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A Study on Alignment of analytic Space Stable Inertial Navigation System

The paper presents a description of the hardware for SSINS (Space Stable Inertial Navigation System), and 4-gimbal analytic SSINS is selected. The navigation principle and mechanization of SSINS is studied based on the 4-gimbal space stable platform. The compensation mode of Inertial Space and the compensation mode of “mathematical platform” are suggested by analysing the compensation principle and mode of gyro drift. The mechanization schemes of two co-ordinates are analyzed in the paper, one is to solve the navigation information directly in inertial co-ordinates system and convert the navigation parameters of the Earth-Centered Inertial system to LGVC (Local Geodetic Vertical Coordinates) to show the navigation information of the local longitudinal and latitudinal value and speed. Numerical simulation results are presented in the end.