一种新的舰载惯导系统综合校正方法  

New comprehensive calibration method of carrier-based inertial navigation system

作　　者：冯培德[1] 李魁[1] 王玮[1] 杨涛[2] 

机构地区：[1]北京航空航天大学仪器科学与光电工程学院,北京100191 [2]天津航海仪器研究所,天津300131

出　　处：《中国惯性技术学报》2011年第4期427-430,435,共5页Journal of Chinese Inertial Technology

基　　金：航空科学基金(20080851020)

摘　　要：针对舰载惯导系统长时间导航时误差发散的问题,提出了一种实用的综合校正方法。利用间断获取的外部参考位置速度信息,采用参数辨识法提取当前时刻惯导系统平台误差角并进行修正,计算导致惯导误差发散的等效陀螺漂移并进行补偿,在不进行重新对准的条件下实现系统误差的重置。试验结果表明,该校正方法对水平平台误差角和等效陀螺漂移的校正精度可分别达到5"和0.0005(°)/h,从而将系统误差的舒拉振荡幅度和发散的位置误差抑制在一定范围内,提高了长航时惯导系统的等效导航精度。A new comprehensive calibration method is proposed to solve the problem that position error of carrier based INS would increase with time in long-time voyage.Intermittent external references are acquired to determine INS position and velocity errors,and the parameters identification method is used to pick-up the platform misalignment angles and the equivalent gyro drifts,which are compensated in the outputs to realize INS errors resetting process without re-alignment.Experiment results show that the proposed calibration method can achieve accuracy of 5＂ and 0.0005（°）/h in platform misalignment angles and equivalent gyro drifts respectively,thus can restrain the system errors to a certain range and greatly improve the equivalent system navigation accuracy.

关 键 词：惯性导航 舒拉振荡 综合校正 参数辨识 

分 类 号：U666.1[交通运输工程—船舶及航道工程]