A beacon configuration optimization method based on Fisher information for Mars atmospheric entry

Zhao, Zhifang; Yu, Zhengshi; Cui, Pingyuan

doi:10.1016/j.actaastro.2016.11.018

Cited by 9 publications

(2 citation statements)

References 22 publications

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“…11 A direct impression between system observability and measurements is built through FIM. Inspired by literature, [12][13][14][15] this study proposes a planning of refracted starlight observation based on observability analysis. Furtherly, Fisher information index (FII) is introduced here to optimize observation scheme.…”

Section: Introductionmentioning

confidence: 99%

Planning of refracted starlight observation based on observability analysis

Wang

2021

Proceedings of the Institution of Mechanical Engineers, Part G:

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In traditional observation schemes of stellar refraction navigation, the accuracy was limited due to unreasonable observation directions. In order to ameliorate this situation, a method of refracted starlight observation based on observability analysis is proposed. The function of this method is optimally generating an observation attitude sequence according to standard trajectories of spacecraft so that the selection of a refracted starlight observation sequence can be realized. Specifically, the improvement of Fisher information matrix calculation enables this method to be qualified for the navigation problem with unsteady measurement quantities as well as the non-fully observability which is defined as the capability of estimating the system state through measurements in finite time. Here, we construct a quantitative relationship between refracted starlight measurements and system observability by means of Fisher information index ( FII). Next, the observation scheme is retrieved by searching the maximum value of the optimized variable, which includes the ( FII). Finally, we resort to the extended Kalman filter to accomplish typical trajectory navigation simulations of the observation scheme. The results indicate that our method brings more accuracy than traditional ones in estimation of position and velocity of the optimal observation scheme.

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Section: Introductionmentioning

confidence: 99%

Planning of refracted starlight observation based on observability analysis

Wang

2021

Proceedings of the Institution of Mechanical Engineers, Part G:

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“…Several studies regarding the optimization of beacon configurations have been presented, both in terms of the filter accuracy [ 7 , 8 ] and observabilities [ 9 , 10 ]. On this basis, Theil et al from the German Space Center (Deutsches Zentrum für Luft- und Raumfahrt, DLR) investigated the impact of one to four ground beacons for the small integrated navigation for planetary exploration (SINPLEX) project of ESA [ 4 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

A Distributed Radio Beacon/IMU/Altimeter Integrated Localization Scheme with Uncertain Initial Beacon Locations for Lunar Pinpoint Landing

Luo³

et al. 2020

Sensors

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As a growing number of exploration missions have successfully landed on the Moon in recent decades, ground infrastructures, such as radio beacons, have attracted a great deal of attention in the design of navigation systems. None of the available studies regarding integrating beacon measurements for pinpoint landing have considered uncertain initial beacon locations, which are quite common in practice. In this paper, we propose a radio beacon/inertial measurement unit (IMU)/altimeter localization scheme that is sufficiently robust regarding uncertain initial beacon locations. This scheme was designed based on the sparse extended information filter (SEIF) to locate the lander and update the beacon configuration at the same time. Then, an adaptive iterated sparse extended hybrid filter (AISEHF) was devised by modifying the prediction and update stage of SEIF with a hybrid-form propagation and a damping iteration algorithm, respectively. The simulation results indicated that the proposed method effectively reduced the error in the position estimations caused by uncertain beacon locations and made an effective trade-off between the estimation accuracy and the computational efficiency. Thus, this method is a potential candidate for future lunar exploration activities.

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Terminal altitude maximization for Mars entry considering uncertainties

Cui

Zhao

et al. 2018

Acta Astronautica

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A beacon configuration optimization method based on Fisher information for Mars atmospheric entry

Cited by 9 publications

References 22 publications

Planning of refracted starlight observation based on observability analysis

Planning of refracted starlight observation based on observability analysis

A Distributed Radio Beacon/IMU/Altimeter Integrated Localization Scheme with Uncertain Initial Beacon Locations for Lunar Pinpoint Landing

Terminal altitude maximization for Mars entry considering uncertainties

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