CN110717234A - Irregular layout triple angular position simulation method, system and medium - Google Patents
Irregular layout triple angular position simulation method, system and medium Download PDFInfo
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Abstract
The invention provides a method, a system and a medium for simulating an irregular layout triple angular position, which comprise the following steps: designing a calibration device: manufacturing a calibration device according to the working frequency band of the antenna array, and receiving the radiation signal of the antenna by using the manufactured calibration device; a calibration table generation step: according to the manufactured calibration device, the antenna position deviation of the antenna array is obtained through testing, an antenna position calibration table is generated, and the antenna position calibration table is led into target control software; a triple judgment step: judging the triple where the target is located again according to the actual equivalent position of the antenna by a triangular area positioning method; amplitude distribution step: and redistributing the amplitude of the triple antenna through an amplitude gravity center formula according to the position of the triple antenna where the target is located, which is obtained through redetermination. The invention can improve the radio frequency target simulation precision of the semi-physical simulation system, and has the advantages of simple realization, low manufacturing cost and easy later modification.
Description
Technical Field
The invention relates to the technical field of simulation, in particular to a method, a system and a medium for simulating an irregular layout triple corner position.
Background
In order to meet the increasing simulation requirements, simulation conditions such as microwave/millimeter wave compounding, radio frequency/infrared compounding and the like need to be realized in a darkroom, so that corresponding equipment such as a small array, a beam synthesizer and the like in the darkroom can cause the change of the darkroom environment, and the influences of multipath effect, diffraction and the like are generated. Therefore, the equivalent angular position of each antenna measured by the calibration device greatly deviates from the theoretical value, and the deviation is different at different frequency points.
Patent document CN 208477019U discloses a microwave darkroom. The antenna position error has great influence on the target simulation precision, and a method of adjusting a six-degree-of-freedom adjuster is adopted to ensure that the physical position deviation of the antenna is within an allowable range through optical calibration. However, under the condition that the physical position of the antenna is not changed, the equivalent angular position deviation of the antenna caused by the change of the darkroom environment changes along with the change of the frequency, so the traditional optical calibration method has poor effect of correcting the position error of the antenna.
Disclosure of Invention
In view of the defects in the prior art, an object of the present invention is to provide a method, a system and a medium for simulating an irregular layout triple angular position.
The invention provides an irregular layout triple angular position simulation method, which comprises the following steps:
designing a calibration device: manufacturing a calibration device according to the working frequency band of the antenna array, and receiving the radiation signal of the antenna by using the manufactured calibration device;
a calibration table generation step: according to the manufactured calibration device, the antenna position deviation of the antenna array is obtained through testing, an antenna position calibration table is generated, and the antenna position calibration table is led into target control software;
a triple judgment step: judging the triple where the target is located again according to the actual equivalent position of the antenna by a triangular area positioning method;
amplitude distribution step: and redistributing the amplitude of the triple antenna through an amplitude gravity center formula according to the position of the triple antenna where the target is located, which is obtained through redetermination.
Preferably, the calibration device comprises: the system comprises a receiving antenna, a microwave cable and a vector network analyzer;
the receiving antenna is connected with the vector network analyzer through the microwave cable.
Preferably, the receiving antennas include 4, 2 of which are disposed in the horizontal direction, and the other 2 are disposed in the elevation direction;
the vector network analyzer measures the phase difference of 2 receiving antennas arranged in the horizontal direction and the phase difference of 2 receiving antennas arranged in the pitching direction, so that the antenna position deviation in the horizontal direction and the pitching direction is obtained.
Preferably, the triple determining step includes:
and judging whether the target D is in a triangle ABC formed by the first triple: and calculating the directed areas of the triangles ABD, DBC and ADC, if the directed areas of the triangles ABD, DBC and ADC are all larger than 0 or all smaller than 0, indicating that the target D is in the first triple, otherwise, judging whether the target D is in the next triple in the same way.
According to the invention, the irregular layout triple angular position simulation system comprises:
a calibration device design module: manufacturing a calibration device according to the working frequency band of the antenna array, and receiving the radiation signal of the antenna by using the manufactured calibration device;
a calibration table generation module: according to the manufactured calibration device, the antenna position deviation of the antenna array is obtained through testing, an antenna position calibration table is generated, and the antenna position calibration table is led into target control software;
a triple determination module: judging the triple where the target is located again according to the actual equivalent position of the antenna by a triangular area positioning method;
an amplitude allocation module: and redistributing the amplitude of the triple antenna through an amplitude gravity center formula according to the position of the triple antenna where the target is located, which is obtained through redetermination.
Preferably, the calibration device comprises: the system comprises a receiving antenna, a microwave cable and a vector network analyzer;
the receiving antenna is connected with the vector network analyzer through the microwave cable.
Preferably, the receiving antennas include 4, 2 of which are disposed in the horizontal direction, and the other 2 are disposed in the elevation direction;
the vector network analyzer measures the phase difference of 2 receiving antennas arranged in the horizontal direction and the phase difference of 2 receiving antennas arranged in the pitching direction, so that the antenna position deviation in the horizontal direction and the pitching direction is obtained.
