摘要
本文提出利用进化策略算法搜索单频GPS整周模糊度,即先利用序贯最小二乘估计降低法矩阵维度,利用正则化算法得到比较接近模糊度真值的浮点解,以此为初值确定搜索范围,并利用进化策略算法搜索模糊度固定解。算例结果表明,该方法能在1min内固定整周模糊度,动态定位结果与GrafNav解算结果误差在2.5cm之内。
In the paper, the algorithm of searching integer ambiguities of single frequency GPS receiver using evolutionary strategies was proposed. Firstly, a sequential least square method was applied to decrease dimensions of the observation matrix of satellites. Secondly, the regularization method was applied to improve the accuracy of the float solution of ambiguities. Then, the float solution was used to decide the searching range. Finally, the evolutionary strategy method was applied to search the fixing solution of ambiguities. The experiment results showed that the ambiguities could be fixed in 1 minute, and the difference between the positioning results of the proposed method and the results of GrafNav could be less than 2.5cm.
出处
《测绘科学》
CSCD
北大核心
2014年第7期40-42,共3页
Science of Surveying and Mapping
关键词
模糊度
进化策略
正则化
动态定位
integer ambiguities
evolutionary strategy
regularization
dynamical positioning
