CN110988786A - Array direction finding calibration method - Google Patents
Array direction finding calibration method Download PDFInfo
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- CN110988786A CN110988786A CN201911141795.7A CN201911141795A CN110988786A CN 110988786 A CN110988786 A CN 110988786A CN 201911141795 A CN201911141795 A CN 201911141795A CN 110988786 A CN110988786 A CN 110988786A
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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
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/023—Monitoring or calibrating
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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
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/14—Systems for determining direction or deviation from predetermined direction
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention provides an array direction finding calibration method, which is characterized in that a calibration signal source is added on an array direction finding calibration system, and the method is characterized in that a method combining pre-calibration and real-time calibration is adopted, the relative error between channels and the amplitude-phase error before the channels are calculated and utilized, the amplitude-phase error calibration and the direction consistency calibration of array signals are carried out, and then super-resolution DOA estimation is carried out. According to the invention, the auxiliary signal source is added, and a mode of combining pre-calibration and real-time calibration is adopted, so that signal source data is collected for real-time calibration every time of direction finding, the error of the array signal is efficiently calibrated, and the calculation is simple.
Description
Technical Field
The invention relates to the technical field of radio direction finding, in particular to an array direction finding calibration method.
Background
In order to enhance a desired signal, a direction-finding station is often placed at a plurality of different positions to form an array signal for direction finding. The super-resolution array direction finding technology is an important research direction and is widely applied to the military fields of radars, sonars and the like. With the development of national defense science and technology, the future war is the information war of high technology, the super-resolution array direction-finding technology occupies an important position in the electronic war, but array errors are inevitable due to factors such as antenna technology, the environment of the array and the like; the direction finding of the super-resolution array has very strict requirements on the consistency of the array, and the direction finding error can be increased and even failed due to array errors. Therefore, the calibration of the array error is particularly important, the existing calibration methods include an adaptive calibration method and an auxiliary information source calibration method, but the global convergence of the adaptive calibration method is difficult to guarantee, and the auxiliary information source needs to have a precisely known direction, so that the method is not suitable for engineering.
The above problems are worth solving.
Disclosure of Invention
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a method for calibrating direction of array features that a calibration signal source is added to the calibration system of direction finding array, and features that the method combining pre-calibration with real-time calibration is used to calibrate the amplitude and phase errors and direction consistency of array signals, and then super-resolution DOA estimation is performed.
The present invention according to the above aspect is characterized by comprising the steps of:
(1) the number of array element channels of the antenna array is set as M;
(2) pre-calibrating an auxiliary signal source in front of an array element channel;
(3) and calibrating the real-time direction-finding signal source in real time.
Further, the step (2) comprises:
(21) obtaining an amplitude-phase error calibration matrix A by adopting a 0-degree auxiliary signal source methodci:Aci=(Ac1,Ac2,……,AcM);
(22) Collecting calibration signal source data: controlling each channel to collect calibration signal source data, wherein the fast beat number is M and is respectively recorded as XJi;
(23) Obtaining the relative error A between channelsJi: normalization, denoted A, was performed with channel 1 as referenceJi=XJi/XJ1;
(24) Calculating the amplitude-phase error A in front of the channelTi=Aci/AJi;
(25) A is to beTiIs stored in the system.
Further, the step (3) comprises:
(31) acquiring data of a signal source to be detected: each time of direction finding, each channel is controlled to collect signal data to be direction-found, the fast beat number is M, and the fast beat number is recorded as Xi=(X1,X2,……,XM);
(32) Acquiring calibration signal data, i.e. repeating said steps (22) and (23), importing AJiValues as a real-time direction-finding calibration matrix;
(33) and (3) amplitude and phase error calibration: calibrating amplitude-phase error of acquired channel data, i.e. XAi=Xi/(AJi×ATi);
(34) Calibrating direction consistency: with reference to channel 1, a direction consistency calibration is performed, i.e. XAS=XAi/E(XA1);
(35) Calculating the identity matrix R ═ XASXAS′。
Further, A in the step (21)c1=1。
Further, A in the step (23)J1=1。
Further, i is a natural number, and 1 ≦ i ≦ M.
The invention has the following beneficial effects:
by adding the auxiliary signal source, a mode of combining pre-calibration and real-time calibration is adopted, signal source data are collected for real-time calibration during direction finding each time, errors of array signals are efficiently calibrated, array consistency is improved, and therefore accuracy of array direction finding is improved.
Drawings
FIG. 1 is a flow chart of the overall implementation of the present invention.
FIG. 2 is a flow chart of pre-channel calibration in the present invention.
Fig. 3 is a flow chart of the real-time calibration in the present invention.
