CN113740796B - Device and method for enabling calibration radiation source to face normal line of direction-finding antenna - Google Patents
Device and method for enabling calibration radiation source to face normal line of direction-finding antenna Download PDFInfo
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- CN113740796B CN113740796B CN202110834809.4A CN202110834809A CN113740796B CN 113740796 B CN113740796 B CN 113740796B CN 202110834809 A CN202110834809 A CN 202110834809A CN 113740796 B CN113740796 B CN 113740796B
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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
Abstract
The invention discloses a device and a method for enabling a calibration radiation source to face a normal line of a direction-finding antenna, wherein the device comprises the calibration radiation source, a vision measurement system, a laser receiving and transmitting measurement system, a master controller and a servo system; the calibration radiation source, the vision measurement system, the laser receiving and transmitting measurement system and the master controller are all arranged on the servo system, and the normal directions of the microwave radiation aperture of the calibration radiation source, the vision measurement system and the optical aperture of the laser receiving and transmitting measurement system are consistent; the master controller is in data cross-linking with the calibration radiation source, the vision measurement system, the laser receiving and transmitting measurement system and the servo system, and can control the operation or stop of the calibration radiation source, the vision measurement system, the laser receiving and transmitting measurement system and the servo system; when the electronic equipment direction-finding system is calibrated, the direction-finding radiation source can be accurately, efficiently and safely aligned to the normal line of the direction-finding antenna, and the like.
Description
Technical Field
The invention relates to the field of direction finding system calibration of electronic equipment, in particular to a device and a method for enabling a calibration radiation source to face a normal line of a direction finding antenna.
Background
Along with the continuous improvement of performance requirements and the continuous progress of technology, the direction-finding system of the electronic equipment is more and more complex, the number of the direction-finding antennas contained in the system is more and more increased, and the requirement for calibrating the direction-finding system is more strict. When calibrating a direction-finding system of an electronic device, it is generally required that a calibration radiation source must face the normal direction of a direction-finding antenna. Since the antenna housing is already installed outside the direction-finding antenna when calibrating, a line perpendicular to a tangent line of the geometric center of the antenna housing surface is generally considered as an antenna normal.
At present, the existing method for enabling the calibration radiation source to face the normal direction of the direction-finding antenna is as follows:
1) At least one operator is respectively arranged at two positions of the direction finding antenna and the calibration radiation source;
2) At the position of the direction-finding antenna, measuring the geometric dimension of the direction-finding antenna housing by using a ruler, and finding the geometric center of the geometric dimension;
3) Aligning the bottom center of the laser range finder with the geometric center of the radome at the position of the direction finding antenna, and tightly attaching the laser range finder to the radome, and simultaneously keeping the laser range finder horizontal;
4) At the position of the direction finding antenna, opening a laser range finder to emit a laser beam;
5) At the calibration radiation source, a flat plate is used for finding a laser beam emitted by the laser range finder at a required distance, and the laser beam forms a light spot on the flat plate;
6) At the calibration radiation source, the bottom center of the calibration radiation source is aligned with the spot on the plate while the calibration radiation source is kept horizontal. At this point, the calibration radiation source is considered to be aligned with the normal of the direction-finding antenna. And then operating the calibration radiation source to generate and radiate a calibration signal to finish calibration.
The method mainly relies on manual measurement and operation, and the direction-finding radome needs to be touched, so that the method has the defects of low precision, low efficiency and high manpower resource requirement, and the radome is damaged.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a device and a method for enabling a calibration radiation source to be opposite to the normal line of a direction-finding antenna.
The invention aims at realizing the following scheme:
a device for enabling a calibration radiation source to face a normal line of a direction-finding antenna comprises the calibration radiation source, a vision measurement system, a laser receiving and transmitting measurement system, a main controller and a servo system; the calibration radiation source, the vision measurement system, the laser receiving and transmitting measurement system and the master controller are all arranged on the servo system, and the normal directions of the microwave radiation aperture of the calibration radiation source, the vision measurement system and the optical aperture of the laser receiving and transmitting measurement system are consistent; the main controller is in data cross-linking with the calibration radiation source, the vision measuring system, the laser receiving and transmitting measuring system and the servo system, and can control the operation or stop of the calibration radiation source, the vision measuring system, the laser receiving and transmitting measuring system and the servo system.
Further, the vision measurement system is provided with a camera, the camera is used for photographing the direction-finding radome to acquire photo data, and the main controller calculates the geometric center of the direction-finding radome through vision identification according to the acquired photo data.
Further, the laser receiving and transmitting measuring system can emit laser beams, simultaneously receive the reflected laser beams and measure the angle difference between the emitted laser beams and the reflected laser beams, and the master controller calculates and controls the servo system to move according to the measured values.
