船用惯导双平台双位置海上启动方法  

Shipboard INS's two-platform two-position alignment at sea

作　　者：邹铁军[1] 艾光彬[2] 姚琪[2] 张礼伟[3] 

机构地区：[1]中国人民解放军92941部队95分队 [2]天津航海仪器研究所 [3]海军驻天津航海仪器研究所军事代表室

出　　处：《中国惯性技术学报》2015年第5期561-564,共4页Journal of Chinese Inertial Technology

基　　金：总装预研基金项目(51309030501)

摘　　要：针对平台式惯导系统海上动态启动时传统的罗经对准方法和传递对准方法的缺点,提出了一种双平台双位置海上启动方法。粗对准阶段以牵引惯导提供的姿态角作为水平和航向基准通过伺服回路完成粗水平调平和粗方位对准。精对准阶段建立了双位置下的卡尔曼滤波方程,实现了东向陀螺漂移的估计补偿,解决了海上启动时对舰船匀速直航的限定条件。仿真结果表明,相比传统的海上启动法,在0.01(°)/h的东向陀螺漂移的情况下方位失准角的估计误差由2′减小到0.5′左右。To overcome the drawbacks of traditional gyrocompassing and transfer alignment methods,a two-position transfer alignment method based on velocity matching is put forward for shipboard platform INS. The master INS＇s attitude is used to correct the slaver INS＇s attitude by servo loop in the coarse alignment phase. The Kalman filter models are respectively founded for the two coordinate frames to estimate and compensate the drifts of all the gyros,especially the east gyro drift in fine alignment phase. Simulation results show that,compared with traditional methods,this method can improve the alignment accuracy of platform azimuth error from 2′ to about 0.5′ when east gyro drift is 0.01（°）/h.

关 键 词：平台式惯导系统 海上启动 双平台双位置 速度匹配 

分 类 号：U666.1[交通运输工程—船舶及航道工程]