Remote sensing satellite multi-satellite combined converse orbit and attitude determination method

Abstract

A remote sensing satellite multi-satellite combined converse orbit and attitude determination method is a method which performs converse orbit and attitude determination by using ground control information so as to obtain orbit and attitude data of a domestic remote sensing satellite with higher precision. The method assumes that control information, connection points, and pass points required bymulti-satellite converse orbit and attitude determination are obtained already, and are converted into a format recognized by a multi-satellite converse orbit and attitude determination system. Firstly constant term offset errors of the whole orbit is compensated by a system error compensation model, that is, each exterior orientation element has a system error compensation parameter. Therefore, the whole orbit offset errors can be eliminated, and then errors between orbits and inside orbits are eliminated by using an orientation sheet model. The advantage of the invention is that the method can give full play to the functions of existing geographic information so as to perform combined converse orbit and attitude determination of multiple domestic remote sensing satellite data, and can significantly improve the positioning precision for ground of domestic remote sensing satellites.

Description

technical field [0001] The invention relates to an orbit and attitude determination method, in particular to a remote sensing satellite multi-satellite joint reverse orbit and attitude determination method. Background technique [0002] Low-orbit satellites are the most important platform systems in high-precision earth observation systems, and are widely used in navigation and positioning, resource remote sensing, atmospheric detection, ocean, gravity field, military and other important fields. For example, remote sensing satellites such as SPOT 5, IRS-P5, IKONOS, QuickBird, GeoEye, WorldView, CBERS-02B, TH-1, ocean altimetry satellites such as TOPEX and Jason-1, laser altimetry satellites such as ICESAT, gravity such as CHAMP and GRACE satellite etc. The high-precision orbit determination and attitude determination technology of medium and low orbit satellites is a necessary prerequisite for the application of high-level satellites. The accuracy of satellite orbit and att...

AI Technical Summary

Problems solved by technology

my country's remote sensing satellites use space-borne GNSS and star sensors as the main means of orbit and attitude determination, but the accuracy of orbit and attitude determination is severely restricted by the technical level of hardware such as space-borne GNSS receivers, star sensors, and satellite control devices. It has become an important factor restricting the application of remote sensing satellites and the substantial improvement of service levels

For remote sensing satellites that currently exist or whose hardware level cannot achieve substantial breakthroughs in the short term (such as Ziyuan No. 1 02B / 02C, TH No. 1, Ziyuan No. The results of orbit and attitude determination with GNSS and star sensors cannot meet the needs of high-precision remote sensing applications, so it is urgent to seek new breakthroughs in orbit and attitude determination modes and methods

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