Monitoring method and system for on-orbit spacecraft suffering from space debris collision

Abstract

The invention discloses a monitoring method and a system for an on-orbit spacecraft suffering from space debris collision. The monitoring method comprises the following steps that corresponding target ultrasonic signals are obtained through a plurality of ultrasonic sensors, and then the corresponding target ultrasonic signals are subjected to amplification and gain treatment and ultrasonic monitoring data is obtained; when any of the ultrasonic monitoring data is judged to exceed a presupposition trigger threshold, specific ultrasonic monitoring data is gathered and stored; the specific ultrasonic monitoring data is the ultrasonic monitoring data of all the ultrasonic sensors in the presupposition trigger duration; when all the ultrasonic monitoring data is judged not to reach the presupposition trigger threshold, the stored specific ultrasonic monitoring data is read; and analysis and calculation are conducted according to the specific ultrasonic monitoring data, then the collision position and the collision strength of the on-orbit spacecraft are obtained. According to the method and the system for the on-orbit spacecraft suffering from the space debris collision, acoustic emission monitoring and location produced by a space debris collision structure are achieved through a passive ultrasonic monitoring form.

Description

technical field [0001] The invention relates to the technical field of satellite communication, and specifically relates to a method and system for monitoring an on-orbit spacecraft impacted by space debris. Background technique [0002] With the intensification of human space activities, the space debris is increasing and the space environment is deteriorating day by day. Due to the increase of space debris, it is often easy for space debris to hit on-orbit spacecraft, and its impact on the safe operation of on-orbit spacecraft and The life safety of astronauts poses a serious threat and becomes an important risk factor that cannot be ignored. Therefore, it is necessary to monitor the impact of space debris on orbiting spacecraft to assess the damage and structural health of spacecraft in orbit. Provide data support for on-orbit maintenance. [0003] At present, the existing spacecraft structural health monitoring methods usually use active vibration sensor data analysis o...

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Problems solved by technology

[0003] At present, the existing spacecraft structural health monitoring methods usually use active vibration sensor data analysis or ultrasonic active flaw detection. Although ultrasonic active flaw detection has been successfully applied to non-destructive testing methods in some industrial and The method needs to actively emit ultrasonic waves, which is only suitable for active flaw detection, but cannot be applied to unattended spacecraft structural damage monitoring, and cannot use the acoustic emission signal itself generated by space debris hitting the structure for passive impact monitoring and positioning

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