伪惯导建模的极区双速度模式惯性系对准算法  

Double-velocity inertial-frame alignment algorithm with pseudo INS modeling in polar regions

作　　者：李杨 刘猛 宫京 王永召 邓福建 LI Yang;LIU Meng;GONG Jing;WANG Yongzhao;DENG Fujian(Naval Research Institute, Beijing 100161, China;Tianjin Navigation Instrument Research Institute, Tianjin 300131, China;Laboratory of Science and Technology on Marine Navigation and Control, China State Shipbuilding Corporation, Tianjin 300131, China)

机构地区：[1]海军研究院,北京100161 [2]天津航海仪器研究所,天津300131 [3]中国船舶航海保障技术实验室,天津300131

出　　处：《系统工程与电子技术》2022年第5期1677-1684,共8页Systems Engineering and Electronics

基　　金：军科委基础加强项目(173计划)(2020JCJQZD134)资助课题。

摘　　要：针对极区V^(b)辅助的捷联惯性导航系统(strapdown inertial navigation system,SINS)行进间惯性系对准,提出了基于伪惯导建模的双速度模式惯性系对准算法,消除由惯导建模引起的极区导航误差放大以及传统惯性系对准过程存在的模型误差问题,提高极区对准性能。最后通过低纬度车载半实物仿真试验以及极区对准仿真试验对其进行验证。在75°和85°初始纬度,50次航向对准结果的平均绝对误差和标准差分别为0.5072°、2.5273°和0.6052°、2.875°。试验结果表明,所提算法是可行且合理的,可以解决极区SINS行进间惯性系对准中惯导建模以及对准模型所存在的问题,提高极区对准的性能。Aiming at the body-frame velocity-aided V^(b) in-motion inertial-frame alignment of the strapdown inertial navigation system(SINS)in polar regions,this paper proposes the double-velocity inertial-frame alignment with the pseudo inertial navigation system(INS)modeling.With the proposed algorithm,the enlargement of polar navigation errors caused by the INS modeling and the errors of alignment modeling in the process of traditional inertial-frame alignment can be eliminated to improve the performance of the polar alignment.Finally,the semi-physical car experiments in low latitude region and the simulations in polar regions are conducted.In the initial latitudes 75°and 85°,the mean absolute error(MAE)and standard deviation(STD)of 50 alignment results with the proposed algorithm are 0.5072°,2.5273°and 0.6052°,2.875°,respectively.Consequently,the proposed algorithm would be feasible and favorable and the problems arise in polar INS modeling and the inertial-frame alignment modeling can be handled.Then the performance of the polar alignment can be improved.

关 键 词：极区对准 伪惯导建模 惯性系对准 粗对准 

分 类 号：U666.1[交通运输工程—船舶及航道工程]