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Proceedings Paper

The rotation modulation inertial navigation system for blackout area during hypersonic reentry
Author(s): Jin Li; Jianhui Zhao; Xiaoqiang Sha; Fan Li
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Paper Abstract

Navigation of Hypersonic vehicles in the radio frequency (RF) blackout area during atmospheric reentry is challenging as the vehicles can only use the inertial navigation system (INS) as autonomous navigation method in this area. In this paper, strapdown inertial navigation system (SINS) based on the Fiber Optic Gyroscope (FOG) is used for navigation in blackout area. However, without external navigation measurement, the errors of SINS caused by the FOG drift and accelerometer bias would cumulate with time and degrade navigation accuracy. To solve this problem, single axis rotation modulation along with the azimuth axis of the body frame is adopted. The Generic Hypersonic Vehicle (GHV) model designed by NASA Langley Research Center is used to build the reentry fight model which can generate navigation information for simulation. Through derivation the error equations of FOG SINS in the North-East-Down (NED) navigation frame, the principle of error compensation by rotation modulation can be well understood. The simulation results show that rotation modulation can effectively decrease the impact of inertial sensor drift and improve the navigation accuracy in blackout area.

Paper Details

Date Published: 25 October 2016
PDF: 8 pages
Proc. SPIE 10158, Optical Communication, Optical Fiber Sensors, and Optical Memories for Big Data Storage, 1015813 (25 October 2016); doi: 10.1117/12.2247139
Show Author Affiliations
Jin Li, BeiHang Univ. (China)
Jianhui Zhao, BeiHang Univ. (China)
Xiaoqiang Sha, BeiHang Univ. (China)
Fan Li, BeiHang Univ. (China)

Published in SPIE Proceedings Vol. 10158:
Optical Communication, Optical Fiber Sensors, and Optical Memories for Big Data Storage

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