Pulsar and Doppler difference integrated navigation considering clock error control

WANG Lu; SHI Chenxi; LI Jianxun; ZHANG Shuang

doi:10.13443/j.cjors.2017080202

Volume 33 Issue 2

Apr. 2018

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CHINESE JOURNAL OF RADIO SCIENCE > 2018 > 33(2): 217-224. > DOI: 10.13443/j.cjors.2017080202

WANG Lu, SHI Chenxi, LI Jianxun, ZHANG Shuang. Pulsar and Doppler difference integrated navigation considering clock error control[J]. CHINESE JOURNAL OF RADIO SCIENCE, 2018, 33(2): 217-224. doi: 10.13443/j.cjors.2017080202

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Pulsar and Doppler difference integrated navigation considering clock error control

1.
School Automation and Information Engineering, Xi'an University of Technology, Xi'an 710048, China
2.
State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi'an 710119, China

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Received Date: August 01, 2017
Available Online: December 30, 2020
Published Date: April 29, 2018

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Abstract

Abstract

In order to ensure the navigation accuracy of long time navigation systemand and improve the ability of clock error control, X-ray pulsar and Doppler difference integrated navigation method for correction of clock difference is proposed.X-ray pulsar navigation is measured by pulse arrival time, Doppler differential navigation utilizes the difference between the two moment Doppler velocities relative to the sun. The difference between the two Doppler velocities not including Doppler speed deviation can be used as navigation measurement information. The onboard clock error is augmented into the new state variable, the integrated navigation system is established, and the federated unscented Kalman filter(UKF) is used to fuse the navigation information.The simulation results show that the method can suppress the influence of Doppler velocity deviation on navigation, control the clock difference on the onboard clock, and provide higher navigation estimation accuracy.
- X-ray pulsar navigation,
- Doppler differential navigation,
- clock error,
- integrated navigation,
- kalman filter

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