Design Of Communication And Display System Of Dynamic Star Simulator Based On Virtual Insrument

Star simulator is one of an important on the ground calibration test equipment ofstar sensor. Star sensor is a key component of the satellite, it measure the satellite’sattitude in the satellite control system, so the star sensor calibration tests of the groundlevel of accuracy, will directly affect the work of the satellite in orbit accuracy.Attitude and orbital dynamics computer simulation of real-time spacecraft attitudeparameters, orbital parameters and star sensor optical axis point, the simulator controlcomputer satellite attitude and orbital dynamics based on computer simulation toprovide real-time spacecraft orbital parameters, profile parameters, and Star sensoroptical axis of right ascension and declination and field direction, to extract the time starsensor field of view of the guide star, through the interface and driver circuits to driveliquid crystal light valve display star maps, the collimating optical system imaging,resulting in parallel dynamic multi-star light.This paper discusses the dynamic star simulator, the overall structure and workingprinciple, dynamic star simulator control system and the attitude and orbit dynamicssimulation computer data communication system and map display system conductedin-depth research based on virtual instrument technology and CAN bus technology, builtthe hardware circuit for dynamic star simulator communication and display system, anddesign of the software. In order to improve the the angular distance between stars ofdynamic star simulator, presented a star position correction method, and gives the starposition correction curve after the partition of star map, the star map simulationaccuracy effectively improved through the design of map display correction software,and it validated through experiments.