CN106066477A - Aviation secondary radar and airborne vehicle identity identification system and discrimination method - Google Patents

Aviation secondary radar and airborne vehicle identity identification system and discrimination method Download PDF

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Publication number
CN106066477A
CN106066477A CN201610353396.7A CN201610353396A CN106066477A CN 106066477 A CN106066477 A CN 106066477A CN 201610353396 A CN201610353396 A CN 201610353396A CN 106066477 A CN106066477 A CN 106066477A
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Prior art keywords
radar
secondary radar
airborne vehicle
signal
aviation
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CN201610353396.7A
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CN106066477B (en
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邱云江
樊龙飞
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Sichuan Runze Jingwei Information Technology Co Ltd
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Sichuan Runze Jingwei Information Technology Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S13/00Systems 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
    • G01S13/74Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/78Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted discriminating between different kinds of targets, e.g. IFF-radar, i.e. identification of friend or foe

Abstract

The aviation secondary radar of the present invention and airborne vehicle identity identification system, including the signal receiving unit for receiving secondary radar and Aircraft Communication;Arithmetic element, for providing the data operation needed for system and generating control instruction;Secondary radar fingerprint base, for storing the communication attributes information between secondary radar and institute's pipe airborne vehicle.System of the present invention is by the collection of radar interrogator response time and contrast judgement, it is achieved the sign to radar identity, native system and method realize based on the relatively-stationary inquire/response time difference caused on radar and pattern, the most efficiently.

