High-precision attitude determination method for spacecraft attitude motion simulation platform

The objective of the invention is to provide a high-precision attitude determination method for a spacecraft attitude motion simulation platform. Equipment used in the method comprises a laser tracker, an intelligent probe, a gyroscope and two industrial control computers, so a ground fully-physical simulation experimental facility is constructed. The method is an improved method for attitude determination based on extended Kalman filtering, acquires attitude information of the spacecraft attitude motion simulation platform by carrying out data-fusion filtering on output information of the laser tracker and the gyroscope, better accords with actual working conditions and has high instantaneity. Measurement equipment used in the invention is easy to install, has high measurement precision and can realize dynamic contactless measurement of the attitude angle and angular rate information of the spacecraft attitude motion simulation platform.