Further, the normal directions of the microwave radiation aperture of the calibration radiation source, the normal directions of the optical apertures of the vision measurement system and the normal directions of the optical apertures of the laser receiving and transmitting measurement system are all horizontal directions.
A method of aligning a calibration radiation source to a direction-finding antenna normal based on an apparatus as claimed in any one of the preceding claims, comprising the steps of:
s1, the device is used in a calibration application scene that a calibration radiation source is opposite to the normal line of a direction-finding antenna, the device is arranged in front of the calibrated direction-finding antenna, the height of the device is consistent with the installation height of the calibrated direction-finding antenna, and the distance between the device and the device accords with the calibration requirement;
s2, photographing the calibrated direction-finding radome by the vision measurement system, and calculating the geometric center of the direction-finding radome by a vision identification methodAnd informs the master controller;
s3, under the control of the master controller, the laser receiving and transmitting measurement system is aligned to the geometric centerEmitting a laser beam, then measuring an angle difference alpha between the emitted beam and the reflected beam, and informing a master controller;
s4, the main controller corrects the angle difference alpha according to the size of the installation position between the vision measurement system and the laser receiving and transmitting measurement system to obtain an absolute angle difference alpha';
s5, if the absolute angle difference alpha 'is not smaller than a predetermined threshold value m, the master controller controls the servo system to move once with the absolute angle difference alpha' as a purpose, the movement amplitude is related to the value of the absolute angle difference alpha ', and then the step S2 is returned to, and the operation is repeated until the absolute angle difference alpha' is smaller than the threshold value m; when the absolute angle difference alpha' is smaller than the threshold value m, the main controller controls the servo system to make correction movement according to the size of the installation positions of the laser receiving and transmitting measurement system and the calibration radiation source, so that the calibration radiation source is completely opposite to the light path of the reflected light beam;
s6, the main controller controls the calibration radiation source to generate and radiate calibration signals, and calibration work is completed.
Further, in step S1, disposing the device in front of the calibrated direction-finding antenna includes disposing in front of the calibrated direction-finding antenna.
The beneficial effects of the invention include:
according to the embodiment of the invention, a non-contact and automatic mode is adopted, when the direction-finding system of the electronic equipment is calibrated, the direction-finding radiation source is opposite to the normal line of the direction-finding antenna, errors caused by human factors during operation are eliminated, the calibration precision is ensured, meanwhile, the working efficiency is improved by an automatic means, the work can be completed by at least one operator, the direction-finding radome cannot be touched in the whole process, and the method is safe and reliable.
In the actual verification of the invention, when the direction-finding system of the electronic equipment is calibrated, the condition that the performance of the direction-finding system is not up to standard due to insufficient calibration accuracy does not occur after the method and the device of the embodiment of the invention are adopted, the working period of the calibration is shortened by more than 20% compared with that of the method without the invention, and the event that the surface of the direction-finding radome is worn or the radome body is damaged due to the calibration work does not occur.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of the structural composition of the system of the present invention;
FIG. 2 is a flow chart of the steps of the method of the present invention.
Detailed Description
All of the features disclosed in all of the embodiments of this specification, or all of the steps in any method or process disclosed implicitly, except for the mutually exclusive features and/or steps, may be combined and/or expanded and substituted in any way.
As shown in fig. 1, a device for enabling a calibration radiation source to face a normal line of a directional antenna comprises the calibration radiation source, a vision measurement system, a laser receiving and transmitting measurement system, a master controller and a servo system, wherein the following parts are described:
the calibration radiation source can generate radio frequency signals required by calibration and radiate out; after the vision measurement system adopts a high-precision camera to photograph the direction-finding radome, the geometrical center of the direction-finding radome is found by a vision identification method; the laser receiving and transmitting measuring system can emit laser beams, simultaneously receive the reflected laser beams and measure the angle difference between the emitted light beams and the reflected light beams; the servo system is controlled by the main controller to move in the directions of horizontal, vertical, left and right azimuth angles and the like; the calibration radiation source, the vision measurement system, the laser receiving and transmitting measurement system and the master controller are all installed and fixed on the servo system, and the normal directions of the microwave radiation aperture of the calibration radiation source, the normal directions of the optical aperture of vision and the normal directions of the optical aperture of laser are consistent and horizontal; the main controller is in data cross-linking with the calibration radiation source, the vision measuring system, the laser receiving and transmitting measuring system and the servo system, and can control the running and stopping of the devices; the main controller can receive the measured values measured by the vision measuring system and the laser receiving and transmitting measuring system, and calculates and controls the motion of the servo system according to the measured values.
