XNAV/CNS Integrated Navigation Based on Improved Kinematic and Static Filter

Author:

Wang Yidi,Zheng Wei,An Xueyin,Sun Shouming,Li Li

Abstract

In order to enhance the independent viability of high-orbit satellites, an X-ray pulsar-based navigation (XNAV)/celestial navigation system (CNS) integrated navigation method is proposed. An improved kinematic and static filter is derived to fulfil data fusion that can obtain an optimal estimation for global use. In the filter, unscented transformation is used to reduce linearization error, and the technique of separate-bias is used to reduce the impacts of systematic errors in XNAV measurements. The results of simulations have shown that the proposed navigation system can reach a positioning accuracy of less than 100 m, an improved performance over separate XNAV and CNS.

Publisher

Cambridge University Press (CUP)

Subject

Ocean Engineering,Oceanography

Reference27 articles.

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2. Mao Y. (2009). Research on X-ray Pulsar Navigation Algorithms. Doctoral Dissertation, PLA Information Engineering University.

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4. Observability Analysis of Satellite Autonomous Navigation System using Single Pulsar;Zheng;Journal of Applied Sciences-Electronics and Information Engineering,2008

5. Sheikh S. I. (2005). The Use of Variable Celestial X-ray Sources for Spacecraft Navigation. Doctoral Dissertation, Mayland University.

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