Description

Aviation secondary radar and airborne vehicle identity identification system and discrimination method
Technical field
The present invention relates to aviation secondary radar identification technique field, be specifically related to a kind of aviation secondary radar and airborne vehicle body Part identification system and discrimination method.
Background technology
Aviation/navigation management secondary radar (Secondary Surveillance Radar--SSR), also referred to as air traffic control radar letter Mark system (ATCRBS:Air Traffic Control Radar Beacon System).It is initially to make in air battle The identification of friend or foe that radar is told aircraft between ourselves and the enemy and developed, when ultimate principle and the parts of this system are passed through After development after the air traffic control of civil aviaton, just become secondary radar system.
Controller readily appreciate that from secondary radar aircraft numbering, highly, the parameter such as direction, make radar by monitoring Instrument becomes the means of air control, and the appearance of secondary radar is the most great technical progress of air traffic control, secondary thunder Reaching and to work together with primary radar, its main antenna is arranged on the top of primary radar, and primary radar synchronous rotary.
The pulse of secondary radar emissions is paired, and the time interval between every a pair pulse is fixing, this Every the pattern determining secondary radar.Another important component part of secondary radar system is the answering machine of dress, response on aircraft Machine is a wireless set that can send multi-form coding signal after receiving corresponding signal, and answering machine is receiving After the request signal that ground secondary radar sends, answer accordingly.These signals are received by the secondary radar antenna on ground, Through decoding, the bright spot showing this airplane just occurred at primary radar screen is displayed next to out identification number and the height of aircraft Degree, controller will readily appreciate that position and the code name of aircraft.In order to make the controller just can be very at the initial stage of challenge the aircraft Soon the luminous point on screen and corresponding aircraft being connected, on machine, answering machine also has identification function, and driver is at pipe Can press " identification " key when member processed requires, at this moment answering machine sends privileged site identification pulse (SPI), and this pulse makes Bright spot on earth station's screen broadens, with other bright spots being different from screen.
In some cases, it is possible to obtain the radar quantity of aviation secondary radar system, radar pipe with non-approach to cooperation The reason parameter such as airborne vehicle quantity and corresponding relation, significant.Further, the change Ye Shi valuable information of described system.
Summary of the invention
It is an object of the invention to provide a kind of aviation secondary radar and airborne vehicle identity identification system and discrimination method, with The problem solving to propose in above-mentioned background technology.
For achieving the above object, the present invention provides following technical scheme: aviation secondary radar and airborne vehicle identity identification system System, it is characterised in that: include, for receiving the signal receiving unit of secondary radar and Aircraft Communication;Arithmetic element, is used for carrying For the data operation needed for system and generation control instruction;Secondary radar fingerprint base, is used for storing secondary radar and institute's pipe aviation Communication attributes information between device.
Preferred version, the communication attributes information between described secondary radar and institute's pipe airborne vehicle includes secondary radar and boat One group of time interval inquiring between response, and/or the moment that described inquiry and answer signal occur is completed between pocket.
Preferred version, the communication attributes information between described secondary radar and institute's pipe airborne vehicle includes the mould of secondary radar Formula attribute information, for distinguishing the multiple-working mode of same radar.
Preferred version, described arithmetic element includes identification program, and described identification program is by by secondary radar fingerprint stock The communication attributes information of storage is compared with the live signal that signal receiving unit receives, to judge what signal receiving unit received Live signal has been stored in secondary radar fingerprint base the most.
Preferred version, described arithmetic element includes that more new procedures, described more new procedures are used for will not belong to secondary radar and refer to In communication attributes signal write storehouse in stricture of vagina storehouse, and described signal pass is coupled to corresponding radar.
Preferred version, described more new procedures also includes the communication attributes signal in write storehouse is set up archive information, described Archives signal includes but not limited to receive time and/or the geographical coordinate of described signal.
Aviation secondary radar and airborne vehicle identity identification method, it is characterised in that comprise the following steps:
A, establishment secondary radar fingerprint base initial data;
B, comparing signal receiving unit reception to data with secondary radar fingerprint base data, with identification current number According to being the most recorded in secondary radar fingerprint base;
C, identification result according to step b, determine radar corresponding to received data and/or airborne vehicle the most by Include.
Preferred version, described discrimination method includes that early warning information exports, and the output of described early warning information includes step: work as step When the judged result of b and/or step c is no, there is the warning letter of new radar and/or airborne vehicle for reminding this region in output Breath.
Preferred version, described step a specifically includes following steps:
A1, signal receiving unit receive the signal from secondary radar system, and transmit to arithmetic element;
A2, arithmetic element extract the transmission of signal and the time of reception and time interval information according to data;
The information of extraction is stored to secondary radar fingerprint base to form initial data by a3, arithmetic element.
Preferred version, described signal receiving unit receives the communication mode of data and belongs to non-cooperative communication mode.
Preferred version, described discrimination method also includes that fingerprint base data-updating method, described update method include not belonging to In communication attributes signal write storehouse in secondary radar fingerprint base, and described signal pass is coupled to corresponding radar.
Preferred version, described data-updating method also includes the communication attributes signal in write storehouse is set up archive information, Described archives signal includes but not limited to receive time and/or the geographical coordinate of described signal.
Compared with prior art, the invention has the beneficial effects as follows: the invention provides a kind of aviation secondary radar and aviation Device identity identification system and discrimination method, by the collection of radar interrogator response time and contrast judgement, it is achieved to radar The sign of identity.Identification system fits through the radar kind in the mode identification secondary radar system of non-cooperative communication and number Amount, and the pattern class of each radar and the airborne vehicle quantity administered.Simultaneously by setting up secondary radar fingerprint base, can be real The now long-term monitoring to described radar system, with realize further system is included airborne vehicle replace/increase and decrease interior change into Row real-time early warning and monitoring, be conducive to obtaining perfect information under passive state.Native system and method are based on radar and pattern The relatively-stationary inquire/response time difference caused realizes, the most efficiently.
