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北斗/GPS双频载波相位单点定位模型及精度分析
李金龙,王冰,王爱兵,朱恩慧,袁红月
0
(北京卫星导航中心,北京 100094)
摘要:
针对海洋工程实时米级绝对定位需求,利用双频伪距、载波相位观测量和同时估计接收机位置、接收机钟差和载波相位模糊度,构建了一种双频载波相位实时单点定位方法。亚太区域14个测站试验结果显示:北斗水平和高程定位RMS分别为1.33m和1.81m,GPS为0.60m和0.85m,北斗/GPS组合为0.56m和0.72m;船载动态试验结果显示:北斗水平和高程定位RMS分别为1.40m和2.46m,GPS为0.69m和0.90m,北斗/GPS组合为0.65m和0.83m。
关键词:  北斗  GPS  载波相位  单点定位  精度
DOI:
基金项目:国家自然科学基金(41931076,L1924033,4210040864)
BDS/GPS Dual-frequency Carrier-phase Single Point Positioning Model and Accuracy Analysis
LI Jin-long,WANG Bing,WANG Ai-bing,ZHU En-hui,YUAN Hong-yue
(Beijing Satellite Navigation Center, Beijing 100094, China)
Abstract:
For offshore engineering real-time meter-level absolute positioning requirements, a real-time single point positioning method based on dual frequency pseudo range, carrier phase observation and simultaneous estimation of receiver position, receiver clock offset and carrier phase ambiguity is proposed. The results of static data collected from 14 stations in Asian-Pacific region show that the RMS values of BDS in horizontal and vertical directions are 1.33m and 1.81m, those of GPS are 0.60m and 0.85m and those of BDS/GPS are 0.56m and 0.72m. The results of shipborne kinematic tests show that the RMS values of BDS in horizontal and vertical directions are 1.40m and 2.46m, those of GPS are 0.69m and 0.90m and those of BDS/GPS are 0.65m and 0.83m.
Key words:  BDS  GPS  Carrier-phase  Single point positioning  Accuracy

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