Observability analysis of Mars entry integrated navigation

Liansheng Wang; Yuanqing Xia

doi:10.1016/j.asr.2015.05.016

Observability analysis of Mars entry integrated navigation

Liansheng Wang, Yuanqing Xia^*

^*Corresponding author for this work

School of Automation

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

This paper studies three schemes of Mars entry navigation: inertial measurement unit (IMU) based dead reckoning (DR), IMU/orbiter based integrated navigation, and IMU/orbiter/Mars surface beacon (MSB) based integrated navigation. We demonstrate through simulations that first scheme, IMU based DR, produces substantially large state estimation errors. Although these errors are reduced by adding two Mars orbiters, the system is only barely observable. However, by adding two MSBs in above configuration, the position and velocity estimation errors are reduced to the scope of 10 m and 0.5 m/s respectively and the navigation system becomes completely observable. Finally, the estimability of states is investigated; it is observed that velocity variables or velocity variables linear combinations can be estimated better than position variables.

Original language	English
Pages (from-to)	952-963
Number of pages	12
Journal	Advances in Space Research
Volume	56
Issue number	5
DOIs	https://doi.org/10.1016/j.asr.2015.05.016
Publication status	Published - 1 Sept 2015

Keywords

Condition number
Estimability
Fisher information matrix
Mars entry integrated navigation schemes
Observability

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10.1016/j.asr.2015.05.016

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title = "Observability analysis of Mars entry integrated navigation",

abstract = "This paper studies three schemes of Mars entry navigation: inertial measurement unit (IMU) based dead reckoning (DR), IMU/orbiter based integrated navigation, and IMU/orbiter/Mars surface beacon (MSB) based integrated navigation. We demonstrate through simulations that first scheme, IMU based DR, produces substantially large state estimation errors. Although these errors are reduced by adding two Mars orbiters, the system is only barely observable. However, by adding two MSBs in above configuration, the position and velocity estimation errors are reduced to the scope of 10 m and 0.5 m/s respectively and the navigation system becomes completely observable. Finally, the estimability of states is investigated; it is observed that velocity variables or velocity variables linear combinations can be estimated better than position variables.",

keywords = "Condition number, Estimability, Fisher information matrix, Mars entry integrated navigation schemes, Observability",

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AU - Wang, Liansheng

AU - Xia, Yuanqing

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N2 - This paper studies three schemes of Mars entry navigation: inertial measurement unit (IMU) based dead reckoning (DR), IMU/orbiter based integrated navigation, and IMU/orbiter/Mars surface beacon (MSB) based integrated navigation. We demonstrate through simulations that first scheme, IMU based DR, produces substantially large state estimation errors. Although these errors are reduced by adding two Mars orbiters, the system is only barely observable. However, by adding two MSBs in above configuration, the position and velocity estimation errors are reduced to the scope of 10 m and 0.5 m/s respectively and the navigation system becomes completely observable. Finally, the estimability of states is investigated; it is observed that velocity variables or velocity variables linear combinations can be estimated better than position variables.

AB - This paper studies three schemes of Mars entry navigation: inertial measurement unit (IMU) based dead reckoning (DR), IMU/orbiter based integrated navigation, and IMU/orbiter/Mars surface beacon (MSB) based integrated navigation. We demonstrate through simulations that first scheme, IMU based DR, produces substantially large state estimation errors. Although these errors are reduced by adding two Mars orbiters, the system is only barely observable. However, by adding two MSBs in above configuration, the position and velocity estimation errors are reduced to the scope of 10 m and 0.5 m/s respectively and the navigation system becomes completely observable. Finally, the estimability of states is investigated; it is observed that velocity variables or velocity variables linear combinations can be estimated better than position variables.

KW - Condition number

KW - Estimability

KW - Fisher information matrix

KW - Mars entry integrated navigation schemes

KW - Observability

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DO - 10.1016/j.asr.2015.05.016

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SN - 0273-1177

VL - 56

SP - 952

EP - 963

JO - Advances in Space Research

JF - Advances in Space Research

IS - 5

ER -

Observability analysis of Mars entry integrated navigation

Abstract

Keywords

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