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http://dx.doi.org/10.5139/JKSAS.2011.39.8.796

Performance Analysis of Self-Alignment in the Temperature Stabilizing State of Inertial Navigation System  

Kim, Cheon-Joong (국방과학연구소 3기술 4부)
Lyou, Joon (충남대학교 전자공학과)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.39, no.8, 2011 , pp. 796-803 More about this Journal
Abstract
It is called self-alignment or initial alignment that INS(Inertial Navigation System) is aligned using the measurements from the inertial sensors as an accelerometer and a gyroscope and the inserted reference navigation information in the stop state. The main purpose of self-alignment is to obtain the initial attitude of INS. The accuracy of self-alignment is determined by the performance grade of the used inertial sensors, especially horizontal attitude accuracy by the horizontal accelerometer and vertical attitude accuracy by the E-axis gyroscope. Therefore the uncertain errors in the inertial sensors cause the performance of self-alignment to degrade. In this paper, we analyze theoretically and through a simulation how the errors of inertial sensors in the temperature stabilizing state, one of the uncertain errors, affect the accuracy of self-alignment.
Keywords
Self-Alignment; Temperature Stabilizing;
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