Performance comparison among the autonomous navigation methods for constellation around the earth-moon libration points via the Fisher information matrix

Xin, Shijun; Zheng, Wei; Wang, Yidi; Lian, Shunguo; Zhang, David

doi:10.23919/icif.2017.8009777

Cited by 1 publication

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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:

View full text Add to dashboard Cite

show abstract

Performance comparison among the autonomous navigation methods for constellation around the earth-moon libration points via the Fisher information matrix

Cited by 1 publication

References 6 publications

Planning of refracted starlight observation based on observability analysis

Planning of refracted starlight observation based on observability analysis

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