Detailed Description
The invention provides an array direction finding calibration method, which solves the problems of complex algorithm and inapplicable engineering of the existing array direction finding algorithm, adds a 0-degree auxiliary signal source on the basis of the original direction finding system, and calibrates the channel error and the directional diagram error of an array by adopting a mode of combining pre-calibration and real-time calibration.
As shown in fig. 1 to 3, a method for calibrating an array direction finding adds a calibration signal source to an array direction finding calibration system, and specifically includes the following steps:
(1) the number of array element channels of the antenna array is set as M.
(2) The method for pre-calibrating the auxiliary signal source in front of the array element channel comprises the following steps:
(21) obtaining an amplitude-phase error calibration matrix A by adopting a 0-degree auxiliary signal source methodci:Aci=(Ac1,Ac2,……,AcM),
i is a natural number, and 1 ≦ i ≦ M, where A isc1=1;
(22) Collecting calibration signal source data: controlling each channel to collect calibration signal source data, wherein the fast beat number is M and is respectively recorded as XJiI is a natural number, and 1 ≦ i ≦ M;
(23) obtaining the relative error A between channelsJi: normalization, denoted A, was performed with channel 1 as referenceJi=XJi/XJ1,
i is a natural number, and 1 ≦ i ≦ M, where A isJ1=1;
(24) Calculating the amplitude-phase error A in front of the channelTi=Aci/AJiI is a natural number, and 1 ≦ i ≦ M;
(25) a is to beTiIs stored in the system.
(3) The method for calibrating the real-time direction-finding signal source in real time comprises the following steps:
(31) acquiring data of a signal source to be detected: each time of direction finding, each channel is controlled to collect signal data to be direction-found, the fast beat number is M, and the fast beat number is recorded as Xi=(X1,X2,……,XM) I is a natural number, and 1 ≦ i ≦ M;
(32) acquiring calibration signal data, i.e. repeating said steps (22) and (23), importing AJiValues as a real-time direction-finding calibration matrix;
(33) and (3) amplitude and phase error calibration: calibrating amplitude-phase error of acquired channel data, i.e. XAi=Xi/(AJi×ATi),
i is a natural number, and 1 ≦ i ≦ M;
(34) calibrating direction consistency: with reference to channel 1, a direction consistency calibration is performed, i.e. XAS=XAi/E(XA1),
i is a natural number, and 1 ≦ i ≦ M;
(35) calculating the identity matrix R ═ XASXAS′。
(4) A super-resolution DOA estimation is performed.
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention are clearly and completely described through implementation modes by referring to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (7)
1. A method for calibrating direction of array features that a calibration signal source is added to the calibration system of direction finding array, and features that the method combining pre-calibration with real-time calibration is used to calibrate the amplitude-phase error and direction uniformity of array signals, and then super-resolution DOA estimation is performed.
2. An array direction-finding calibration method according to claim 1, characterized by comprising the following steps:
(1) the number of array element channels of the antenna array is set as M;
(2) pre-calibrating an auxiliary signal source in front of an array element channel;
(3) and calibrating the real-time direction-finding signal source in real time.
3. An array direction-finding calibration method according to claim 2, wherein the step (2) comprises:
(21) obtaining an amplitude-phase error calibration matrix A by adopting a 0-degree auxiliary signal source methodci:Aci=(Ac1,Ac2,……,AcM);
(22) Collecting calibration signal source data: controlling each channel to collect calibration signal source data, wherein the fast beat number is M and is respectively recorded as XJi;
(23) Obtaining the relative error A between channelsJi: normalization, denoted A, was performed with channel 1 as referenceJi=XJi/ XJ1;
(24) Calculating the amplitude-phase error A in front of the channelTi=Aci/ AJi;
(25) A is to beTiIs stored in the system.
4. An array direction-finding calibration method according to claim 2, wherein the step (3) comprises:
(31) acquiring data of a signal source to be detected: each time of direction finding, each channel is controlled to collect signal data to be direction-found, the fast beat number is M, and the fast beat number is recorded as Xi=(X1,X2,……,XM);
(32) Acquiring calibration signal data, i.e. repeating said steps (22) and (23), importing AJiValues as a real-time direction-finding calibration matrix;
(33) and (3) amplitude and phase error calibration: calibrating amplitude-phase error of acquired channel data, i.e. XAi=Xi/(AJi×ATi);
(34) Calibrating direction consistency: with reference to channel 1, a direction consistency calibration is performed, i.e. XAS=XAi/E(XA1);
