A radar-optical hybrid dual-arc correlation orbit determination method

By combining the Lambert boundary value problem and the Gooding method, the initial orbital elements of radar and optical orbital measurement arcs are calculated, and the perturbations of long and short period terms are corrected. This achieves high-precision orbit determination based on radar-optical hybrid dual-arc correlation, solves the cataloging problem under sparse observation data, and improves the accuracy and efficiency of space target cataloging.

CN116045989BActive Publication Date: 2026-06-30WUHAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN UNIV
Filing Date
2022-12-30
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing technologies cannot effectively perform hybrid dual-arc correlation of radar and optical arcs, especially in sparse observation data scenarios, which limits the ability to catalog space targets. Furthermore, radar-radar or optical-optical dual-arc correlation methods cannot be directly applied, making it difficult to achieve accurate dual-arc correlation and orbit determination.

Method used

By acquiring radar and optical orbital measurement arcs, the initial orbital elements are calculated using the Lambert boundary value problem. Candidate solutions are then selected using the distance search method, and the Gooding method is used for iterative double-arc correlation orbit determination to correct the perturbation effects of long and short period terms and improve the observation accuracy.

Benefits of technology

It achieves high-precision orbit determination through radar-optical hybrid dual-arc correlation, breaks through the capability of rapid cataloging of space targets in sparse observation data scenarios, and improves the accuracy of dual-arc correlation and orbit determination.

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Abstract

This application relates to a radar-optical hybrid dual-arc correlation orbit determination method, comprising: acquiring radar tracking arc segments and optical tracking arc segments; calculating the initial radar orbital elements based on the radar tracking arc segments using a Lambert boundary value problem; calculating the initial optical orbital elements based on the optical tracking arc segments using a distance search method to obtain candidate solutions; determining whether the radar tracking arc segments and optical tracking arc segments could originate from the same space target; if not, the process terminates; if possible, it continues; using the radar initial orbital elements to determine the estimated semi-major axis, the candidate solutions are screened, and a position observation sequence arc segment is generated; based on the position observation sequence arc segment and the radar tracking arc segment, a Lambert boundary value problem is constructed to perform dual-arc correlation orbit determination, and the solution is obtained using the Gooding method. This invention provides a radar-optical hybrid dual-arc correlation orbit determination method that constructs a Lambert boundary value problem to solve dual-arc orbit determination, achieving excellent radar-optical hybrid dual-arc correlation accuracy and dual-arc orbit determination precision.
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