Abstract:In this paper, the mathematical model of GPS and GLONASS based on the single difference between stations is derived, and the error factors affecting the positioning accuracy are analyzed. Considering that the ambiguity is fixed without cycle slip and gross error, single difference ambiguity can be more smooth using filtering of selecting equivalent weight matrix, and then can be fixed with double difference ambiguity after choosing a reference ambiguity. The dynamic and static short baseline data are measured with different lengths, and the results show that the double difference ambiguity based on adaptive filtering by selection of the parameter weights of single difference model can be fixed well, and success rate is higher than the single epoch solution.
LIU Huimin,WANG Zhenjie,OU Jikun et al. Ambiguity Resolution of GPS/GLONASS Based on Single Difference between Stations[J]. jgg, 2017, 37(12): 1256-1262.