Rear stage radar illumination, and make the tail end of the power range of exposures of previous stage radar and the blind area of rear class radar power range of exposures
It overlaps, so the blind area of radar is just cancelled.
It, can be acute since the antenna and radar mounting rod of composition 1 radar of radar cascade system are made using metal material
Strong reflection electromagnetic wave needs the antenna back side of rear stage radar and mounting rod to apply towards the direction of previous stage radar when in use
Absorbing material is covered, influence of the reflection of electromagnetic wave to previous stage radar is shielded.
Since the radar of composition radar cascade system 1 has the design of dual RF front-end circuit, wherein emitting electromagnetic wave
Higher frequency is No.1 RF front-end circuit A, corresponding long-range detection, before emitting that wave frequency is lower and being No. two radio frequencies
Terminal circuit B, corresponding proximity detection.Wherein No.1 RF front-end circuit A and No. two RF front-end circuit B work at times, protect
Two RF front-end circuits have been demonstrate,proved to work together and be independent of each other.
Claims (5)
1. a kind of short distance gapless coverage radar monitoring system of unattended station circumference security protection, it is characterised in that: including radar
Cascade system (1) and radar data reception and processing system (2), radar cascade system (1) and radar data are received and are handled
It is connected between system (2) by signal wire；The radar cascade system (1) includes first order radar (11), second level radar
(12) ..., N grades of radars (1N), first order radar (11), second level radar (12) ..., N grades of radars (1N) mutually cascade,
Using the power range of previous stage radar, the short-distance blind section of rear stage radar is covered；The first order radar (11), the second level
Radar (12) ..., in addition N grades of radars (1N) are by increasing by one on the basis of normal radar original one group of RF front-end circuit
Group RF front-end circuit, respectively No.1 RF front-end circuit (A), No. two RF front-end circuits (B)；
The No.1 RF front-end circuit (A), No. two RF front-end circuits (B) are for solving the problems, such as radar short-distance blind section: one
Number RF front-end circuit (A) is for radar emission electromagnetic wave where controlling and receives the reflected electromagnetic wave of target, and No. two are penetrated
Frequency front-end circuit (B) is for radar emission electromagnetic wave where controlling and receives the reflected electromagnetic wave of target；Before No.1 radio frequency
Terminal circuit (A) transmitting and received wave frequency are higher than No. two RF front-end circuit (B) transmittings and received wave frequency；
The radar data receives and processing system (2) is computer, for handling radar signal, calculate measured target away from
From, angle information.
2. a kind of short distance gapless coverage radar monitoring system of station circumference security protection unattended according to claim 1,
Be characterized in that: the No.1 RF front-end circuit (A) and No. two RF front-end circuits (B) are time-sharing works, in the course of work
In, first emit and receive electromagnetic wave by No.1 RF front-end circuit (A), detects distant object, at this time No. two radio-frequency front-end electricity
(B) does not work on road；Emit and receive electromagnetic wave by No. two RF front-end circuits (B) again later, detects close-in target, at this time one
Number RF front-end circuit (A) does not work.
3. a kind of short distance gapless coverage radar monitoring system of station circumference security protection unattended according to claim 2,
Be characterized in that: radar 20 frame signals of reception per second in work process receive a frame signal with No.1 RF front-end circuit (A)
Afterwards, next frame signal will use No. two RF front-end circuits (B) to receive, before toggling RF front-end circuit (A) and radio frequency
Terminal circuit (B), makes radar system while detecting close-in target and distant object.
4. a kind of short distance gapless coverage radar monitoring system of station circumference security protection unattended according to claim 1,
It is characterized in that: in the radar cascade system (1), distal end and the rear stage radar power range of previous stage radar power range
Proximal part overlapping.
