CN112731368A - Near-space small target radar monitoring system - Google Patents
Near-space small target radar monitoring system Download PDFInfo
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- CN112731368A CN112731368A CN202011558698.0A CN202011558698A CN112731368A CN 112731368 A CN112731368 A CN 112731368A CN 202011558698 A CN202011558698 A CN 202011558698A CN 112731368 A CN112731368 A CN 112731368A
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- 238000012544 monitoring process Methods 0.000 title abstract description 9
- 238000012545 processing Methods 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 230000005284 excitation Effects 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 6
- 230000003993 interaction Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000001846 repelling effect Effects 0.000 abstract description 4
- 241000271566 Aves Species 0.000 description 11
- 241001465754 Metazoa Species 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/50—Systems of measurement based on relative movement of target
- G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
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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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
-
- 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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/66—Radar-tracking systems; Analogous systems
- G01S13/72—Radar-tracking systems; Analogous systems for two-dimensional tracking, e.g. combination of angle and range tracking, track-while-scan radar
-
- 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
- G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
-
- 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
- G01S7/04—Display arrangements
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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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S2013/0236—Special technical features
- G01S2013/0245—Radar with phased array antenna
- G01S2013/0254—Active array antenna
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention relates to a near-space small target radar monitoring system which comprises a power supply module and a position rotary table module, wherein the power supply module is electrically connected with an antenna module, a channel module, a signal processing module and a display control module, the power supply module supplies power to the whole radar system, the position rotary table module is provided with a position rotary table, the antenna module, the channel module and the signal processing module are all arranged on the position rotary table, the position rotary table is connected with a servo motor, and the servo motor drives the position rotary table to rotate and transmits position information to the display control module in real time. Under the cooperation of all the modules, the bird detector can accurately detect birds in places such as airports, farms, transformer substations and the like, and the one-dimensional active phased array antenna has the advantages of long detection distance, large pitching angle and wide coverage range and can effectively detect and position the birds in real time; through signal processing and conversion of each module piece, a detection target is accurately positioned, a movement trace is analyzed, and bird repelling work is effectively expanded.
Description
Technical Field
The invention relates to a near-space small target radar monitoring system, and belongs to the technical field of radar bird detection.
Background
Bird repelling is an important task in places such as airports, farms, substations and the like. In the case of airports, collisions with flying animals such as birds often occur during the taking off and landing of aircrafts, which results in great loss of lives and property. In order to prevent potential safety hazards caused by flying animals such as birds in places such as airports, farms or transformer substations, workers often drive birds. In order to thoroughly drive the birds, the positions of the birds should be accurately detected before the birds are driven, and real-time fixed-point and positioning driving is carried out, so that the position of the birds is accurately detected in advance and is extremely important.
Disclosure of Invention
In order to solve the technical problem, the invention provides a near-space small target radar monitoring system, which has the following specific technical scheme:
the near-space small target radar monitoring system comprises a power supply module and an azimuth turntable module, wherein the power supply module is electrically connected with an antenna module, a channel module, a signal processing module and a display control module, the antenna module, the channel module and the signal processing module are arranged on the azimuth turntable module,
the channel module consists of a frequency synthesizer and a receiver, an excitation signal generated by the frequency synthesizer is sent to the antenna module through the feed network, an echo signal formed after the excitation signal detects a target is received by the antenna module and forms a sum beam and a difference beam through the feed network, the sum beam and the difference beam are converted into an intermediate frequency signal through the receiver and then sent to the signal processing module,
the antenna module radiates the excitation signal outwards through the array antenna, the radiated excitation signal forms an echo signal after detecting a target and is received by the array antenna,
the signal processing module comprises a signal processor and a communication controller, the signal processor collects intermediate frequency signals with different elevation angles input by the channel module and carries out distance detection, angle detection and track tracking on a detected target according to the received intermediate frequency signals, the signal processor sends target information after detection processing to the display control module through the communication controller,
the display control module is provided with a human-computer interaction interface, displays target information and issues a task of expelling the detection target by running upper computer software.
