摘要
寻求一种高效的坐标变换算法一直是动基座光电测量系统中亟待解决的问题,由此研究了四元数法在动基座光电测量系统坐标变换问题中的应用;利用四元数作为旋转算子的特性,提出了一种改进的坐标变换方法,并利用这种方法推导了视轴从光电平台坐标系到载机坐标系的变换矩阵和在载机坐标系下的方位角、俯仰角计算公式;最后将该方法运用在某机载光电测量系统上,通过采用四元数法和常规方法分别进行地面仿真的数据分析结果,验证了该方法的准确性和优越性。
A high efficiency coordinate transformation method is always a desiderated problem of optoelectronic measuring system in dy namic base. Because of that, this paper studies the quaternion method which is used for solving coordinate transformation problem of optoe- lectronic measuring system in dynamic base. An improved coordinate transformation method is proposed according to the characteristic of quaternion as a rotated operator. At the same time, a transformation matrix of sight axis from platform coordinate to airplane coordinate and calculating formulas of azimuth, elevation in airplane coordinate are deduced with this method. At last, this method is applied in an airborne optoelectronlc measuring system, and then it is proved to be accurate and ascendant by the results of analyzing the data in earth simulations which are using quaternion method and the other normal method separately.
出处
《计算机测量与控制》
CSCD
2008年第1期114-116,共3页
Computer Measurement &Control
基金
国防科技预研基金资助项目(1040603)
关键词
动基座
光电测量系统
坐标变换
四元数
旋转算子
dynamic base
optoelectronic measuring system
coordinate transformation
quaternion
rotated operator
