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中文摘要：
用平差因子阵构建了只含模糊度参数的等价方程，提出了一种部分模糊度搜索方法。实验表明，该方法显著提高了模糊度的解算效率，并提高了模糊度固定的成功率。
英文摘要：
The resolution of phase ambiguity is the key of using GPS to perform high precision fast positioning. Here, an equality equation which only contains ambiguity parameters is constructed, and a parts ambiguities search method is suggested. The manipulating steps are as follows： （1） divides the ambiguities into the primary ambiguity group and secondary ambiguity group, and only estimates the float solution of the primary ambiguity group; （2） uses decorrelation method to reduce the correlations of the phase ambiguities; （3） after the primary ambiguity group is fixed, the secondary ambiguity group is resolved by utilizing the original equation groups. Examples show that applying the parts search method can facilitate the efficiency and success rate of resolving GPS phase ambiguity.
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