摘要
由于GLONASS与BDS、GPS相比,其相对定位的双差模糊度失去整数特性,本文给出了BDS/GPS/GLONASS组合单频相对定位的统一的函数模型。初步分析了BDS/GPS/GLONASS组合单频载波相位相对定位的定位性能,对整周模糊度采用LAMBDA方法,单历元搜索策略。通过实测短基线数据分析表明:相比于单系统及双系统组合的相对定位,三系统组合单频单历元相对定位能够有效地提高定位精度及模糊度固定率,而且更加适合城市峡谷等复杂环境。
Compared with BDS and GPS, the double-difference ambiguity of relative po- sitioning lost its integer property. The paper gives relative positioning models of combined BDS/GPS/GLONASS with single-frequency. Preliminary analyze the positioning perform- ance of combined BDS/GPS/GLONASS single-frequency relative positioning with carrier phase observation, and with ambiguity using LAMBDA method, single epoch searching strategy. By short baseline measurement data analysis showed that： compared with single- frequency relative positioning of single-system and dual-system, single-frequency relative po- sitioning of three-systems can improve the positioning accuracy and fixed rate of ambiguity, and more suitable for urban-canyons environments.
出处
《全球定位系统》
CSCD
2016年第1期43-48,共6页
Gnss World of China
