Angles-only relative navigation and closed-loop guidance for spacecraft proximity operations

Jianjun Luo, Baichun Gong, Jianping Yuan, Zhaofei Zhang

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

This research investigates angles-only relative navigation and closed-loop guidance algorithm for spacecraft mid-range orbital proximity operations when the orbital maneuver allows for range observability. Emphasis and contribution are on developing angles-only relative navigation and guidance coupling algorithm in the context of Clohessy–Wiltshire and Tschauner–Hempel dynamics. Observability analysis of the relative state is done and the general mathematical expression of the observable condition is obtained. Coupling relationship between the angles-only relative navigation and the multi-pulse sliding guidance is discussed and its analytic expression is derived. A novel closed-loop guidance scheme is designed based on the coupling relationship and unscented kalman filter. Two-body Monte Carlo simulations are conducted to evaluate the validity and test the performance of the closed-loop system. The sensitivities of the navigation and guidance accuracy to the line-of-sight angles accuracy, initial separation and initial state uncertainties, number of pulses, and dynamics are presented and discussed.

Original languageEnglish
Pages (from-to)91-106
Number of pages16
JournalActa Astronautica
Volume128
DOIs
StatePublished - 1 Nov 2016

Keywords

  • Angles-only
  • Autonomous rendezvous
  • Guidance
  • Observability analysis
  • Relative navigation

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