中文摘要：

研究了GPS载波相位双差测量方向的原理和应用最小二乘法解算基线矢量的方法；提出了快速解算整周模糊度的优化算法。实验表明，采用基线长度作为约束条件，应用GPS双天线测量方向的原理和搜索模糊度优化算法正确，其定向精度达0．12°，解算时间小于0．3S。

英文摘要：

Theory of measuring orientation using GPS double-differential carrier-phase and method of solving baseline vector using least square method were researched. The optimized algorithm of fast solving integer ambiguityI was proposed. Experiments indicated that taking baseline length as constraint condition, theory of GPS double-antenna measurement and the optimized algorithm of fast solving integer ambiguity were correct. Its orientation precision could achieve 0.12° and calculating time was less than 0.3 s.