[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.9766/KIMST.2021.24.6.577

Self-Alignment/Navigation Performance Analysis in the Accelerometer Resonance State Generated by Dither Motion of Ring Laser Gyroscope in Laser Inertial Navigation System

Kim, Cheonjoong (The Missile Research Institute, Agency for Defense Development)
Lim, Kyungah (The Missile Research Institute, Agency for Defense Development)
Kim, Seonah (The Missile Research Institute, Agency for Defense Development)

Publication Information

Journal of the Korea Institute of Military Science and Technology / v.24, no.6, 2021 , pp. 577-590 More about this Journal

Abstract

In this paper, we theoretically analyzed the self-alignment/navigation performance in the accelerometer resonance state generated by dither motion of ring laser gyroscope in LINS and verified it through simulation. As a result of analysis, it is confirmed that the amplitude of the accelerometer measurement amplified in the accelerometer resonance state is decreased in the process of sampling per the navigation calculation period and that frequency is changed by the aliasing effect too. It was also analysed that the attitude error in self-alignment is determined by the amplitude/frequency of the accelerometer measurement, the gain of the self-alignment loop, and the velocity and position error in the navigation is determined by the amplitude/frequency/phase error of the accelerometer measurement. This analysis and simulation results show that the self-alignment and navigation performance is not be degraded only when the amplification factor of the accelerometer measurement in the accelerometer resonance state is 3 or less

Keywords

Accelerometer Resonance; Laser Inertial Navigation; Dither Motion; Ring Laser Gyroscope; Self-Alignment/Navigation;

Citations & Related Records

Reference

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