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International Journal of Aerospace Engineering
Volume 2017 (2017), Article ID 4378640, 12 pages
Research Article

Mars Atmospheric Entry Integrated Navigation with Partial Intermittent Measurements

1School of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 45002, China
2School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China

Correspondence should be addressed to Tai-shan Lou

Received 12 June 2017; Accepted 13 August 2017; Published 24 September 2017

Academic Editor: Christopher J. Damaren

Copyright © 2017 Tai-shan Lou et al. 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.


Signal degradation suffered by the vehicle is a combination brownout and blackout during Mars atmospheric entry. The communications brownout means that signal fades and blackout means that the signal is lost completely. The communications brownout and blackout periods are analyzed and predicted with an altitude and velocity profiles. In the brownout period, the range measurements between the vehicle and the orbiters are modeled as intermittent measurements with the radio signal arrival probabilities, which are distributed as a Rayleigh distribution of the electron number density around the entry vehicle. A new integrated navigation strategy during the Mars atmospheric entry phase is proposed to consider the probabilities of the radio measurements in the communications brownout and blackout periods under the IMU/beacon scenario based on the information filter with intermittent measurements. Numerical navigation simulations are designed to show the performance of the proposed navigation strategy under the integrated navigation scenario.