Metal redundancy detection method and device for satellite-borne waveguide antenna

Abstract

The invention relates to a metal redundancy detection method for a satellite-borne waveguide antenna. The method comprises the following steps: building an antenna standing wave test and vibration system; the method comprises the following steps: installing a tested antenna or an antenna array combination, calibrating a test system, carrying out first standing wave electrical testing on the antenna in a static state, and collecting standing wave data and curves in a corresponding frequency band; setting vibration condition parameters of the three-dimensional vibration table, and starting the vibration table to vibrate the antenna; carrying out second standing wave electrical logging on the tested antenna in a static state after the vibration is stopped, and collecting standing wave data and a curve in a corresponding frequency band; and analyzing and interpreting the standing wave data of the antenna by comparing the two test curves, and judging the condition of the metal redundancy in the antenna. The invention further provides a metal redundancy detection device for the spaceborne waveguide antenna. According to the invention, the metal redundancy in the antenna and in the blind area which cannot be detected by the conventional microscopic examination can be detected, and the antenna containing the metal redundancy which is not detected can be screened out.

Description

technical field [0001] The present invention relates to the technical field of antennas, and in particular, to a method and device for detecting metal excesses for satellite carrier antennas. Background technique [0002] As the requirements for light weight and integration of spaceborne antennas increase, their internal structures also become complex. Antenna manufacturing involves many process links, and excess metal debris and rubber particles are easily generated during the development process. The movement of the redundant objects inside the antenna is relatively random, and the metal redundant objects may cause safety hazards to the electrical system and pose a threat to the reliability of the on-board electronic system. Although facing the problem of excess objects, relevant measures have been taken from the source (design, production, manufacturing and debugging, etc.), but the generation of excess objects cannot be completely avoided. It is necessary to screen for ...

AI Technical Summary

Problems solved by technology

However, in the whole process of the detection of redundant objects, the mechanical device must provide a certain acceleration to the load to achieve the optimal effect. If the acceleration is too low, the redundant objects cannot be activated for detection, which has a great impact on the life of the antenna under test. big impact

[0010] The research on redundant object detection of spaceborne stand-alone aircraft has just started. At present, no new research progress has been seen in the detection method of redundant objects in antennas. Traditional methods are still basically used: visual inspection, shaking and listening methods, X-ray detection methods, etc.

In addition, with the above method, it is difficult to inspect the redundant objects after they enter the antenna, especially the complex structural cavity inside the antenna. New detection scheme

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