Optimal request algorithm for attitude determination

D. Choukroun, I. Y. Bar-Itzhack, Y. Oshman

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

10 Scopus citations

Abstract

REQUEST is a recursive QUEST algorithm for least-squares fitting of the attitude quaternion of a spacecraft to vector measurements. REQUEST relies on the ability to perfectly propagate the so called K-matrix and is therefore suboptimal when filtering propagation noises. The algorithm presented here provides an optimized REQUEST routine, which optimally filters measurement as well as propagation noises. The solution approach is based on state space modeling of the K-matrix system and uses Kalman filtering techniques in order to estimate the optimal K-matrix. Then, the attitude quaternion is extracted from the estimated K-matrix. A simulation study is used to demonstrate the performance of the algorithm.

Original languageEnglish
Title of host publicationAIAA Guidance, Navigation, and Control Conference and Exhibit
StatePublished - 1 Dec 2001
Externally publishedYes
EventAIAA Guidance, Navigation, and Control Conference and Exhibit 2001 - Montreal, QC, Canada
Duration: 6 Aug 20019 Aug 2001

Publication series

NameAIAA Guidance, Navigation, and Control Conference and Exhibit

Conference

ConferenceAIAA Guidance, Navigation, and Control Conference and Exhibit 2001
Country/TerritoryCanada
CityMontreal, QC
Period6/08/019/08/01

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