As shown in fig. 2, a method for aligning a radiation source to be opposite to a normal line of a direction-finding antenna includes the following steps:
1) The device is used in a calibration application scene that the calibration radiation source is opposite to the normal line of the direction-finding antenna, and is arranged in front of the calibrated direction-finding antenna, the height of the device is consistent with the installation height of the calibrated direction-finding antenna, and the distance between the device and the device accords with the calibration requirement;
2) The vision measurement system photographs the calibrated direction-finding radome, extracts the outline in the image by a vision identification method, for example, adopts algorithms such as threshold segmentation and edge searching to obtain the outline size of the radome, and then calculates the geometric center of the direction-finding radomeAnd informs the master controller;
3) Under the control of the master controller, the laser receiving and transmitting measuring system is aligned with the geometryCenter of the machineEmitting a laser beam, then measuring an angle difference alpha between the emitted beam and the reflected beam, and informing a master controller;
4) Because the positions of the vision measurement system and the laser receiving and transmitting measurement system are different, the main controller corrects the angle difference alpha according to the installation position size between the vision measurement system and the laser receiving and transmitting measurement system to obtain an absolute angle difference alpha'; if the absolute angle difference alpha ' is not smaller than a predetermined threshold value m, the master controller controls the servo system to do one movement with the aim of the absolute angle difference alpha ', and the movement amplitude is related to the value of the absolute angle difference alpha '. Then returning to the step S2, and repeating the operation until the absolute angle difference alpha' is smaller than the threshold value m; when the absolute angle difference alpha' is smaller than the threshold value m, the main controller controls the servo system to make correction movement according to the size of the installation positions of the laser receiving and transmitting measurement system and the calibration radiation source, so that the calibration radiation source is completely opposite to the light path of the reflected light beam;
5) The main controller controls the calibration radiation source to generate and radiate calibration signals, and calibration work is completed.
The invention is not related in part to the same as or can be practiced with the prior art.
The foregoing technical solution is only one embodiment of the present invention, and various modifications and variations can be easily made by those skilled in the art based on the application methods and principles disclosed in the present invention, not limited to the methods described in the foregoing specific embodiments of the present invention, so that the foregoing description is only preferred and not in a limiting sense.
In addition to the foregoing examples, those skilled in the art will recognize from the foregoing disclosure that other embodiments can be made and in which various features of the embodiments can be interchanged or substituted, and that such modifications and changes can be made without departing from the spirit and scope of the invention as defined in the appended claims.
The inventive functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in the form of a software product stored in a storage medium and executing all or part of the steps of the method according to the embodiments of the present invention in a computer device (which may be a personal computer, a server, or a network device, etc.) and corresponding software. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, and an optical disk, and test or actual data exist in a read-only memory (Random Access Memory, RAM), a random access memory (Random Access Memory, RAM), and the like in program implementation.
Claims (2)
1. A method for enabling a calibration radiation source to face a normal line of a direction-finding antenna, which is characterized by being based on a device for enabling the calibration radiation source to face the normal line of the direction-finding antenna, and comprising the calibration radiation source, a vision measurement system, a laser receiving and transmitting measurement system, a main controller and a servo system; the calibration radiation source, the vision measurement system, the laser receiving and transmitting measurement system and the master controller are all arranged on the servo system, and the normal directions of the microwave radiation aperture of the calibration radiation source, the vision measurement system and the optical aperture of the laser receiving and transmitting measurement system are consistent; the master controller is in data cross-linking with the calibration radiation source, the vision measurement system, the laser receiving and transmitting measurement system and the servo system, and can control the operation or stop of the calibration radiation source, the vision measurement system, the laser receiving and transmitting measurement system and the servo system; the vision measurement system is provided with a camera, the camera is used for photographing the direction-finding radome to acquire photo data, and the main controller calculates the geometric center of the direction-finding radome through vision identification according to the acquired photo data; the laser receiving and transmitting measuring system can emit laser beams, simultaneously receive the reflected laser beams and measure the angle difference between the emitted laser beams and the reflected laser beams, and the master controller calculates and controls the servo system to move according to the measured values; the normal directions of the microwave radiation aperture of the calibration radiation source, the vision measurement system and the optical aperture of the laser receiving and transmitting measurement system are all in the horizontal direction; the method also comprises the steps of:
s1, the device is used in a calibration application scene that a calibration radiation source is opposite to the normal line of a direction-finding antenna, the device is arranged in front of the calibrated direction-finding antenna, the height of the device is consistent with the installation height of the calibrated direction-finding antenna, and the distance between the device and the device accords with the calibration requirement;
s2, photographing the calibrated direction-finding radome by the vision measurement system, and calculating the geometric center of the direction-finding radome by a vision identification methodAnd informs the master controller;
s3, under the control of the master controller, the laser receiving and transmitting measurement system is aligned to the geometric centerEmitting a laser beam, then measuring an angle difference alpha between the emitted beam and the reflected beam, and informing a master controller;
s4, the main controller corrects the angle difference alpha according to the size of the installation position between the vision measurement system and the laser receiving and transmitting measurement system to obtain an absolute angle difference alpha';
s5, if the absolute angle difference alpha 'is not smaller than a predetermined threshold value m, the master controller controls the servo system to move once with the absolute angle difference alpha' as a purpose, the movement amplitude is related to the value of the absolute angle difference alpha ', and then the step S2 is returned to, and the operation is repeated until the absolute angle difference alpha' is smaller than the threshold value m; when the absolute angle difference alpha' is smaller than the threshold value m, the main controller controls the servo system to make correction movement according to the size of the installation positions of the laser receiving and transmitting measurement system and the calibration radiation source, so that the calibration radiation source is completely opposite to the light path of the reflected light beam;
s6, the main controller controls the calibration radiation source to generate and radiate calibration signals, and calibration work is completed.
