This study proposes a geometric-based method of providing regional target visibility from a satellite considering the J2 perturbation. First, the basic mathematical model is introduced followed by the field-element equations for ground-point visibility analysis and envelope equations of a family of curves. Then, the concept of a regional-field-mapping envelope and its subset baseline field-mapping envelope are presented for calculating visible intervals. The envelopes transform the complex problem of calculating a visible interval into a simple intersection problem for a group of parallel lines representing a satellite's trajectory and the regional-field-mapping envelope. Based on the analytical partial differential of the field-element equations, the baseline-field-mapping envelope for smooth and nonsmooth field of views can be rapidly calculated where the regional-field-mapping envelope can be obtained by splicing the baseline-field-mapping envelopes. The simulation results show that the proposed method is rapid, accurate, and intuitive, demonstrating its wide applications for regional-target coverage analysis.
Geometric-Based Method for Regional-Target Coverage Analysis
IEEE Transactions on Aerospace and Electronic Systems ; 59 , 3 ; 2252-2265
2023-06-01
3372927 byte
Article (Journal)
Electronic Resource
English
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