一种提高电子罗盘航向和姿态测量精度的新方法  

A Novel Algorithm for Improving the Accuracy of Attitude and Heading Angle Measurement of Electronic Compass

作　　者：胡超[1,2] 艾国祥[1] 庞峰[1,2] 李圣明[1] 马利华[1] 

机构地区：[1]中国科学院国家天文台,北京100012 [2]中国科学院大学,北京100049

出　　处：《上海交通大学学报》2015年第2期158-163,168,共7页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金(61271284);中国科学院重点部署项目(KJCX2-EW-J01);知识创新工程重要方向项目(KGCX2-EW-407-1);国防科技创新重点部署项目(KGFZD-125-14-005-2)资助

摘　　要：针对电子罗盘在甚小口径终端(Very Small Aperture Terminal,VSAT)应用中出现的航向和姿态测量精度问题进行了研究.讨论了电子罗盘航向和姿态测量的基本原理,推导了姿态测量误差和航向测量误差的数学模型,分析了滚转角和航向角测量误差随俯仰角增大而增大的原因,提出了一种提高航向和姿态测量精度的新方法.仿真和实测结果表明:新方法能基本消除俯仰角对滚转角测量精度的影响,同时能有效提高航向角测量精度.在转台俯仰角30°情况下,采用新方法修正后的滚转角精度约为0.2°,航向角精度约为0.5°.This paper studied the measurement precision of the electronic compass used in VSAT（very small aperture terminal）, The basic principle of the measurement was discussed in detail, and the error mathematical model of the measurement was derived. The cause for the increase of the roll angle measurement error with the increases of the pitch angle was analyzed and a novel method for improving the measurement precision was proposed based on the above analysis. The simulation and experiment results show that the novel method can remove the influence of pitch angle on the roll angle measurement and can im- prove the accuracy of heading measurement effectively. The application of the novel method shows that the roll angle accuracy is approximately 0.2v and the heading angle accuracy is approximately 0.5°with a turntable pitch angle of 30 °.

关 键 词：电子罗盘 航向和姿态测量 甚小口径终端 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]