关键词: 自调平台, 动基座, 坐标变换, 方位角

Abstract: The platform is remained horizontal by self-stabilization platform，which the angle variation on the base is sensed by optical electrical sensors. The horizontal benchmark is offered by self-stabilization platform for the measurement instrument. The instrument, which needs the horizontal benchmark, can be used in the moving base surroundings. For example，the theodolite can be used in a ship. But，in the moving base surroundings，using selfstabilization platform as the horizontal benchmark，the theodolite is used to measuring azimuth angle. But, through the analysis of the self-stabilizaing processing, there is a turn angle in azimuth direction between the measuring aim and the stabilized platform. It influences the measuring precision of azimuth angle. Based on the theories of selfstabilization platform，the calculation formula is derived.The main factors, which influence the azimuth angle, are analyzed.The influencing degree of the parameters are respectively expounded. Finally,based on these analysis results, the considerations of measuring the azimuth angle are performed,when self-stabilization platform is used. The methods of avoiding measuring error and the methods of error compensation are discussed.

Key words: Self-stabilization platform, Moving base, Coordinate transformation, Azimuth angle