On the observability of Mars entry navigation using radiometric measurements

Yu, Zhengshi; Cui, Pingyuan; Zhu, Shengying

doi:10.1016/j.asr.2014.06.036

Cited by 22 publications

(18 citation statements)

References 23 publications

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“…Observability is always used to evaluate the performance of the navigation capability and could be observed from measurement information. When the navigation scheme has poor observability degree, the state estimations of the navigation system might be divergent or even unstable [3,6,19,20].…”

Section: Mars Entry Navigation Dynamical Systemmentioning

confidence: 99%

Reliable Distributed Integrated Navigation Based on CI during Mars Entry

Lou

Chen

Wang

et al. 2019

International Journal of Aerospace Engineering

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A reliable distributed covariance intersection (CI) fusion integrated navigation algorithm with information feedback during the Mars atmospheric entry is proposed to meet robust, reliable, and high-precision Mars atmospheric entry navigation strategy. A distributed integrated navigation scheme includes four independent subsystems consisting of an IMU and one radio beacon, but each subsystem is weakly observable under limited Mars entry measurements. The scalar weights are fast obtained by maximizing the information contribution of the corresponding estimate. The distributed framework based upon the CI fusion algorithm is designed by using dynamic information distribution coefficients and information feedback strategy. This distributed fusion approach could meet the lower computation cost and robust and reliable capacity and especially is beneficial to the weakly observable or unobservable subsystems during the Mars entry navigation scheme. Numerical simulations show that the proposed distributed CI fusion integrated navigation algorithm can provide consistent navigation accuracy for the Mars entry vehicle and improve the entry navigation robustness under the weakly observable navigation subsystems.

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Section: Mars Entry Navigation Dynamical Systemmentioning

confidence: 99%

Reliable Distributed Integrated Navigation Based on CI during Mars Entry

Lou

Chen

Wang

et al. 2019

International Journal of Aerospace Engineering

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show abstract

“…In recent years, an innovative navigation scheme based on radio communications between an entry vehicle and an orbiting satellite or a surface beacon is designed to improve the navigation accuracy during the Mars entry phase (Levesque, 2006;Li and Peng, 2011;Williams et al, 2012;Yu et al, 2014). The feasibility of the above navigation scheme is based on research that the ultrahigh frequency radio communication is not blocked by the plasma sheath around the entry vehicle (Morabito, 2002;Morabito and Edquist, 2005;Burkhart et al, 2005;Williams et al, 2012).…”

Section: Introductionmentioning

confidence: 97%

Consider unobservable uncertain parameters using radio beacon navigation during Mars entry

Lou

Zhang

et al. 2015

Advances in Space Research

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“…On the basis of MSBs based navigation, Yu and Cui optimised the configuration of the MSBs by using genetic algorithm (Abraham et al, 2013) and taking the observability as a performance index (Yu et al, 2015). After that they made a thorough observability analysis of Mars entry navigation by using radiometric measurements from MSB (Yu et al, 2014). However, in these researches, observations are added one by one by trials to make the navigation system observable, which may spend a lot of efforts when the dimension of the system is high.…”

Section: Introductionmentioning

confidence: 99%