(35) Calculating identity matrix R = XASXAS´。
5. An array direction-finding calibration method according to claim 3, characterized in that in step (21), Ac1=1。
6. An array direction-finding calibration method according to claim 3, characterized in that in the step (23), AJ1=1。
7. The method of claim 3 or 4, wherein i is a natural number and 1 ≦ i ≦ M.
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Publication number | Priority date | Publication date | Assignee | Title |
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CN113746571A (en) * | 2021-08-25 | 2021-12-03 | 成都飞机工业(集团)有限责任公司 | Calibration and direction finding inspection method for aerial carrier antenna array |
Citations (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1466392A (en) * | 2002-06-25 | 2004-01-07 | 深圳市中兴通讯股份有限公司 | Blind correction method and device for self-adaptive array antenna |
CN1740812A (en) * | 2005-06-17 | 2006-03-01 | 武汉大学 | Near-field calibrating method for high frequency surface wave radar uniform straight line array receiving channel |
GB0821580D0 (en) * | 2008-11-26 | 2008-12-31 | Ubidyne Inc | A calibration apparatus and a method for generating at least one calibration signal for an antenna array |
CN102426350A (en) * | 2011-08-31 | 2012-04-25 | 西安空间无线电技术研究所 | Method for determining amplitude phase errors of direction-finding channels of space-borne array antenna |
CN102544755A (en) * | 2011-12-31 | 2012-07-04 | 哈尔滨工业大学 | Uniform linear array calibration method based on strong scattering points |
RU2456631C1 (en) * | 2011-02-17 | 2012-07-20 | Федеральное государственное военное образовательное учреждение высшего профессионального образования "Военный авиационный инженерный университет" (г. Воронеж) Министерства обороны Российской Федерации | Method for adaptive spatial compensation of interference during monopulse amplitude integral-differential direction finding and presence of receiving channel calibration errors |
CN103592639A (en) * | 2013-11-20 | 2014-02-19 | 中国船舶重工集团公司第七二四研究所 | Digital array radar amplitude-phase monitoring and calibration method based on optical fiber delay system |
CN104297736A (en) * | 2014-09-23 | 2015-01-21 | 西安电子工程研究所 | Correction method for radar receiving channel array |
CN105977776A (en) * | 2016-06-22 | 2016-09-28 | 中国科学院光电研究院 | Absolute wavelength calibration and adjustment device and method |
WO2016202258A1 (en) * | 2015-06-16 | 2016-12-22 | 华为技术有限公司 | Method, device and system for antenna array calibration |
CN106405485A (en) * | 2016-09-30 | 2017-02-15 | 电子科技大学 | Correction source position unknown antenna array column amplitude phase error correction method in movement |
CN206161841U (en) * | 2016-11-11 | 2017-05-10 | 南京鑫轩电子***工程有限公司 | 6~18GHZ active phased array function debug system |
CN107607915A (en) * | 2017-08-14 | 2018-01-19 | 西安电子工程研究所 | Connectors for Active Phased Array Radar receiving channels calibration method based on static echo from ground features |
CN108375752A (en) * | 2018-02-05 | 2018-08-07 | 中国人民解放军战略支援部队信息工程大学 | Amplitude phase error single radiation source direction-finding method based on full angle search |
CN108872926A (en) * | 2018-07-11 | 2018-11-23 | 哈尔滨工程大学 | A kind of amplitude and phase error correction and DOA estimation method based on convex optimization |
CN109495189A (en) * | 2017-09-11 | 2019-03-19 | 大唐移动通信设备有限公司 | A kind of array antenna calibration method and device |
CN109507635A (en) * | 2018-11-09 | 2019-03-22 | 中国电子科技集团公司第二十八研究所 | Utilize the array amplitude phase error evaluation method of two unknown orientation auxiliary sources |
CN109541510A (en) * | 2018-11-12 | 2019-03-29 | 北京航空航天大学 | One kind being suitable for array radiation meter channel calibration of amplitude and phase method and device |
CN109541558A (en) * | 2018-09-30 | 2019-03-29 | 航天恒星科技有限公司 | A kind of calibration method of whole process total system Active Phase-Array Radar target seeker |
CN109725298A (en) * | 2019-01-10 | 2019-05-07 | 江苏大学 | A kind of array manifold based on order damage rooting calibrates for error and Wave arrival direction estimating method |
-
2019
- 2019-11-20 CN CN201911141795.7A patent/CN110988786B/en active Active
