Version 1
: Received: 11 February 2018 / Approved: 11 February 2018 / Online: 11 February 2018 (06:46:14 CET)
How to cite:
Wang, Z.; Peng, Y.; Liu, J. Relative Velocity Measurement with Spectrometer and Its Integrated Navigation. Preprints2018, 2018020081. https://doi.org/10.20944/preprints201802.0081.v1
Wang, Z.; Peng, Y.; Liu, J. Relative Velocity Measurement with Spectrometer and Its Integrated Navigation. Preprints 2018, 2018020081. https://doi.org/10.20944/preprints201802.0081.v1
Wang, Z.; Peng, Y.; Liu, J. Relative Velocity Measurement with Spectrometer and Its Integrated Navigation. Preprints2018, 2018020081. https://doi.org/10.20944/preprints201802.0081.v1
APA Style
Wang, Z., Peng, Y., & Liu, J. (2018). Relative Velocity Measurement with Spectrometer and Its Integrated Navigation. Preprints. https://doi.org/10.20944/preprints201802.0081.v1
Chicago/Turabian Style
Wang, Z., Yiming Peng and Jiu Liu. 2018 "Relative Velocity Measurement with Spectrometer and Its Integrated Navigation" Preprints. https://doi.org/10.20944/preprints201802.0081.v1
Abstract
In order to enhance the accuracy of the relative velocity measurement for the Mars explorer formation flight, we develop a relative velocity measurement method. In this method, the spectrometers at two Mars explorersare adopted to measure the starlight frequency shift and to estimate the velocity with respect to the star. Unfortunately, the instantaneous velocity of star can not be predicted accurately, which results in a large error in the velocity measurement. The difference of these two velocities, which does not include the proper motion of star, is the relative velocity between a pair of Mars explorers at the direction of the star. However, this navigation method can not work alone because of unobservability. To make the navigation system observable and improve the accuracy of both absolute and relative navigation for the Mars explorer formation flight, we combine it with X-ray pulsar navigation and the inter-satellite links, and propose an autonomous integrated navigation method with observability. In this integrated navigation scheme, the extended Kalman filter is adopted to deal with the relative velocity, the inter-satellite links and the pulse time-of-arrival, and estimate the absolute and relative navigation information for the Mars explorer formation flight. The simulation results demonstrate that both absolute and relative navigation accuracy of the proposed method are higher than that of the pulsar navigation, especially the relative one.
Keywords
navigation; velocity measurement; X-ray pulsar; Mars explorer; formation flight
Subject
Environmental and Earth Sciences, Remote Sensing
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
