摘要
提出了一种适合于单频接收机的快速模糊数求解方法。结果表明 ,在用单频接收机的相对定位中 ,该方法快速。
This paper puts forward a new method of rapid ambiguity resolution for single_frequency GPS receivers .The new method needs not resolve float solutions of ambiguities and also uses the integer Gauss transformation technique like LAMBDA method. Its principle is that the total sums of squares of residuals in sequence is expressed as a quadratic of the function of integer ambi_guity, then a suitable searching space is constructed through the integer Gauss transformation, and a point is searched whose whole sum of squares of residuals is the least by using a method of the reordering of the conditional variances. Using this method, when new observations need be added, it is not necessary to process all of the old and new observations but only to calculate the changes of the residues caused by the new observations, which decreases the memory and the time of resolution and also improves the conditions of the search space of ambiguities. Therefore, determining the ambiguities by the new method is rapider than by other methods. The numerical results of experiments on different length baselines show that the new method is rapid and stable in relative positioning with single_frequency GPS receivers.
出处
《武汉测绘科技大学学报》
CSCD
2000年第2期108-112,共5页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金
中科院动力大地测量学开放研究实验室资助项目!编号 49804001
关键词
GPS
模糊数
整数高斯变换
单频接收机
求解
GPS ambiguity
integer Gauss transformation
the LAMBDA method
single_frequency GPS receiver