2. A method for aligning a direction finding antenna normal with a radiation source according to claim 1, wherein in step S1, positioning the device in front of the direction finding antenna being aligned comprises positioning the device in front of the direction finding antenna being aligned.
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Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4146329A (en) * | 1977-09-14 | 1979-03-27 | The United States Of America As Represented By The Secretary Of The Navy | Autoalignment system for high power laser |
| US7064817B1 (en) * | 2003-11-04 | 2006-06-20 | Sandia Corporation | Method to determine and adjust the alignment of the transmitter and receiver fields of view of a LIDAR system |
| KR100785477B1 (en) * | 2006-10-20 | 2007-12-13 | 삼성중공업 주식회사 | Calibration method for pipe auto-alignment apparatus |
| CN102494612A (en) * | 2011-12-06 | 2012-06-13 | 南京航空航天大学 | Novel optical calibration equipment of radio-frequency simulated target antenna array |
| CN103245935A (en) * | 2012-02-03 | 2013-08-14 | 中国科学院电子学研究所 | Outer calibration system for high-precision SAR (Synthetic Aperture Radar) active scaler |
| CN203909628U (en) * | 2014-04-11 | 2014-10-29 | 中国华能集团清洁能源技术研究院有限公司 | Reflector tracking alignment control device |
| CN106546827A (en) * | 2016-09-30 | 2017-03-29 | 中国电子科技集团公司第二十九研究所 | A kind of Pattern measurement method of phased array direction-finding device, circuit and system |
| CN107063172A (en) * | 2017-05-25 | 2017-08-18 | 中国人民解放军空军预警学院 | A kind of external optical orientation equipment and its direction-finding method |
| EP3259945A1 (en) * | 2015-03-17 | 2017-12-27 | Huawei Technologies Co., Ltd. | Communication device, access node and methods thereof |
| CN107526056A (en) * | 2017-08-17 | 2017-12-29 | 南京长峰航天电子科技有限公司 | A kind of phase-interfer-ometer direction-finding method based on real-time channel phase alignment |
| CN107544138A (en) * | 2016-06-28 | 2018-01-05 | 莱卡地球系统公开股份有限公司 | Long-range LiDAR systems and the method for the influence moved for compensation scanning instrument |
| CN108051772A (en) * | 2017-10-25 | 2018-05-18 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Width be combined measurement incoming wave azimuth information method |
| CN109597408A (en) * | 2018-11-22 | 2019-04-09 | 东南大学 | A kind of control method and system of automatic Following Car |
| CN109631945A (en) * | 2018-12-14 | 2019-04-16 | 北京遥测技术研究所 | A kind of telemetry ground station direction Calibration Method |
| CN109696697A (en) * | 2019-02-01 | 2019-04-30 | 中国空间技术研究院 | The geoid of GNSS-R specular reflection point-deviation of plumb line modification method and system |
| CN109765532A (en) * | 2018-12-04 | 2019-05-17 | 中国科学院遥感与数字地球研究所 | Remote sensing satellite based on unmanned plane receives the long-range calibration device and method of system |
| CN110231594A (en) * | 2019-05-23 | 2019-09-13 | 北京航空航天大学 | A kind of unmanned plane interference counter system |
| CN111404621A (en) * | 2020-04-17 | 2020-07-10 | 华清瑞达（天津）科技有限公司 | Linear array rapid calibration equipment and method |
| CN111707189A (en) * | 2020-06-12 | 2020-09-25 | 天津大学 | Laser displacement sensor light beam direction calibration method based on binocular vision |
| CN112771999A (en) * | 2018-09-25 | 2021-05-07 | Asml荷兰有限公司 | Laser system for target metrology and modification in EUV light sources |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100864832B1 (en) * | 2007-04-24 | 2008-10-23 | 한국전자통신연구원 | Carmer based positioner and method for near-field antenna measurement, and near-field measurement system |
