A Improving Method for Validating Ambiguity Resolution of BeiDou Static Baseline Solution with Medium-Long Baseline

摘要

In BeiDou static baseline solution with medium-long baseline (20-60 km), there are two problems: (1) selection of algorithm model; (2) selection of ambiguity validation value and validation methods. Theories and methods of static baseline solution of medium-long baseline are analyzed and compared respectively based on BeiDou Bl and B3 double-frequency observations. The results, which are based on observational datas, show that LC fixed solution model is obviously better than B1+B3 model. At the same time, we compare the single ratio validation method with the joint ratio validation method. The results show that: because of the ill condition of BeiDou system, the single ratio method has a false phenomenon. On this basis, a new method which bases on the residual of observation is added. It can reduce the probability of error and has good application value in engineering practice.