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Far-field parameter calibration device and calibration method for antenna

A parameter calibration and antenna technology, which is applied in the antenna far-field parameter calibration device and the field of calibration, can solve the problems of poor test accuracy, large calibration errors, and low work efficiency, and achieve a large test frequency range, wide adaptability, and error elimination. Effect

Active Publication Date: 2012-12-12
湖北航天技术研究院计量测试技术研究所
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AI Technical Summary

Problems solved by technology

At present, the calibration of the antenna usually adopts the electromagnetic compatibility antenna calibration method. The calibration parameters of this method are incomplete, the calibration error is large, and it is not suitable for the actual use environment of the missile antenna.
In addition, during the test process, the data acquisition and the calculation of the drawing parameters of the direction map are mostly manual operations, which has low work efficiency, poor test accuracy, and takes a long time

Method used

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  • Far-field parameter calibration device and calibration method for antenna
  • Far-field parameter calibration device and calibration method for antenna
  • Far-field parameter calibration device and calibration method for antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Calibration objects: 3 ETS 3115 antennas, numbered 6262#, 6663#, 6675#.

[0050] An antenna far-field parameter calibration device, comprising a receiver 1, a computer 2, a microwave anechoic chamber 3, a receiving antenna 4, a turntable 5, a transmitting antenna 6, a bracket 7 and a signal generator 8, the receiving antenna 4, the turntable 5, the transmitting The antenna 6 and the bracket 7 are placed in the microwave darkroom 3, the receiving antenna 4 is set on the turntable 5 and placed on the longitudinal axis of the darkroom space, the transmitting antenna 6 is set on the bracket 7 and placed on the longitudinal axis of the darkroom space, and the microwave darkroom 3 It is a cuboid, and the six sides of the microwave anechoic chamber 3 are paved with absorbing materials. The axial dimension of the microwave anechoic chamber 3 meets the far-field distance requirements of the receiving and transmitting antennas, and the cross-sectional size of the microwave anechoi...

Embodiment 2

[0091] Calibration object: 3 Xibao XB-WDB-0.4-3.5N antennas, number: 110321201#, 11032102#, 11032103#.

[0092] Calibration device: same as embodiment one

[0093] Using the above-mentioned antenna far-field parameter calibration device, the antenna far-field parameter is calibrated by the following method, and the steps include:

[0094] S1. Accurately locate the zero position

[0095] The horizontal center and vertical center of the receiving and transmitting antennas are respectively determined by a laser line throwing instrument. At the same time, the distance between the receiving and transmitting antennas is tested by a laser rangefinder to ensure that the mechanical zero position of the receiving and transmitting antennas is accurately positioned. The rolling axis of the turntable scans point by point to determine the electrical zero position of the antenna, and eliminate the error caused by the inconsistency between the mechanical zero position and the electrical zero...

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Abstract

The invention relates to a far-field parameter calibration device and a far-field parameter calibration method for an antenna. The calibration device comprises a receiver, a computer, a microwave anechoic chamber, a receiving antenna, a turntable, a transmission antenna, a bracket and a signal generator, and is characterized in that the receiving antenna, the turntable, the transmission antenna and the bracket are arranged in the microwave anechoic chamber; the receiving antenna is arranged on the turntable, and is arranged on the spatial longitudinal axis of the anechoic chamber; the transmission antenna is arranged on the bracket, and is arranged on the spatial longitudinal axis of the anechoic chamber; the receiver is in communication connection with the computer; the signal output end of the computer is connected with the turntable and the signal input end of the signal generator respectively; the signal output end of the signal generator is connected with the signal input end of the transmission antenna; and the signal output end of the receiving antenna is connected with the signal input end of the receiver. According to the device and the method, electrical performance parameters of the antenna can be measured accurately, quickly and efficiently in real time. The device and the method are high in applicability and wide in frequency calibration range, and the measurement synthesis uncertainty can reach 0.21 to 0.49dB.

Description

technical field [0001] The invention relates to a parameter calibration device and a calibration method, in particular to an antenna far-field parameter calibration device and a calibration method. Background technique [0002] In order to ensure the electrical performance of the antenna, in addition to strict theoretical design and excellent production, it must be corrected based on actual test data. At present, the antenna calibration method usually adopts the electromagnetic compatibility antenna calibration method. The calibration parameters of this method are incomplete, the calibration error is large, and it is not suitable for the actual use environment of the missile antenna. In addition, during the test process, the data acquisition and the calculation of the drawing parameters of the direction map are mostly manual operations, which has low work efficiency, poor test accuracy, and takes a long time. Therefore, it is necessary to design an antenna far-field paramet...

Claims

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Application Information

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IPC IPC(8): G01R29/10G01R31/00
Inventor 罗喜明吴传昕田春华黄品芳毛凡李雷杨小朋胡小洲
Owner 湖北航天技术研究院计量测试技术研究所
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