Accompanying drawing explanation
Fig. 1 is aviation secondary radar and the airborne vehicle identity identification system diagram of one embodiment of the invention;
Fig. 2 is aviation secondary radar and the airborne vehicle identity identification method flow process diagram of one embodiment of the invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise Embodiment, broadly falls into the scope of protection of the invention.
As shown in Figures 1 and 2, the aviation secondary radar of the preferred embodiments of the present invention and airborne vehicle identity identification system, Including, for receiving the signal receiving unit of secondary radar and Aircraft Communication.Described signal of communication specifically includes radar at pipe The inquire/response signal sent during reason airborne vehicle, and the pattern information in signal.Arithmetic element, needed for being used for providing system Data operation and generate control instruction;Secondary radar fingerprint base, for storing leading between secondary radar and institute's pipe airborne vehicle Letter attribute information.Described attribute information refers to that secondary radar and/or airborne vehicle are different from the feature of other radars and/or airborne vehicle Parameter.Concrete, the communication attributes information between described secondary radar and institute's pipe airborne vehicle includes secondary radar and airborne vehicle Between complete one group of time interval inquiring between response, and/or moment that described inquiry and answer signal occur.I.e. utilize In secondary radar and pattern thereof, distinctive inquire/response time interval distinguishes different radar/patterns and airborne vehicle.By building The form of vertical file store realizes the dynamic monitoring to system.
Preferred embodiment scheme, the communication attributes information between described secondary radar and institute's pipe airborne vehicle includes secondary thunder The mode attribute information reached, for distinguishing the multiple-working mode of same radar.Usual same secondary radar comprises multiple work Pattern, the present embodiment scheme is intended to distinguish the different working modes of same radar.
Preferred embodiment scheme, described arithmetic element includes identification program, and described identification program is by referring to secondary radar The communication attributes information of stricture of vagina library storage is compared with the live signal that signal receiving unit receives, to judge signal receiving unit The live signal received has been stored in secondary radar fingerprint base the most.If existed with in fingerprint base, then it represents that monitoring To radar corresponding to signal and airborne vehicle belong to before the radar that monitored or airborne vehicle, described Monitoring Data can be used In drawing this radar and the operation time collection of illustrative plates of airborne vehicle, to understand described radar and the working law of airborne vehicle in detail.
Preferred embodiment scheme, described arithmetic element includes that more new procedures, described more new procedures are used for will not belong to secondary In communication attributes signal write storehouse in radar fingerprint base, and described signal pass is coupled to corresponding radar.To fingerprint base more Being newly to set up new radar and airborne vehicle fingerprint characteristic, this information can be reminded for, this district in the way of being same as information warning simultaneously Territory radar and the situation of change of airborne vehicle, can provide the collection of illustrative plates parameter that radar and airborne vehicle run mode of operation in detail simultaneously.
Preferred embodiment scheme, described more new procedures also includes the communication attributes signal in write storehouse is set up archives letter Breath, described archives signal includes but not limited to receive time and/or the geographical coordinate of described signal.
Aviation secondary radar and airborne vehicle identity identification method, comprise the following steps:
A, establishment secondary radar fingerprint base initial data;
B, comparing signal receiving unit reception to data with secondary radar fingerprint base data, with identification current number According to being the most recorded in secondary radar fingerprint base;
C, identification result according to step b, determine radar corresponding to received data and/or airborne vehicle the most by Include.Comparison data can be periodically exported by arranging detection frequency, detailed results can be directly exported, also according to comparison data Can only export information warning (result changed), it is also possible to be plotted as change curve (collection of illustrative plates) by multiple results and carry out figure Showing exports.
Preferred embodiment scheme, described discrimination method includes that early warning information exports, and described early warning information exports and includes step: When the judged result of step b and/or step c is no, there is new radar and/or airborne vehicle for reminding this region in output Information warning.
Preferred embodiment scheme, described step a specifically includes following steps:
A1, signal receiving unit receive the signal from secondary radar system, and transmit to arithmetic element;
A2, arithmetic element extract the transmission of signal and the time of reception and time interval information according to data;
The information of extraction is stored to secondary radar fingerprint base to form initial data by a3, arithmetic element.
Preferred embodiment scheme, described signal receiving unit receives the communication mode of data and belongs to non-cooperative communication mode.
Preferred embodiment scheme, described discrimination method also includes that fingerprint base data-updating method, described update method include Will not belong in the communication attributes signal write storehouse in secondary radar fingerprint base, and described signal pass is coupled to corresponding radar.
Preferred embodiment scheme, described data-updating method also includes the communication attributes signal in write storehouse is set up archives Information, described archives signal includes but not limited to receive time and/or the geographical coordinate of described signal.
Being mainly characterized by of above example of the present invention: 1, the relatively-stationary inquiry that will be formed in radar production process Response time poor (Millisecond) is distinguished with the random error (Microsecond grade) of radar self, and as the class of radar itself Like fingerprint in people identification identify (electromagnetism fingerprint);2, identified by the identification of radar in non-cooperative communication mode Obtain the duty (number of objects of radar management) of radar;3, system is by setting up history management archives, with police radar And the situation of change of management object.Can grasp the radar quantity in monitored area, distribution situation, each radar management right Situation and the change of situation as (aircraft).
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible Understand and these embodiments can be carried out multiple change without departing from the principles and spirit of the present invention, revise, replace And modification, the scope of the present invention be defined by the appended.

