摘要
格拉纳斯(GLONASS)系统采用频分多址技术,差分技术处理双差载波相位观测值时为保持模糊度参数的整数特性,需要加入伪距计算单差模糊度进行辅助求解。为了降低伪距观测误差对双差模糊度快速固定的影响,本文给出了一种GLONASS双差模糊度解算方法:建立检验搜索出最佳的单差模糊度,再固定双差模糊度;并利用实测数据对该方法进行验证,结果证明可以有效地减少伪距误差对双差模糊度解算的影响。
As the Frequency Division Multiple Access technology is adopted in GLONASS, the receiver clock error can not be completely eliminated in double-differencing procedures, therefore the pseudo-range is used to aid the ambiguity resolution of the doub- le-differential carrier phase observes. In the paper, a GLONASS double-differential carrier phase ambiguity resolution method that ena- bles effective reduction of the influence of pseudo-range error was proposed. This method employed two processes, a single-differential ambiguity resolution process based on T-distributed statistic, and a double-differential ambiguity resolution process based on the famous LAMBDA method. Results from field test showed that the method could effectively restrain the impact of pseudo-range error on the double-differential ambiguity resolution process.
出处
《测绘科学》
CSCD
北大核心
2013年第5期143-145,共3页
Science of Surveying and Mapping
基金
国家自然科学基金项目(40974008)
