车载平台GPS姿态测量

The GPS Attitude Determination for Vehicle Carried Platform

本文简要介绍了GPS姿态测量技术的原理 ,包括姿态角的定义、坐标转换等 ,推导了姿态角的计算方法 ,并对其精度进行了分析 ,在此基础上重点讨论了对一特定姿态测量系统如何提高其精度的问题。在天线间长度已定、载波相位测量精度也已定的前提下 ,采用以天线间固定间距为约束条件的方法来提高所测姿态角的精度 ,并通过实际实验数据对此方法进行了检验 。

This paper introduces the principles of the vehicle carried GPS attitude determination,including the definition of attitude and coordinates transformation,and then deduces the calculation of the attitude and analyses its accuracy.Based on that,the problem of how to increase the accuracy for a given attitude determination system is discussed.In condition of that the antenna's length is settled and the accuracy of the carried phase fixed also,a method in which the fixture interval of the antenna has been taken as the constraint condition is used to enhance the attitude precision.While the actual experiment data is adopted to testify that.The result shows that this method is necessary and effective for increasing the accuracy of the attitude.