Furthermore, the array antenna is a one-dimensional active phased array antenna, the one-dimensional active phased array antenna is provided with 128 antenna units, and the 128 antenna units form an antenna array face.
Furthermore, the signal processing module is provided with a timing control module, and the timing control module performs timing control on the echo signal acquisition and the radar system.
Further, the signal processor is connected with an analog-digital converter, the intermediate frequency signal input by the channel module is converted into a digital signal through the analog-digital converter, and the signal processor receives the converted digital signal and performs azimuth and track processing on the detection target.
Furthermore, the azimuth turntable module is provided with an azimuth turntable, the antenna module, the channel module and the signal processing module are all arranged on the azimuth turntable, the azimuth turntable is connected with a servo motor, and the servo motor drives the azimuth turntable to rotate and transmits azimuth information to the display control module in real time.
Further, the model of the frequency synthesizer is SLMF 315.
Further, the analog-to-digital converter has a model number MAX 19542.
The invention has the beneficial effects that:
under the cooperation of all the modules, the bird detector can accurately detect birds in places such as airports, farms, transformer substations and the like, and the one-dimensional active phased array antenna has the advantages of long detection distance, large pitching angle and wide coverage range and can effectively detect and position the birds in real time; through signal processing and conversion of each module piece, a detection target is accurately positioned, a movement trace is analyzed, and bird repelling work is effectively expanded.
Drawings
Figure 1 is a schematic view of the present invention,
fig. 2 is a block diagram of a one-dimensional active phased array antenna structure of the present invention.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1, the near-space small-target radar monitoring system of the present invention includes a power module and a position turntable module, wherein the power module is electrically connected with an antenna module, a channel module, a signal processing module and a display control module, the power module supplies power to the whole radar system by adopting a 220V alternating current power supply mode, and the 220V power supply supplies power to each module after performing secondary voltage conversion; the azimuth turntable module is provided with an azimuth turntable, the antenna module, the channel module and the signal processing module are all arranged on the azimuth turntable, the azimuth turntable is connected with a servo motor, and the servo motor drives the azimuth turntable to rotate and transmits azimuth information to the display control module in real time. The channel module is composed of a frequency synthesizer and a receiver, an excitation signal generated by the frequency synthesizer is sent to the antenna module through the feed network, the antenna module radiates the excitation signal outwards through the one-dimensional active phased array antenna, and the radiated excitation signal forms an echo signal after detecting a target and is received again by the one-dimensional active phased array antenna. The antenna array surface of the one-dimensional active phased-array antenna adopts a narrow-edge slot array mode, the slot array mode is formed by 128 slots, the slot unit interval is 12mm, the rear surface of the antenna is formed by 128 TR channels, 16 module waveguides output sum and difference signals after waveguide synthesis and sum and difference networks, and the sum and difference signals are output as shown in figure 2. The working frequency of the one-dimensional active phased-array antenna is 16 GHz-18 GHz, the antenna gain is not less than 28dB, the effective omnidirectional radiation power is not less than 72dBm, the ratio of the receiving antenna gain G to the noise temperature T of a receiving system is not less than 7dB/K, the azimuth beam width is not more than 5 degrees, the pitch beam width is not more than 7 degrees, the beam scanning range is not less than +/-60 degrees, the side lobe level is not more than-18 dB, and the polarization form of the antenna is vertical polarization. Therefore, the one-dimensional active phased array antenna can realize the detection distance of 6km, the azimuth coverage of 360 degrees and the pitch angle coverage of 0-50 degrees, the distance detection precision is 10m, the angle detection precision is 1 degree, and the minimum detectable target moving speed is 2 m/s. The echo signals are formed into sum and difference beams through the feed network, and the sum and difference beams are transmitted to the signal processing module after being subjected to frequency conversion to intermediate frequency signals through the receiver. The signal processing module comprises a signal processor and a communication controller, the signal processor is connected with an analog-digital converter, intermediate frequency signals with different elevation angles input by the channel module are converted into digital signals through the analog-digital converter, the signal processor receives the converted digital signals and carries out distance detection, angle detection and track tracking on a detection target, and the signal processor sends target information after detection processing to the display control module through the communication controller. The signal processor is mainly used for detecting moving targets under various clutter backgrounds in low altitude, providing characteristics of the moving targets, including fuzzy distance, direction, fuzzy speed, strength and other information of the targets, and enabling other parts of a subsequent radar to perform target distance deblurring, speed deblurring, data processing and the like to form target tracks and classification. The display control module is provided with a human-computer interaction interface, displays target information by running upper computer software, and issues a task of expelling a detection target by a worker on the human-computer interaction interface, and also has the functions of system parameter setting, DSP program loading, data uploading, intermediate processing result display, system running state monitoring and the like.
