Mars entry guidance based on an adaptive reference drag profile

The conventional Mars entry tracks a fixed reference drag profile (FRDP). To improve the landing precision, a novel guidance approach that utilizes an adaptive reference drag profile (ARDP) is presented. The entry flight is divided into two phases. For each phase, a family of drag profiles correspon...

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Veröffentlicht in:Advances in space research Jg. 60; H. 3; S. 692 - 701
Hauptverfasser: Liang, Zixuan, Duan, Guangfei, Ren, Zhang
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Elsevier Ltd 01.08.2017
Schlagworte:
Drag tracking
Feedback linearization
Mars entry
Precision guidance
Trajectory planning
Mars entry
Trajectory planning
Feedback linearization
Precision guidance
Drag tracking
ISSN:0273-1177, 1879-1948
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Zusammenfassung:The conventional Mars entry tracks a fixed reference drag profile (FRDP). To improve the landing precision, a novel guidance approach that utilizes an adaptive reference drag profile (ARDP) is presented. The entry flight is divided into two phases. For each phase, a family of drag profiles corresponding to various trajectory lengths is planned. Two update windows are investigated for the reference drag profile. At each window, the ARDP is selected online from the profile database according to the actual range-to-go. The tracking law for the selected drag profile is designed based on the feedback linearization. Guidance approaches using the ARDP and the FRDP are then tested and compared. Simulation results demonstrate that the proposed ARDP approach achieves much higher guidance precision than the conventional FRDP approach.
ISSN:0273-1177
1879-1948
DOI:10.1016/j.asr.2017.04.027