一种基于部分搜索的GNSS模糊度解算方法

A GNSS integer ambiguity resolution method based on partial search strategy

为解决LAMBDA算法搜索策略效率不高的问题,提出了一种基于部分搜索的模糊度解算新方法。该方法的解算成功率接近LAMBDA算法,且只需对最后3维模糊度元素采取搜索策略。同时,通过合理设定搜索椭球的大小和搜索策略;大大提高了搜索效率。通过实验对该新算法与Bootraping算法、LAMBDA算法进行了比较分析,进一步验证了该新算法的有效性。

A new integer ambiguity resolution（IAR）method is proposed.Its success rate is very close to LAMBDA algorithm and the search efficiency is much higher.The reason is that the new method only covers a search space of the last 3-dimensional ambiguity vector and the search hyper-ellipsoid and search strategy are reasonably set.Finally,the comparison of Bootraping,LAMBDA and the new method in a GPS precise positioning experiment further verifies the effectiveness of the new algorithm.