The near-space small target radar monitoring system is divided into a normal working mode, a system calibration mode and a full receiving mode. Under a normal working mode, the one-dimensional active phased array antenna realizes 360-degree rotation under the rotation of the azimuth turntable, a TWS mode, namely a mode of scanning and tracking simultaneously, is adopted to search and track bird targets in an airspace, and the target azimuth and the target track are displayed on the display control module. In a system calibration mode, a radio frequency system of the antenna module transmits a transmitting signal to a receiving system through a calibration channel to perform self-closed loop test, and performs self-check and correction on state parameters of the system. And under the full receiving mode, the signal generating module does not output an excitation signal, so that the calibration of the receiving thermal noise power level of the radar system is completed. After the radar equipment is installed, horizontal adjustment of an antenna array surface is completed firstly, after the horizontal adjustment is completed, the radar system is electrified to carry out system initialization, and the display control module completes operations such as program loading and system state self-checking by running upper computer software. After the radar system is initialized, the radar system enters a waiting mode, and at the moment, an operator issues instruction parameters through a human-computer interaction interface. Each module of the radar system enters a working state after receiving the instruction parameters, the one-dimensional active phased array antenna is rotated to search, intercept, track and upload target information, and after an operator issues a stop instruction, the radar system returns to a standby mode to wait for instruction issuing or power off.
Under the cooperation of all the modules, the bird detector can accurately detect birds in places such as airports, farms, transformer substations and the like, and the one-dimensional active phased array antenna has the advantages of long detection distance, large pitching angle and wide coverage range and can effectively detect and position the birds in real time; through signal processing and conversion of each module piece, a detection target is accurately positioned, a movement trace is analyzed, and bird repelling work is effectively expanded.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. A near-space small target radar surveillance system, characterized by: comprises a power supply module and an azimuth turntable module, wherein the power supply module is electrically connected with an antenna module, a channel module, a signal processing module and a display control module, the antenna module, the channel module and the signal processing module are arranged on the azimuth turntable module,
the channel module consists of a frequency synthesizer and a receiver, an excitation signal generated by the frequency synthesizer is sent to the antenna module through the feed network, an echo signal formed after the excitation signal detects a target is received by the antenna module and forms a sum beam and a difference beam through the feed network, the sum beam and the difference beam are converted into an intermediate frequency signal through the receiver and then sent to the signal processing module,
the antenna module radiates the excitation signal outwards through the array antenna, the radiated excitation signal forms an echo signal after detecting a target and is received by the array antenna,
the signal processing module comprises a signal processor and a communication controller, the signal processor collects intermediate frequency signals with different elevation angles input by the channel module and carries out distance detection, angle detection and track tracking on a detected target according to the received intermediate frequency signals, the signal processor sends target information after detection processing to the display control module through the communication controller,
the display control module is provided with a human-computer interaction interface, displays target information and issues a task of expelling the detection target by running upper computer software.