Preferably, the triple determination module includes:
and judging whether the target D is in a triangle ABC formed by the first triple: and calculating the directed areas of the triangles ABD, DBC and ADC, if the directed areas of the triangles ABD, DBC and ADC are all larger than 0 or all smaller than 0, indicating that the target D is in the first triple, otherwise, judging whether the target D is in the next triple in the same way.
According to the present invention, there is provided a computer readable storage medium storing a computer program which, when executed by a processor, implements the steps of the irregular layout triplet angular position simulation method described above.
Compared with the prior art, the invention has the following beneficial effects:
the invention can improve the radio frequency target simulation precision of the semi-physical simulation system, and has the advantages of simple realization, low manufacturing cost and easy later modification.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a flow chart of the present invention;
fig. 2 is a schematic diagram of the positioning method of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in fig. 1, the method for simulating an irregular layout triplet angular position provided by the present invention includes:
designing a calibration device: and manufacturing a calibration device according to the working frequency band of the antenna array, and receiving the radiation signal of the antenna by using the manufactured calibration device.
A calibration table generation step: and testing according to the manufactured calibration device to obtain the antenna position deviation of the antenna array, generating an antenna position calibration table, and importing the antenna position calibration table into target control software.
A triple judgment step: and re-judging the triple of the target according to the actual equivalent position of the antenna by a triangular area positioning method.
Amplitude distribution step: and redistributing the amplitude of the triple antenna through an amplitude gravity center formula according to the position of the triple antenna where the target is located, which is obtained through redetermination.
As shown in fig. 2, the solid dots are the actual positions of each antenna in the antenna array, the hollow circles are the positions of the target D, and the numbers 1 to 13 are 13 triples in which the target D may be located.
The working process is as follows:
1) the calibration device is designed and manufactured according to the working frequency band of the antenna array, and mainly comprises a receiving antenna, a microwave cable and a vector network analyzer, wherein the receiving antenna is connected with the vector network analyzer through the microwave cable. The number of the receiving antennas is 4, the number of the receiving antennas is 2 in the horizontal direction, the number of the receiving antennas is 2 in the pitching direction, and the vector network analyzer sequentially measures the phase difference of the 2 receiving antennas in the horizontal direction and the phase difference of the 2 receiving antennas in the pitching direction to obtain the position deviation of the horizontal direction and the pitching direction of the antennas.
2) The antenna position deviation is obtained through the test of the designed calibration device, then an antenna position calibration table is generated, and the table is imported into a target control computer to be used by target control software.
3) Due to the fact that the actual position of the antenna changes, the target can run into an adjacent triple from the original triple, and the triple where the target is located is judged again according to the actual equivalent position of the antenna through a triangle area positioning method. As shown in fig. 2, an object D may appear in the triples 1,2, … …,13, and to determine whether the object is in the triplet 1 by the triangle area location method, only the directional areas of the triangles ABD, DBC and ADC need to be calculated, and if the three triangle areas are all larger than 0 (if the triangle ABC is an inverted triangle, here, smaller than 0), D is indicated as being within the triangle ABC, that is, the object is within the triplet. If the target is not in the triple, judging whether the target is in the next triple by the same method;
4) and redistributing the amplitude of the triple antenna through an amplitude gravity center formula according to the position of the triple antenna where the target is located. If the position of triad antenna A, B, C is expressed in terms of azimuth and elevation angles
θA、
θB 
θCThe target position isθDLet the amplitude assigned by triad antenna A, B, C be PA、PB、PCThen, according to the amplitude gravity center formula, the following can be obtained:
PA+PB+PC＝1
PA·θA+PB·θB+PC·θC＝θD
the amplitude of the triple antenna A, B, C may be obtained by solving a system of quadratic ternary equations.
And (3) experimental comparison: in a certain semi-physical simulation system, at a certain frequency point, because a beam synthesizer is added in a darkroom, the angle measurement error is changed from 0.12 degrees to 0.42 degrees through the measurement of a calibration device, and the simulation precision of a radio frequency target is greatly reduced; after the angular position simulation method is adopted, the angle measurement error is reduced from 0.42 degrees to 0.10 degrees, the simulation precision of the radio frequency target is greatly improved, and the method is slightly better than that before a beam synthesizer is installed, and the expected target is achieved.
On the basis of the irregular layout triple angular position simulation method, the invention also provides an irregular layout triple angular position simulation system, which comprises:
a calibration device design module: manufacturing a calibration device according to the working frequency band of the antenna array, and receiving the radiation signal of the antenna by using the manufactured calibration device;
a calibration table generation module: according to the manufactured calibration device, the antenna position deviation of the antenna array is obtained through testing, an antenna position calibration table is generated, and the antenna position calibration table is led into target control software;
a triple determination module: judging the triple where the target is located again according to the actual equivalent position of the antenna by a triangular area positioning method;
an amplitude allocation module: and redistributing the amplitude of the triple antenna through an amplitude gravity center formula according to the position of the triple antenna where the target is located, which is obtained through redetermination.
