Space target high-precision on-orbit positioning method based on angle measurement and distance measurement information

Abstract

The invention discloses a space target high-precision on-orbit positioning method based on angle measurement and distance measurement information. An image of space debris is shot through a visible light camera; distance information of the space debris is obtained through a microwave distance measurement load; angle information of the space debris relative to a satellite is extracted through an optical recognition algorithm; and distance information of the space debris relative to the satellite is obtained through a radar pulse distance measurement model. The angle information and the distanceinformation of the space debris relative to the satellite are known, and a high-precision positioning result of the space debris can be obtained through a data fusion model. The arc segments of the satellite on-orbit tracking space debris can be reduced; the high-precision positioning of the space debris can be realized in combination with a calculation method convenient for software processing through the angle information and the distance information obtained through measurement in a relatively short tracking time; and the high-precision positioning of a space target can be realized withina space-based observation time from tens of seconds to a few minutes.

Description

technical field [0001] The invention relates to a high-precision on-orbit positioning method for a space target based on angle measurement and distance measurement information, and belongs to the technical field of space on-orbit positioning. Background technique [0002] Efforts have been made to ascertain the amount and distribution of space debris since the hazards of the large amount of space debris were known. This requires knowing the position and changes of the space debris on the orbit, and determining the orbit of the space debris. The distribution of space debris in space is extremely uneven, and it is difficult to be tracked throughout the entire process. How to accurately obtain the orbital parameters of space debris has always been a challenge. a puzzle. Space debris can be observed through ground-based radar or optical telescopes, and the observation data can be calculated to obtain the position information of space debris, but more space debris is difficult t...

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is: to overcome the problems that space debris is difficult to be found by the ground-based monitoring system and the accuracy of on-orbit short-arc orbit determination is not high, and to provide a high-precision on-orbit positioning method for space targets based on angle measurement and ranging information, It can take images of space debris through a visible light camera, and at the same time obtain the distance information of space debris through the microwave ranging payload, extract the angle information of space debris relative to the satellite through the optical recognition algorithm, and obtain the distance information of space debris relative to the satellite through the radar pulse ranging model. According to the angle information and distance information of the space debris relative to the satellite, the high-precision positioning result of the space debris can be obtained through the conventional data fusion model

Images