基于预置欧拉旋转的垂直姿态测量  

Vertical attitude measurement based on Euler's pre-rotation

作　　者：程为彬[1] 潘萌[1] 汤楠[1] 汪跃龙[1] 霍爱清[1] 

机构地区：[1]西安石油大学电子工程学院,西安710065

出　　处：《仪器仪表学报》2014年第8期1817-1822,共6页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(61174191);陕西省科学技术研究发展计划(2011K06-27);陕西省教育厅产业化培育项目(2013JC08)资助

摘　　要：传统的正交坐标系在垂直姿态附近存在信号幅值和信噪比极低等不足,导致姿态解算精度低。分析了传统正交坐标系垂直姿态测量精度不足的内在原因,基于提高原始测量信号幅度及其信噪比的目的,提出一种预置旋转的正交坐标系,研究了其理论模型和测量误差,进行了原理验证。测试及其解算数据表明,预旋转坐标系在垂直姿态时可增强原始信号幅度10倍以上,较大地提高了垂直姿态测量的总体精度。There are some disadvantages,such as weak signal and low signal-noise ratio （SNR）in conventional orthogonal coordinate system under vertical attitude,which bring about low computation accuracy.Based on the defect analysis of conventional coordinate system in vertical measure-ment,a pre-rotated coordinate system is presented in order to increase the original signal amplitude and the SNR.The theoretical model and its measurement error are investigated and tested.The experiment results and computation data show that this pre-rotated coordinate system can in-crease the original signal amplitude by more than ten times,and greatly improves the overall accuracy of vertical attitude measurement.

关 键 词：姿态测量 垂直姿态 正交坐标系 欧拉旋转 

分 类 号：V241.6[航空宇航科学与技术—飞行器设计] TH761.5[机械工程—仪器科学与技术]