惯导系统在动基座上的对准研究  

Research on INS Alignment with Disturbing Motion Base

作　　者：徐仕会[1] 冯培德[1] 马红日[2] 

机构地区：[1]西北工业大学自动化学院,陕西西安710072 [2]西安飞行自动控制研究所,陕西西安710065

出　　处：《兵工学报》2008年第7期887-890,共4页Acta Armamentarii

摘　　要：动基座上惯导系统初始对准,系统信噪比弱,干扰信号强度较大,有用量测信号强度小,对准过程收敛慢。为提高惯导系统在动基座上的对准精度及对准快速性,设计了基于位置信息观测及递推滤波参数估计的对准方案,通过开路粗对准及舒拉调谐闭路估计精对准,实现游移方位惯导系统在动基座上的平台调平、航向确定及陀螺漂移测定,车载试验结果表明,所设计的方案,达到了较好的效果。The system＇s S/N ratio is very low when Inertial Navigation System carries through alignment process on a dynamic base, so the convergence time of alignment process is long. In order to improve the alignment accuracy and reduce the alignment time, a new approach based on position observation and parameter estimation was brought forward by means of Markov recursive filter. The wander azimuth INS platform realizes the adjustment of level axis, the confirmation of heading direction and the detection of gyro drift through open-loop coarse alignment and Schuler tuned-loop fine alignment. The vehicle-borne test results show that the high-precision alignment and the reduced alignment time are obtained by means of the method.

关 键 词：飞行器控制 导航技术 动基座对准 扰动 递推滤波 系统试验 

分 类 号：V249.322[航空宇航科学与技术—飞行器设计]