An image-based multi-mode autonomous orbit determination method for remote sensing satellites

Abstract

The invention discloses an image-based remote sensing satellite multi-mode autonomous orbit determination method, comprising the following steps: step 1: preprocessing the remote sensing image; step 2: combining the preprocessed remote sensing image with the ground feature point library and the previous Match the remote sensing images at each moment to extract the orbit determination feature points; Step 3: Establish a multi-mode orbit determination measurement equation based on monocular vision and multi-view geometric principles; Step 4: Establish an orbit determination state equation based on the orbit dynamics model; 5: Based on the orbit determination measurement equation and the orbit determination state equation, high-precision real-time optimal estimation of the orbit determination state quantity is carried out through the filtering algorithm. This invention solves the problems of poor autonomy and low orbit determination accuracy of remote sensing satellites. According to monocular vision and multi-view geometric principles, an image-based multi-mode autonomous orbit determination observation model is constructed, thereby realizing the accuracy of remote sensing satellites’ autonomous orbit determination. and increased reliability and increased autonomy.

Description

technical field [0001] The invention relates to the technical field of satellite orbit determination, in particular to an image-based multi-mode autonomous orbit determination method for remote sensing satellites. Background technique [0002] The continuous development of human space activities puts forward higher requirements for satellite orbit determination technology. At present, the navigation technology for satellites can be divided into three categories, ground-based navigation based on ground facilities, space-based navigation based on space navigation constellations, and autonomous navigation relying on the satellite's own load. Among these three types of technologies, ground-based and space-based navigation technologies play a vital role in various space missions today. Using the telemetry data of the ground measurement and control station or the measurement data of the GPS navigation constellation, combined with the high-precision orbit dynamics model, the orbit...

AI Technical Summary

Problems solved by technology

This system aims to solve the problems of poor autonomy and low orbit determination accuracy of remote sensing satellites. Based on monocular vision and multi-view geometric principles, an image-based multi-mode autonomous orbit determination observation model is constructed to achieve the accuracy of remote sensing satellites’ autonomous orbit determination. and increased reliability and increased autonomy

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