Design and Realization of a High-Performance Integrated Attitude Determination System and Hybrid Simulation

A high-performance integrated attitude determination system based on multi-sensor is proposed and implemented, which is suitable for high resolution of ground stability and agile mobile observation of the new generation earth observation micro-satellites. This system includes the sensitive subsystem, the signal collecting and preprocessing subsystem and the comprehensive processing subsystem. The sensitive subsystem is integrated by four types of sensitive components sub-software, which include the star sensitive probe, the sun sensitive probe, the fiber-optic gyroscope and the magnetic probe. The signal collecting and preprocessing subsystem, implemented by the FPGA module and its periphery circuit, receives output data from the four types of sensitive probe in parallel, and accomplish the data smoothing and preprocessing. According to the sunlight information, starlight information, inertial information and information based on magnetic after they are smoothness and pretreatment, the comprehensive processing subsystem, with ARM module as the core, adopts the combination attitude determination method based on the ant colony particle filter algorithm to realize the high-performance attitude determination of the system. Aiming at the integration needs of micro-satellites, a kind of multi-sensor integrated attitude determination system structure of small volume, light weight, high level of integration, high reliability is designed. Finally, tests and experiments based on the integrated attitude determination system were conducted, which meet the design requirements.