A dual-mode integrated space-based space debris detection system with full airspace coverage

Abstract

Disclosed is a full-airspace-coverage dual-mode integrated space-based space debris detection system which comprises an optical system, a light splitting element, a detector array and refrigerating systems. The detector array comprises a visible light detector array and an infrared detector array, and the optical system and the infrared detector array are provided with the refrigerating systems respectively. Visible light reflected by space debris targets and infrared light radiated by the space debris targets are collected by the optical system, and the light splitting element divides the visible light and the infrared light into two independent branches which reach the visible detector array and the infrared detector array respectively. The refrigerating systems refrigerate the optical system and the infrared detector array respectively. When the detection system detects a space debris layer outside an earth shadow area, the visible light detector array performs imaging; when the detection system detects a space debris layer covered by the earth shadow area, the infrared detector array performs imaging. The visible light detector array and the infrared detector array works in a time-sharing manner, so that full airspace coverage of space debris detection is realized.

Description

technical field [0001] The invention relates to a space debris detection system. Background technique [0002] At present, with the increasing frequency of human spaceflight activities, various spaceflight activities have produced a large amount of space debris. The relative speed of space debris can reach 15km / s, and it has huge kinetic energy. Space debris larger than 1cm can seriously damage the spacecraft and pose a serious threat to the safe operation of the spacecraft in orbit. [0003] Space debris detection is to use remote sensing or direct contact to dynamically monitor the space debris environment and track and catalog large-scale space debris, so as to provide warning information for the safe operation of spacecraft in orbit. Space debris detection is currently an effective way to prevent spacecraft from colliding with space debris. In addition, in order to protect the spacecraft from being hit by space debris, space debris detection is required to have full-ti...

AI Technical Summary

Problems solved by technology

However, there is a shadow area on the earth, and the space debris layer covered by this area (referring to the area with a high density of space debris, generally the area with an orbital altitude within the range of 300-2000 km) has no sunlight, such as figure 1 As shown, the space-based visible light detection system cannot detect space debris covered by the shadow area, so it cannot achieve full airspace coverage for space debris detection

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