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研究了采用双基线方案测量载体的姿态，利用ＧＰＳ双差相位测量基线矢量，双差伪距观测值辅助解相位整周模糊，双频时引入空间变换缩小置信空间搜索次数，通过实例分析得出了正确解算相位模糊与观测次数、伪距测量精度的关系，并利用误差传播定律对姿态测量精度进行分析，结合卫星星历数据计算表明，在卫星运行周期内航向角和俯仰角平均测量精度在一定条件下优于２ｍｒａｄ。
The dual-baseline scheme was used to measure the attitude of the carrier. The GPS dual-difference phase measurement was used to measure the baseline vectors. The double-difference pseudo-range observation aided the whole-phase ambiguity resolution. At the dual frequency, the spatial transform was introduced to reduce the number of search space. The relationship between phase ambiguity and the number of observations and the accuracy of pseudorange measurement is solved correctly. The error propagation law is used to analyze the attitude measurement accuracy. Combined with the satellite ephemeris data, it is shown that the average measurement accuracy of the heading and pitch angles during the satellite operation cycle Under certain conditions better than 2mrad.