2. The near-space small target radar surveillance system of claim 1, wherein: the array antenna is a one-dimensional active phased array antenna, the one-dimensional active phased array antenna is provided with 128 antenna units, and the 128 antenna units form an antenna array face.
3. The near-space small target radar surveillance system of claim 1, wherein: the signal processing module is provided with a timing control module which carries out timing control on the echo signal acquisition and the radar system.
4. The near-space small target radar surveillance system of claim 1, wherein: the signal processor is connected with an analog-digital converter, the intermediate frequency signal input by the channel module is converted into a digital signal through the analog-digital converter, and the signal processor receives the converted digital signal and performs azimuth and track processing on a detection target.
5. The near-space small target radar surveillance system of claim 1, wherein: the azimuth turntable module is provided with an azimuth turntable, the antenna module, the channel module and the signal processing module are all arranged on the azimuth turntable, the azimuth turntable is connected with a servo motor, and the servo motor drives the azimuth turntable to rotate and transmits azimuth information to the display control module in real time.
6. The near-space small target radar surveillance system of claim 1, wherein: the model of the frequency synthesizer is SLMF 315.
7. The near-space small target radar surveillance system of claim 4, wherein: the analog to digital converter is of type MAX 19542.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011558698.0A CN112731368A (en) | 2020-12-25 | 2020-12-25 | Near-space small target radar monitoring system |
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| CN202011558698.0A CN112731368A (en) | 2020-12-25 | 2020-12-25 | Near-space small target radar monitoring system |
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| CN202011558698.0A Pending CN112731368A (en) | 2020-12-25 | 2020-12-25 | Near-space small target radar monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113505673A (en) * | 2021-06-30 | 2021-10-15 | 扬州明晟新能源科技有限公司 | Glass carrying track identification method |
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| JP2007178332A (en) * | 2005-12-28 | 2007-07-12 | Nec Corp | Phased-array radar system |
| CN102788973A (en) * | 2011-05-17 | 2012-11-21 | 株式会社电装 | Radar device, calibration system and calibration method |
| CN105572670A (en) * | 2015-12-11 | 2016-05-11 | 无锡市雷华科技有限公司 | Flying bird detection radar system |
| CN106597433A (en) * | 2016-12-30 | 2017-04-26 | 无锡市雷华科技有限公司 | Low-altitude monitoring radar |
| CN108051813A (en) * | 2017-12-04 | 2018-05-18 | 湖南华诺星空电子技术有限公司 | For the radar-probing system and method for low latitude multiple target Classification and Identification |
| CN108196233A (en) * | 2017-12-26 | 2018-06-22 | 北京无线电测量研究所 | A kind of real-time online Calibration Method based on millimeter wave cloud detection radar |
-
2020
- 2020-12-25 CN CN202011558698.0A patent/CN112731368A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007178332A (en) * | 2005-12-28 | 2007-07-12 | Nec Corp | Phased-array radar system |
| CN102788973A (en) * | 2011-05-17 | 2012-11-21 | 株式会社电装 | Radar device, calibration system and calibration method |
| CN105572670A (en) * | 2015-12-11 | 2016-05-11 | 无锡市雷华科技有限公司 | Flying bird detection radar system |
| CN106597433A (en) * | 2016-12-30 | 2017-04-26 | 无锡市雷华科技有限公司 | Low-altitude monitoring radar |
| CN108051813A (en) * | 2017-12-04 | 2018-05-18 | 湖南华诺星空电子技术有限公司 | For the radar-probing system and method for low latitude multiple target Classification and Identification |
| CN108196233A (en) * | 2017-12-26 | 2018-06-22 | 北京无线电测量研究所 | A kind of real-time online Calibration Method based on millimeter wave cloud detection radar |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113505673A (en) * | 2021-06-30 | 2021-10-15 | 扬州明晟新能源科技有限公司 | Glass carrying track identification method |
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