Claims (10)

1. aviation secondary radar and airborne vehicle identity identification system, it is characterised in that: include, be used for receiving secondary radar and aviation The signal receiving unit of device communication;Arithmetic element, for providing the data operation needed for system and generating control instruction;Secondary thunder Reach fingerprint base, for storing the communication attributes information between secondary radar and institute's pipe airborne vehicle.
Aviation secondary radar the most according to claim 1 and airborne vehicle identity identification system, it is characterised in that described secondary Communication attributes information between radar and institute's pipe airborne vehicle includes completing between secondary radar and airborne vehicle one group, and inquire should Time interval between answering, and/or the moment that described inquiry and answer signal occur.
Aviation secondary radar the most according to claim 1 and 2 and airborne vehicle identity identification system, it is characterised in that described Communication attributes information between secondary radar and institute's pipe airborne vehicle includes the mode attribute information of secondary radar, is used for distinguishing together The multiple-working mode of one radar.
Aviation secondary radar the most according to claim 3 and airborne vehicle identity identification system, it is characterised in that described computing Unit includes identification program, and described identification program is received with signal by the communication attributes information stored by secondary radar fingerprint base The live signal that unit receives is compared, to judge that the live signal that signal receiving unit receives has been stored in secondary thunder the most Reach in fingerprint base.
5. according to the aviation secondary radar described in claim 3 or 4 and airborne vehicle identity identification system, it is characterised in that described Arithmetic element includes more new procedures, and described more new procedures is write for the communication attributes signal that will not belong in secondary radar fingerprint base In warehouse-in, and described signal pass is coupled to corresponding radar.
6. according to the aviation secondary radar described in any one claim of claim 1-5 and airborne vehicle identity identification system, It is characterized in that, described more new procedures also includes the communication attributes signal in write storehouse is set up archive information, and described archives are believed Number include but not limited to receive time and/or the geographical coordinate of described signal.
7. aviation secondary radar and airborne vehicle identity identification method, it is characterised in that comprise the following steps:
A, establishment secondary radar fingerprint base initial data;
B, comparing signal receiving unit reception with secondary radar fingerprint base data to data, with identification current data be No it is recorded in secondary radar fingerprint base;
C, identification result according to step b, determine that radar corresponding to received data and/or airborne vehicle are received the most Record.
Aviation secondary radar the most according to claim 7 and airborne vehicle identity identification method, it is characterised in that described identification Method includes that early warning information exports, and the output of described early warning information includes step: when the judged result of step b and/or step c is no Time, there is new radar and/or the information warning of airborne vehicle for reminding this region in output.
9. according to the aviation secondary radar described in claim 7 or 8 and airborne vehicle identity identification method, it is characterised in that described Step a specifically includes following steps:
A1, signal receiving unit receive the signal from secondary radar system, and transmit to arithmetic element;
A2, arithmetic element extract the transmission of signal and the time of reception and time interval information according to data;
The information of extraction is stored to secondary radar fingerprint base to form initial data by a3, arithmetic element.
10. according to the aviation secondary radar described in any one claim of claim 7-9 and airborne vehicle identity identification method, It is characterized in that, described discrimination method also includes that fingerprint base data-updating method, described update method include will not belong to secondary In communication attributes signal write storehouse in radar fingerprint base, and described signal pass is coupled to corresponding radar.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109270520A (en) * 2018-10-18 2019-01-25 四川九洲空管科技有限责任公司 The processing method of secondary radar response target identities code is obtained based on amplitude information
CN113030946A (en) * 2021-02-05 2021-06-25 北京航空航天大学 Secondary radar detection method, apparatus, device, system, medium, and program product
CN114301494A (en) * 2021-12-27 2022-04-08 中国航天科工集团八五一一研究所 DSP-based friend or foe identification interpretation method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030007690A1 (en) * 2001-01-12 2003-01-09 Ram Rajagopal System and method for image pattern matching using a unified signal transform
CN101739859A (en) * 2009-11-30 2010-06-16 四川川大智胜软件股份有限公司 Scene surveillance radar simulation system
CN101950019A (en) * 2010-09-08 2011-01-19 四川九洲电器集团有限责任公司 Method for identifying multi-level targets by secondary radar based on attributive data
CN104867342A (en) * 2014-02-26 2015-08-26 厦门瑞忆科技有限公司 Electronic device with functions of intelligent data acquisition and cloud information pushing
CN104933900A (en) * 2015-06-26 2015-09-23 中国人民解放军63898部队 Display control method and system for secondary radar command post system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030007690A1 (en) * 2001-01-12 2003-01-09 Ram Rajagopal System and method for image pattern matching using a unified signal transform
CN101739859A (en) * 2009-11-30 2010-06-16 四川川大智胜软件股份有限公司 Scene surveillance radar simulation system
CN101950019A (en) * 2010-09-08 2011-01-19 四川九洲电器集团有限责任公司 Method for identifying multi-level targets by secondary radar based on attributive data
CN104867342A (en) * 2014-02-26 2015-08-26 厦门瑞忆科技有限公司 Electronic device with functions of intelligent data acquisition and cloud information pushing
CN104933900A (en) * 2015-06-26 2015-09-23 中国人民解放军63898部队 Display control method and system for secondary radar command post system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
杨卓等: ""基于核主成分分析的二次雷达脉冲信号初始特征提取"", 《电讯技术》 *
马红星: ""雷达个体识别系统设计"", 《网络与信息技术》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109270520A (en) * 2018-10-18 2019-01-25 四川九洲空管科技有限责任公司 The processing method of secondary radar response target identities code is obtained based on amplitude information
CN113030946A (en) * 2021-02-05 2021-06-25 北京航空航天大学 Secondary radar detection method, apparatus, device, system, medium, and program product
CN113030946B (en) * 2021-02-05 2024-05-07 北京航空航天大学 Secondary radar detection method, device, equipment, system, medium and program product
CN114301494A (en) * 2021-12-27 2022-04-08 中国航天科工集团八五一一研究所 DSP-based friend or foe identification interpretation method

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