北斗/GPS双频载波相位单点定位模型及精度分析

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.

BDS/GPS Dual-frequency Carrier-phase Single Point Positioning Model and Accuracy Analysis

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.