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An antenna phase center calibration method

A technology of antenna phase center and calibration method, applied in the field of communication, to meet the requirements of measurement guarantee and achieve the effect of accurate calibration

Active Publication Date: 2020-12-04
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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  • Abstract
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Problems solved by technology

[0007] In view of this, in order to solve the problem of receiving antenna phase center calibration, an embodiment of the present application provides an antenna phase center calibration method

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  • An antenna phase center calibration method
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Embodiment Construction

[0017] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0018] figure 1 It is a schematic diagram of an antenna calibration device, including a vector network analyzer 101, an attenuator 102, a transmitting antenna 103, a receiving antenna 104, an antenna turntable 105, and an attenuator 2 106, and the vector network analyzer is used to perform the magnitude and phase Measurement, the output end of the ve...

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Abstract

The invention discloses an antenna phase center calibration method, and solves problems in antenna phase center calibration. The method comprises the following steps that the pitching freedom degree of a reception antenna is increased, so that the reception antenna can rotate within the pitching angle of -90degree to +90degree; the antenna is rotated from -90degree to +90degree in the horizontal plane along the clockwise direction and from -90degree to +90degree in the vertical plane along the pitching direction; the rotation angle of the reception in the horizontal and vertical directions aswell as amplitude and phase information in the rotation angle is recorded; the amplitudes in different angles are normalized with the amplitude in the 0 degree, and the half-power beam width in the horizontal and vertical directions after normalization is recorded; and a coordinate of the phase center of the reception antenna is calculated. The method can be used to calibrate the antenna phase center rapidly and accurately, and the requirement for antenna metering guarantee can be met.

Description

technical field [0001] The present application relates to the field of communications, and in particular to a method for calibrating antenna phase centers based on numerical analysis. Background technique [0002] The phase center is one of the important indicators of the antenna. Many devices or systems measure distance or positioning through the antenna to send and receive electromagnetic waves. The phase center measurement is related to the accuracy of positioning. [0003] The QJ1729A standard stipulates the phase center calibration method of aerospace antennas. The antenna calibration is carried out in a microwave anechoic room. The transmitting antenna and the receiving antenna are set up on the antenna bracket coaxially, and the distance between the transmitting antenna and the receiving antenna meets the far-field conditions. For the array antenna using the QJ1729A standard to measure the phase center, there are the following problems: [0004] Each time the moving ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R29/10
CPCG01R29/10
Inventor 刘星汛齐万泉黄承祖黄建领白伟
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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