Pulsar/Star Tracker/INS Integrated Navigation Method Based on Asynchronous Observation Model
Publication: Journal of Aerospace Engineering
Volume 32, Issue 5
Abstract
X-ray pulsar navigation has been considered a great potential navigation method for high-attitude missions and deep-space explorations. One of the main problems of X-ray pulsar navigation is that its accuracy is low. In this paper, a pulsar/star tracker/inertial navigation system (INS)–integrated navigation method was studied. Unlike the traditional pulsar-based integrated navigation method, the novel system was decomposed into two parts according to the speed of the filtering rate, the attitude filter and the velocity and position filter, which could improve the navigation efficiency and reduce the amount of calculation. The simulation results showed that the accuracy of the proposed integrated navigation method was improved by more than 50% compared to pulsar navigation, proving the effectiveness of the integrated navigation scheme proposed in this paper in improving navigation accuracy.
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Published In
Journal of Aerospace Engineering
Volume 32 • Issue 5 • September 2019
Copyright
©2019 American Society of Civil Engineers.
History
Received: May 23, 2018
Accepted: Feb 20, 2019
Published online: Jun 25, 2019
Published in print: Sep 1, 2019
Discussion open until: Nov 25, 2019
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