【摘要】 针对平流层浮空器捷联惯导系统空中重新对准的需求,设计了基于单天线GPS辅助的惯性凝固解析式粗对准方法。考虑浮空器平动的同时绕天向存在角运动的情况,采用惯性凝固假设,在GPS速度信息辅助下获取系统在对准时刻的姿态角,并对影响对准精度的因素进行了理论分析。仿真结果表明,在浮空器角运动速率处于-5°/s~5°/s范围内,GPS速度测量误差不大于0.15 m/s的条件下,该方法得到的水平失准角小于8’,可有效实现平流层浮空器惯导系统的空中粗对准。更多还原

【Abstract】 The freezing parsed alignment was proposed with the single-antenna GPS to fulfill the flight coarse alignment of stratospheric aerostat SINS. Considering aerostat’s angular motion around vertical channel when moving,the formulas of freezing parsed alignment which can solve the attitude of the aerostat with the velocity measured by GPS were derived. The factors affecting the alignment performance were analyzed. Simulation results show that algorithm is efficiency for the flight coarse alignment of aerostat SINS with the result of horizontal misalignment angle below 8’ when the aerostat angular rate within the scope of- 5 ° / s ~ 5 ° / s and the velocity measured error of GPS under 0. 15 m/ s.更多还原