5. a kind of supervise to the short distance gapless coverage radar of unattended station circumference security protection described in 4 any bars according to claim 1
Control system, it is characterised in that: when in use in the side of the antenna back side and mounting rod towards previous stage radar of rear stage radar
To Coated With Absorbing Material, influence of the reflection of electromagnetic wave to previous stage radar is shielded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910487351.2A CN110068806A (en) | 2019-06-05 | 2019-06-05 | A kind of short distance gapless coverage radar monitoring system of unattended station circumference security protection |
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| CN201910487351.2A CN110068806A (en) | 2019-06-05 | 2019-06-05 | A kind of short distance gapless coverage radar monitoring system of unattended station circumference security protection |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111562573A (en) * | 2020-05-21 | 2020-08-21 | 山东师范大学 | Ultra-low altitude defense radar detection system and method |
| WO2021087706A1 (en) * | 2019-11-04 | 2021-05-14 | 深圳市大疆创新科技有限公司 | Radar system, movable platform and radar system control method |
| CN113240930A (en) * | 2020-10-16 | 2021-08-10 | 重庆交通大学 | Self-resetting method of parking space detection device |
| CN113567987A (en) * | 2021-04-30 | 2021-10-29 | 华为技术有限公司 | Radar system and terminal equipment |
| US11686841B2 (en) | 2021-04-30 | 2023-06-27 | Huawei Technologies Co., Ltd. | Radar system and terminal device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160018511A1 (en) * | 2014-07-17 | 2016-01-21 | Texas Instruments Incorporated | Distributed Radar Signal Processing in a Radar System |
| CN105572664A (en) * | 2015-12-31 | 2016-05-11 | 上海广电通信技术有限公司 | Networking navigation radar target tracking system based on data fusion |
| CN106530836A (en) * | 2016-11-22 | 2017-03-22 | 上海神添实业有限公司 | VTS (Virtual Terminal Service) system based on distributed radars |
| CN107238833A (en) * | 2016-03-29 | 2017-10-10 | 西安思丹德信息技术有限公司 | A kind of oil field security-protecting and monitoring method based on radar detection |
| CN108333563A (en) * | 2017-01-20 | 2018-07-27 | 北京行易道科技有限公司 | Radar and the vehicles |
| CN109444819A (en) * | 2018-11-29 | 2019-03-08 | 加特兰微电子科技(上海)有限公司 | Radar system and its control method |
-
2019
- 2019-06-05 CN CN201910487351.2A patent/CN110068806A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160018511A1 (en) * | 2014-07-17 | 2016-01-21 | Texas Instruments Incorporated | Distributed Radar Signal Processing in a Radar System |
| CN105572664A (en) * | 2015-12-31 | 2016-05-11 | 上海广电通信技术有限公司 | Networking navigation radar target tracking system based on data fusion |
| CN107238833A (en) * | 2016-03-29 | 2017-10-10 | 西安思丹德信息技术有限公司 | A kind of oil field security-protecting and monitoring method based on radar detection |
| CN106530836A (en) * | 2016-11-22 | 2017-03-22 | 上海神添实业有限公司 | VTS (Virtual Terminal Service) system based on distributed radars |
| CN108333563A (en) * | 2017-01-20 | 2018-07-27 | 北京行易道科技有限公司 | Radar and the vehicles |
| CN109444819A (en) * | 2018-11-29 | 2019-03-08 | 加特兰微电子科技(上海)有限公司 | Radar system and its control method |
Non-Patent Citations (1)
| Title |
|---|
| 军桥网，: ""雷达周界报警系统"", 《军桥网-军事信息化装备网 (81IT.COM), HTTP://WWW.81IT.COM/2017/1023/8177.HTML》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021087706A1 (en) * | 2019-11-04 | 2021-05-14 | 深圳市大疆创新科技有限公司 | Radar system, movable platform and radar system control method |
| CN111562573A (en) * | 2020-05-21 | 2020-08-21 | 山东师范大学 | Ultra-low altitude defense radar detection system and method |
| CN113240930A (en) * | 2020-10-16 | 2021-08-10 | 重庆交通大学 | Self-resetting method of parking space detection device |
| CN113240930B (en) * | 2020-10-16 | 2023-03-31 | 重庆交通大学 | Self-resetting method of parking space detection device |
| CN113567987A (en) * | 2021-04-30 | 2021-10-29 | 华为技术有限公司 | Radar system and terminal equipment |
| WO2022227301A1 (en) * | 2021-04-30 | 2022-11-03 | 华为技术有限公司 | Radar system and terminal device |
| US11686841B2 (en) | 2021-04-30 | 2023-06-27 | Huawei Technologies Co., Ltd. | Radar system and terminal device |
| CN113567987B (en) * | 2021-04-30 | 2023-07-28 | 华为技术有限公司 | Radar system and terminal equipment |
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Application publication date: 20190730 |