摘要
整周模糊度解算方法的合理选择是GNSS定向处理中的关键问题,针对此问题,该文对GNSS定向中的LAMBDA_C和CLAMBDA两种附有基线长约束的模糊度固定方法的性能进行了详细的对比分析。结果显示,相对于经典的基于Ratio检验的LAMBDA算法,LAMBDA_C和CLAMBDA均可提高模糊度固定率和正确率,尤其是在单频单系统下提高效果更为显著;CLAMBD的总体固定效果略优于LAMBDA_C,但后者的解算效率更高。
For the short baseline heading determination,the reasonable selection of ambiguity resolution method which can realize instantaneous and right ambiguity resolution is a key issue.This paper analyzed the influence of two baseline length constraint methods of ambiguity resolution using two sets of GPS/BDS real data.The result showed that the LAMBDA_C and CLAMBDA had higher fixing rate and right fixing rate than traditional LAMBDA using ratio validation,and it was more significant on the standalone system with single frequency data.The ambiguity resolution success rate of CLAMBDA was slightly better than that of LAMBDA,however the calculation efficiency of the latter was obviously higher than that of the former.
出处
《测绘科学》
CSCD
北大核心
2016年第6期53-58,共6页
Science of Surveying and Mapping
基金
国家自然科学基金项目(41204030)
国家基础测绘科技项目(2014020)
