光纤陀螺机载导航系统多信息融合  

Multi-sensor information fusion for airborne navigation system of fiber optic gyroscope

作　　者：王巍[1] 隋丽娜[1] 

机构地区：[1]北京航天控制仪器研究所,北京100854

出　　处：《中国惯性技术学报》2009年第3期313-318,共6页Journal of Chinese Inertial Technology

基　　金：国防基础科研资助项目(C0320060532)

摘　　要：为解决纯惯导高度通道的发散问题,引进气压高度表外部阻尼高度通道;为提供精度较高而且能够连续测量的航向参数,引进了数字磁罗盘;对气压高度表和数字磁罗盘这两种传感器的工作原理及信息处理技术进行了研究。在针对利用气压高度表进行高度阻尼、数字磁罗盘误差补偿这一系列相关问题研究的基础之上,将高度表提供的高度信息和磁罗盘提供的磁航向角信息同惯性传感器提供的信息进行多传感器信息融合算法仿真,同时将设计的二阶高度阻尼回路的状态参量作为组合卡尔曼滤波器的状态参量参与滤波,提高了相关导航参数的精度。而高度表和磁罗盘的体积相对不大,成本较低,所以这种组合方式有一定的可行性和优越性。In order to solve the problem of height channel divergence in pure inertial navigation system, a barometric altimeter was introduced to provide the outside information to damp the error accumulation. Meanwhile, a digital compass was used to provide the continuously measured and high-precision heading parameter. The theories and the information processing techniques of barometric altimeter and digital compass were studied. Based on the study on barometric altimeter＇s altitude-damp, the digital compass＇s offsets and scales, as well as the elimination of ~ magnetic deviation, the simulation of multi-sensors information fusion algorithms was made for the compass＇s magnetic heading signal, the barometric altimeter＇s altitude signal, and the inertial sensor＇s information. The status of two-order-altitude-damper was also considered as a parameter of Kalman filter to improve the precision of correlated navigation parameters. Since the altimeter and the magnetic compass are small volume and low cost, this kind of combination is feasible and superior.

关 键 词：光纤陀螺 导航系统 气压高度表 数字磁罗盘 信息融合 

分 类 号：U666.1[交通运输工程—船舶及航道工程]