Patent Citations (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1466392A (en) * | 2002-06-25 | 2004-01-07 | 深圳市中兴通讯股份有限公司 | Blind correction method and device for self-adaptive array antenna |
CN1740812A (en) * | 2005-06-17 | 2006-03-01 | 武汉大学 | Near-field calibrating method for high frequency surface wave radar uniform straight line array receiving channel |
GB0821580D0 (en) * | 2008-11-26 | 2008-12-31 | Ubidyne Inc | A calibration apparatus and a method for generating at least one calibration signal for an antenna array |
RU2456631C1 (en) * | 2011-02-17 | 2012-07-20 | Федеральное государственное военное образовательное учреждение высшего профессионального образования "Военный авиационный инженерный университет" (г. Воронеж) Министерства обороны Российской Федерации | Method for adaptive spatial compensation of interference during monopulse amplitude integral-differential direction finding and presence of receiving channel calibration errors |
CN102426350A (en) * | 2011-08-31 | 2012-04-25 | 西安空间无线电技术研究所 | Method for determining amplitude phase errors of direction-finding channels of space-borne array antenna |
CN102544755A (en) * | 2011-12-31 | 2012-07-04 | 哈尔滨工业大学 | Uniform linear array calibration method based on strong scattering points |
CN103592639A (en) * | 2013-11-20 | 2014-02-19 | 中国船舶重工集团公司第七二四研究所 | Digital array radar amplitude-phase monitoring and calibration method based on optical fiber delay system |
CN104297736A (en) * | 2014-09-23 | 2015-01-21 | 西安电子工程研究所 | Correction method for radar receiving channel array |
WO2016202258A1 (en) * | 2015-06-16 | 2016-12-22 | 华为技术有限公司 | Method, device and system for antenna array calibration |
CN105977776A (en) * | 2016-06-22 | 2016-09-28 | 中国科学院光电研究院 | Absolute wavelength calibration and adjustment device and method |
CN106405485A (en) * | 2016-09-30 | 2017-02-15 | 电子科技大学 | Correction source position unknown antenna array column amplitude phase error correction method in movement |
CN206161841U (en) * | 2016-11-11 | 2017-05-10 | 南京鑫轩电子***工程有限公司 | 6~18GHZ active phased array function debug system |
CN107607915A (en) * | 2017-08-14 | 2018-01-19 | 西安电子工程研究所 | Connectors for Active Phased Array Radar receiving channels calibration method based on static echo from ground features |
CN109495189A (en) * | 2017-09-11 | 2019-03-19 | 大唐移动通信设备有限公司 | A kind of array antenna calibration method and device |
CN108375752A (en) * | 2018-02-05 | 2018-08-07 | 中国人民解放军战略支援部队信息工程大学 | Amplitude phase error single radiation source direction-finding method based on full angle search |
CN108872926A (en) * | 2018-07-11 | 2018-11-23 | 哈尔滨工程大学 | A kind of amplitude and phase error correction and DOA estimation method based on convex optimization |
CN109541558A (en) * | 2018-09-30 | 2019-03-29 | 航天恒星科技有限公司 | A kind of calibration method of whole process total system Active Phase-Array Radar target seeker |
CN109507635A (en) * | 2018-11-09 | 2019-03-22 | 中国电子科技集团公司第二十八研究所 | Utilize the array amplitude phase error evaluation method of two unknown orientation auxiliary sources |
CN109541510A (en) * | 2018-11-12 | 2019-03-29 | 北京航空航天大学 | One kind being suitable for array radiation meter channel calibration of amplitude and phase method and device |
CN109725298A (en) * | 2019-01-10 | 2019-05-07 | 江苏大学 | A kind of array manifold based on order damage rooting calibrates for error and Wave arrival direction estimating method |
Non-Patent Citations (5)
Title |
---|
WANG DING; ZHANG LI AND WU YING: "Self-calibration algorithm for DOA estimation in presence of sensor amplitude, phase uncertainties and sensor position errors", 《 JOURNAL OF DATA ACQUISITION & PROCESSING》, pages 176 - 181 * |
初萍: "基于宽频带***的被动雷达测向技术", pages 136 - 89 * |
吴迪: "基于不完全重合信号的高分辨测向技术研究", 《中国优秀硕士学位论文全文数据库 信息科技辑》, pages 136 - 510 * |
张玉峰;马洪;陈劲峰;: "低复杂度圆阵幅相误差校正方法", 华中科技大学学报(自然科学版), no. 09 * |
陈辉: "高分辨波达方向估计关键技术研究", 《中国博士学位论文全文数据库 信息科技辑》, pages 136 - 5 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113746571A (en) * | 2021-08-25 | 2021-12-03 | 成都飞机工业(集团)有限责任公司 | Calibration and direction finding inspection method for aerial carrier antenna array |
CN113746571B (en) * | 2021-08-25 | 2022-05-10 | 成都飞机工业(集团)有限责任公司 | Calibration and direction finding inspection method for aerial carrier antenna array |
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