| EP2746806B1 (en) * | 2012-12-21 | 2016-10-19 | Leica Geosystems AG | Self-calibrating laser tracker and auto calibration technique |
| CN107874768B (en) * | 2016-09-30 | 2021-02-05 | 通用电气公司 | Mobile radiation imaging system and alignment method thereof |
-
2021
- 2021-07-23 CN CN202110834809.4A patent/CN113740796B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4146329A (en) * | 1977-09-14 | 1979-03-27 | The United States Of America As Represented By The Secretary Of The Navy | Autoalignment system for high power laser |
| US7064817B1 (en) * | 2003-11-04 | 2006-06-20 | Sandia Corporation | Method to determine and adjust the alignment of the transmitter and receiver fields of view of a LIDAR system |
| KR100785477B1 (en) * | 2006-10-20 | 2007-12-13 | 삼성중공업 주식회사 | Calibration method for pipe auto-alignment apparatus |
| CN102494612A (en) * | 2011-12-06 | 2012-06-13 | 南京航空航天大学 | Novel optical calibration equipment of radio-frequency simulated target antenna array |
| CN103245935A (en) * | 2012-02-03 | 2013-08-14 | 中国科学院电子学研究所 | Outer calibration system for high-precision SAR (Synthetic Aperture Radar) active scaler |
| CN203909628U (en) * | 2014-04-11 | 2014-10-29 | 中国华能集团清洁能源技术研究院有限公司 | Reflector tracking alignment control device |
| EP3259945A1 (en) * | 2015-03-17 | 2017-12-27 | Huawei Technologies Co., Ltd. | Communication device, access node and methods thereof |
| CN107544138A (en) * | 2016-06-28 | 2018-01-05 | 莱卡地球系统公开股份有限公司 | Long-range LiDAR systems and the method for the influence moved for compensation scanning instrument |
| CN106546827A (en) * | 2016-09-30 | 2017-03-29 | 中国电子科技集团公司第二十九研究所 | A kind of Pattern measurement method of phased array direction-finding device, circuit and system |
| CN107063172A (en) * | 2017-05-25 | 2017-08-18 | 中国人民解放军空军预警学院 | A kind of external optical orientation equipment and its direction-finding method |
| CN107526056A (en) * | 2017-08-17 | 2017-12-29 | 南京长峰航天电子科技有限公司 | A kind of phase-interfer-ometer direction-finding method based on real-time channel phase alignment |
| CN108051772A (en) * | 2017-10-25 | 2018-05-18 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Width be combined measurement incoming wave azimuth information method |
| CN112771999A (en) * | 2018-09-25 | 2021-05-07 | Asml荷兰有限公司 | Laser system for target metrology and modification in EUV light sources |
| CN109597408A (en) * | 2018-11-22 | 2019-04-09 | 东南大学 | A kind of control method and system of automatic Following Car |
| CN109765532A (en) * | 2018-12-04 | 2019-05-17 | 中国科学院遥感与数字地球研究所 | Remote sensing satellite based on unmanned plane receives the long-range calibration device and method of system |
| CN109631945A (en) * | 2018-12-14 | 2019-04-16 | 北京遥测技术研究所 | A kind of telemetry ground station direction Calibration Method |
| CN109696697A (en) * | 2019-02-01 | 2019-04-30 | 中国空间技术研究院 | The geoid of GNSS-R specular reflection point-deviation of plumb line modification method and system |
| CN110231594A (en) * | 2019-05-23 | 2019-09-13 | 北京航空航天大学 | A kind of unmanned plane interference counter system |
| CN111404621A (en) * | 2020-04-17 | 2020-07-10 | 华清瑞达（天津）科技有限公司 | Linear array rapid calibration equipment and method |
| CN111707189A (en) * | 2020-06-12 | 2020-09-25 | 天津大学 | Laser displacement sensor light beam direction calibration method based on binocular vision |
Non-Patent Citations (1)
| Title |
|---|
| 张祎文.干涉仪测向的校准技术研究.《中国优秀硕士学位论文全文数据库 工程科技辑》.2021,第C030-14页. * |
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