惯性导航系统扰动基座对准仿真研究  

Simulation of INS Alignment on a Disturbing Base

作　　者：徐仕会[1,2] 冯培德[1] 雷宏杰[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：《计算机仿真》2008年第11期88-90,共3页Computer Simulation

摘　　要：为了实现惯性导航系统在扰动基座上的初始对准,解决惯性导航系统动基座对准过程中,扰动干扰信号强度大,有用量测信号强度小,系统信噪比弱,对准过程收敛慢的问题,设计了基于位置信息观测的马尔科夫递推滤波参数估计动基座对准方案,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扰动基座上的平台调平、航向确定及陀螺漂移测定,仿真结果表明,所设计的动基座对准方案,在10分钟内实现惯导系统动基座对准,达到了较好的效果,可以应用于实际系统。For realizing INS （ Inertial Navigation System） alignment on a disturbing base , some problems such as low system＇ s S/N ratio and long convergence time of alignment process should be dealt with. In order to improve the alignment accuracy and reduce the alignment time, this paper brings forward a new approach based on INS position observation and parameters estimation by means of Markov recursive filter. The wander azimuth INS platform realizes its adjustment of level axis, confirmation of heading direction and detection of gyro drift through open - loop coarse alignment and Schuler tuned - loop fine alignment. The simulation results show that a high - precision alignment and direction mensuration on a disturbing base can be realized in almost 10 minutes by means of this new method. This method may be applied in actual systems.

关 键 词：扰动 对准 滤波 仿真 

分 类 号：V249.322[航空宇航科学与技术—飞行器设计]