HRG旋转方位平台惯导系统频域导航算法  

Frequency Domain Navigation Algorithm for HRG-based Carouseling Gimbaled Inertial Navigation System

作　　者：李建军 李钊[2] 宋仔标[1] 李克智 

机构地区：[1]第二炮兵工程大学士官学院,山东青州262500 [2]第二炮兵驻石家庄地区军事代表室,河北石家庄050081

出　　处：《无线电工程》2013年第11期33-35,共3页Radio Engineering

摘　　要：为提高HRG平台惯导系统的自主导航精度,提出在频域中对HRG旋转方位平台惯导系统进行导航解算,以解决其存在较大的旋转效应及划桨效应误差的问题。算法基于傅里叶变换对惯性仪表离散信号进行重构,经比力和坐标变换矩阵频域转换、频域卷积运算及傅里叶反变换后实现了用解析积分来代替数值积分,有效降低了常规时域导航算法速度求解中的时移影响。仿真结果表明,算法能够有效抑制旋转效应及划桨效应误差,提高系统的导航精度。For proper depression of systematic errors and hence a higher navigation accuracy of HRG-based Gimbaled Inertial Navigation System（ HRG-GINS）,a HRG-based Carouseling GINS is constructed by using rotation mean technology. In the proposed algorithm,the time-discrete signal of inertial equipments are fitted with Fourier transformation,and after the frequency domain transformation and succeeding counter-deduction of specific force and attitude matrices,the numerical integration is replaced by analytical integration. Therefore,the time-shifting influence in velocity figuring of normal navigation algorithm is dramatically weakened.The analysis of simulation and experiment results prove that the proposed algorithm can function perfectly in reducing the errors influence and then provide pleasant navigation accuracy.

关 键 词：HRG 旋转 平台惯导 频域导航算法 误差抑制 

分 类 号：U666.12[交通运输工程—船舶及航道工程]