GEO target multipoint preferred short arc orbit determination method based on space-based optical observation data

Abstract

The invention discloses a GEO target multi-point preferred short arc orbit determination method based on space-based optical observation data. The GEO target multi-point preferred short arc orbit determination method is an orbit determination scheme with high robustness and high precision for GEO target short arcs of the space-based optical observation data. The specific technical scheme is as follows, the method comprises the following steps: firstly, carrying out short-arc orbit determination on angle measurement numbers of any two points based on GEO target orbit near-circle hypothesis; andthen carrying out orbit selection by utilizing the residual first-order variation of the observation data sequence, finally converting a plurality of groups of optimized orbit elements into a position vector and a speed vector, and carrying out merging processing to obtain a high-precision and steady GEO target short arc orbit determination result. The scheme is a GEO target high-stability and high-precision short-arc orbit determination method suitable for space-based optical observation data, and can be expanded and applied to the field of short-arc orbit determination of global high-orbitand low-orbit targets by space-based foundation optics and radars.

Description

technical field [0001] The invention relates to the field of spaceflight technology, in particular to a multi-point preferred short-arc orbit determination method for GEO targets based on space-based optical observation data. Background technique [0002] High-orbit satellites, or GEO satellites, have stable ground pointing and condescending large field of view observation conditions. They are widely used in global communications, reconnaissance, early warning and other fields, and are scarce strategic space resources. Ground-based optical telescopes are the backbone equipment for GEO target detection, but limited by the global deployment of ground-based equipment, they cannot effectively detect and monitor GEO targets outside the station deployment area. Space-based optical surveillance satellites have the characteristics of global inspections, and can quickly search and scan or stare at and track multiple GEO targets. If they adopt sun-synchronous orbits or small-inclinati...

AI Technical Summary

Problems solved by technology

[0003] However, due to the high speed of the satellite platform itself, the observation arc of each GEO target is short, and the convergence and accuracy of the short-arc initial orbit determination cannot be guaranteed.

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