Straight line track correction method in antenna pattern measurement

Abstract

The invention provides a linear track correction method in antenna pattern measurement. The method comprises the following steps: planning a linear track perpendicular to the direction of a center normal of a tested antenna, planning a plurality of test points on the linear track, displacing a reference antenna on the plurality of test points in sequence, recording a rotating angle of the reference antenna relative to the tested antenna after the reference antenna is displaced from the first test point to the second test point along the linear track, measuring a first distance and a second distance between the reference antenna and the tested antenna before and after displacement, calculating a deviation angle of the displaced reference antenna deviating from the linear track according to calculation results and a third distance between the reference antenna and the first test point, calculating a fifth distance between the reference antenna and the third test point and a correction angle of the reference antenna according to the deviation angle, the third distance and a fourth distance between the first test point and the third test point and finally controlling the displacement of the reference antenna according to the fifth distance and the correction angle. According to the linear track correction method provided by the invention, the linear displacement direction of the reference antenna can be corrected.

Description

technical field [0001] The invention relates to the technical field of antenna measurement, in particular to a straight line trajectory correction method in antenna pattern measurement. Background technique [0002] As a converter of space radiated electromagnetic wave energy and transmission line guided wave, antennas are widely used in systems such as wireless communication, broadcasting, television, radar, navigation, remote sensing, radio astronomy and electronic countermeasures. The electrical parameter performance of the antenna, such as standing wave ratio, gain pattern, phase pattern, etc., is directly related to the overall performance of the system. Accurately and quickly measuring the gain pattern of the antenna is of great reference and help to the research and development, debugging and production of the antenna. [0003] The traditional antenna gain pattern measurement method is to place the antenna under test on a turntable that can adjust the pitch angle and...

AI Technical Summary

Problems solved by technology

However, in some practical applications, there are often some special circumstances that cause the antenna under test to be unable to rotate at will, making the traditional measurement method unusable

[0004] In order to solve the problem that the antenna under test cannot be rotated at will, a method is proposed to set the reference antenna at a reasonable position from the antenna under test, and control the displacement of the reference antenna on the specified straight track to complete the measurement of the antenna pattern under test.

However, the current implementation mainly relies on the human eye to complete the positioning, and then manually controls the reference antenna for linear displacement. Therefore, the measurement process is inefficient, time-consuming, and affected by the error of human eye positioning. When the linear displacement direction of the reference antenna When deviating from a straight line trajectory, it is impossible or difficult to correct the straight line displacement direction of the reference antenna

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