Method and system for generating spacecraft collision avoidance strategy

Abstract

The present invention relates to the technical field of space object collision avoidance, and provides a method and system for generating a spacecraft collision avoidance strategy. The method includes: obtaining the spacecraft and all space objects that need to be avoided; obtaining the first collision warning between the spacecraft and all space objects ; Determine whether the spacecraft has a collision risk, and if so, determine the orbital change time of the spacecraft and the range of orbital control quantities; determine the orbital interval and construct multiple orbital control quantities; obtain spacecraft with different orbital control quantities and all space objects The second collision early warning; determine whether there is a control amount range window length without collision risk greater than or equal to the third specified threshold, if it exists, select the optimal orbit control amount; if it does not exist, adjust the range of the orbit control amount , obtain the second collision warning again until the optimal orbital control amount can be selected. The method and system of the scheme can determine the optimal control strategy to ensure the safety of the spacecraft.

Description

technical field [0001] The present invention relates to the technical field of space target collision avoidance, in particular to a method and system for generating a collision avoidance strategy for a spacecraft. Background technique [0002] With the continuous development of human spaceflight activities, the spatial density of space debris has threatened the safety of spacecraft, especially in low-Earth orbit, the density of debris is even greater, and the number is still increasing rapidly, resulting in spacecraft being hit by space debris Events happen from time to time. The impact of space debris with larger size and mass can change the surface properties of the spacecraft, damage or fail components, and even cause the spacecraft to fail. [0003] Spacecraft collision avoidance refers to an active protection measure taken by spacecraft for catalogued space debris larger than 10 cm. Both NASA and the European Space Agency (ESA) have successfully used orbital maneuver ...

AI Technical Summary

Problems solved by technology

In the generation of avoidance strategies, due to the limitation of CPU computing power, the generation speed of avoidance strategies is slow, resulting in imprecise grouping of track control quantities, which is prone to omission. There is a certain deviation in the orbit control, that is, there is a difference between the reality and the theory after the orbit control, resulting in the collision risk of the spacecraft after the orbit control evasion

Images