The present invention also provides a computer readable storage medium storing a computer program which, when executed by a processor, implements the steps of the irregular layout triplet angular position simulation method described above.
Those skilled in the art will appreciate that, in addition to implementing the system and its various devices, modules, units provided by the present invention as pure computer readable program code, the system and its various devices, modules, units provided by the present invention can be fully implemented by logically programming method steps in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system and various devices, modules and units thereof provided by the invention can be regarded as a hardware component, and the devices, modules and units included in the system for realizing various functions can also be regarded as structures in the hardware component; means, modules, units for performing the various functions may also be regarded as structures within both software modules and hardware components for performing the method.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (9)
1. A method for modeling an irregular layout triplet angular position, comprising:
designing a calibration device: manufacturing a calibration device according to the working frequency band of the antenna array, and receiving the radiation signal of the antenna by using the manufactured calibration device;
a calibration table generation step: according to the manufactured calibration device, the antenna position deviation of the antenna array is obtained through testing, an antenna position calibration table is generated, and the antenna position calibration table is led into target control software;
a triple judgment step: judging the triple where the target is located again according to the actual equivalent position of the antenna by a triangular area positioning method;
amplitude distribution step: and redistributing the amplitude of the triple antenna through an amplitude gravity center formula according to the position of the triple antenna where the target is located, which is obtained through redetermination.
2. The method of irregular layout triplet angular position simulation of claim 1 wherein the calibration means comprises: the system comprises a receiving antenna, a microwave cable and a vector network analyzer;
the receiving antenna is connected with the vector network analyzer through the microwave cable.
3. The method of claim 2, wherein the receiving antennas comprise 4, 2 of which are disposed in a horizontal direction and the other 2 of which are disposed in a vertical direction;
the vector network analyzer measures the phase difference of 2 receiving antennas arranged in the horizontal direction and the phase difference of 2 receiving antennas arranged in the pitching direction, so that the antenna position deviation in the horizontal direction and the pitching direction is obtained.
4. The method of irregular layout triplet angular position simulation of claim 3, wherein the triplet decision step comprises:
and judging whether the target D is in a triangle ABC formed by the first triple: and calculating the directed areas of the triangles ABD, DBC and ADC, if the directed areas of the triangles ABD, DBC and ADC are all larger than 0 or all smaller than 0, indicating that the target D is in the first triple, otherwise, judging whether the target D is in the next triple in the same way.
5. An irregular layout triplet angular position simulation system comprising:
a calibration device design module: manufacturing a calibration device according to the working frequency band of the antenna array, and receiving the radiation signal of the antenna by using the manufactured calibration device;
a calibration table generation module: according to the manufactured calibration device, the antenna position deviation of the antenna array is obtained through testing, an antenna position calibration table is generated, and the antenna position calibration table is led into target control software;
a triple determination module: judging the triple where the target is located again according to the actual equivalent position of the antenna by a triangular area positioning method;
an amplitude allocation module: and redistributing the amplitude of the triple antenna through an amplitude gravity center formula according to the position of the triple antenna where the target is located, which is obtained through redetermination.
6. The system according to claim 5, wherein the calibration means comprises: the system comprises a receiving antenna, a microwave cable and a vector network analyzer;
the receiving antenna is connected with the vector network analyzer through the microwave cable.
7. The system according to claim 6, wherein the receiving antennas comprise 4, 2 of which are disposed in a horizontal direction and the other 2 are disposed in a vertical direction;
the vector network analyzer measures the phase difference of 2 receiving antennas arranged in the horizontal direction and the phase difference of 2 receiving antennas arranged in the pitching direction, so that the antenna position deviation in the horizontal direction and the pitching direction is obtained.
8. The irregular layout triplet angular position simulation system of claim 7 wherein the triplet decision module comprises:
and judging whether the target D is in a triangle ABC formed by the first triple: and calculating the directed areas of the triangles ABD, DBC and ADC, if the directed areas of the triangles ABD, DBC and ADC are all larger than 0 or all smaller than 0, indicating that the target D is in the first triple, otherwise, judging whether the target D is in the next triple in the same way.
9. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the steps of the irregular layout triplet angular position simulation method of any of claims 1 to 4.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111562445A (en) * | 2020-05-06 | 2020-08-21 | 中国人民解放军63892部队 | Real-time monitoring method for angular simulation precision of radio frequency simulation test system |
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| CN111562445A (en) * | 2020-05-06 | 2020-08-21 | 中国人民解放军63892部队 | Real-time monitoring method for angular simulation precision of radio frequency simulation test system |
| CN111562445B (en) * | 2020-05-06 | 2022-08-19 | 中国人民解放军63892部队 | Real-time monitoring method for angular simulation precision of radio frequency simulation test system |
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