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中文摘要：
本文提出了一种改进LAMBDA方法：在确定Z变换后的模糊度时，改变以往对所有历元的模糊度全部进行搜索的做法，而是通过设置合理的条件，将搜索与直接归整有效地结合起来，从而减少了模糊度的解算时间，提高了解的效率。文章最后利用实测GPS数据验证了改进效果。
英文摘要：
An improved LAMBDA method for GPS integer ambiguity estimation was proposed in this paper. To be different with the conventional LAMBDA method, the proposed method fixed the transformed ambiguity float solutions not just by the integer least-squares search method, but by taking the combined ways of rounding and searching. It took less time to resolve the ambiguity than LAMBDA and improved the efficiency of the ambiguity resolution. At last one real-data experiment was given to testify the proposed method.
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