引用本文: 任超, 欧吉坤, 袁运斌. 一种用于GPS整周模糊度OTF求解的整数白化滤波改进算法[J]. 武汉大学学报 ( 信息科学版), 2004, 29(11): 960-963.
REN Chao, OU Jikun, YUAN Yunbin. A New Method for GPS Ambiguity Resolution on-the-Fly Using Integer Whitening Filter Search[J]. Geomatics and Information Science of Wuhan University, 2004, 29(11): 960-963.
 Citation: REN Chao, OU Jikun, YUAN Yunbin. A New Method for GPS Ambiguity Resolution on-the-Fly Using Integer Whitening Filter Search[J]. Geomatics and Information Science of Wuhan University, 2004, 29(11): 960-963.

## A New Method for GPS Ambiguity Resolution on-the-Fly Using Integer Whitening Filter Search

• 摘要: 提出一种用于整周模糊度OTF求解的整数白化滤波改进算法。该算法首先对整周模糊度的协方差矩阵进行整数白化滤波处理,以降低整周模糊度间的相关性,然后构造搜索空间来判定是否需要进行搜索。如果需要,则通过搜索来确定变换后的整周模糊度;如果不需要,则通过直接取整来确定整周模糊度,进而得到原始的整周模糊度和基线分量的固定解。初步试验结果显示,采用改进方法解算整周模糊度可以提高成功率和解算效率。

Abstract: An improved integer whitening filter search method for GPS ambiguity resolution on-the-fly is proposed. In the new method, the integer whitening filter is used to decorrelate the ambiguities. Then according to the decorrelated ambiguity covariance matrix and the transformed ambiguities float estimates, whether a search procedure is needed or not is judged. If yes, a conditional search is used to get the best ambiguity set; otherwise the transformed ambiguities can be fixxed just by rounding the float. The new method is simple and economical for GPS ambiguity resolution on-the-fly. It can be used to resolve ambiguity in only one epoch, too. Two numerical experiments are given to show the validity and availability of the new method.

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