摘要
随着一体式全球导航卫星系统(GNSS)接收机的广泛应用,用户对接收机的观测值精度的关注度越来越高。通过信号转发器将室外GNSS信号引入室内,无须使用功分器对一体式GNSS接收机进行零基线测量。将GNSS接收机的双差伪距观测值和三差载波相位观测值进行统计,再对三台接收机零基线观测值进行方差估计,求得单台接收机伪距和载波相位观测值精度。对4种型号的GNSS接收机在相同时间段1h的全球定位系统(GPS)L1 C/A、L2,北斗卫星导航系统(BDS)B1I、B2I共4个频点的观测值精度进行了复现性实验,并统计大样本下4种不同型号GNSS接收机的观测值精度。结果表明,接收机在每日相同观测时间段1 h的观测值精度具有一致性。不同厂商的GNSS接收机在不同频点下的伪距和载波相位观测值精度存在差异。
With the widespread application of integrated global navigation satellite system(GNSS)receivers,users are increasingly paying attention to the precision of their measurements.The outdoor GNSS signal was introduced indoors through a signal transponder,without the need for a power divider to perform zero baseline measurement on the integrated GNSS receiver,and the double differenced pseudo-range measurement and triple differenced carrier phase measurement of the GNSS receivers were statistically analyzed.Then,variance estimation was performed on the zero baseline measurement of three receivers,so as to obtain the precision of pseudo-range and carrier phase measurements by a single receiver.Repeatability experiments were conducted on the measurement precision of global positioning system(GPS)L1C/A,L2,BeiDou satellite navigation system(BDS)B1I,and B2I at four frequency points over the same time period of one hour for four types of GNSS receivers,and the measurement precision of four different types of GNSS receivers with large samples was statistically analyzed.The results indicate that the measurement precision of the receiver is consistent during the same 1-hour time period every day,and the precision of pseudo-range and carrier phase measurements varies among GNSS receivers from different manufacturers at different frequency points.
作者
汪洋舰
彭友志
WANG Yangjian;PENG Youzhi(Key Laboratory of Earthquake Geodesy,China Earthquake Administration,Wuhan,Hubei 430071,China;Wuhan Secismic Metrological Verification&Surveying Engineering Institute,Wuhan,Hubei 430071,China)
出处
《北京测绘》
2024年第7期1058-1063,共6页
Beijing Surveying and Mapping
基金
湖北省自然科学基金(2021CFB515)。
关键词
信号转发器
伪距观测值精度
载波相位观测值精度
signal transponder
precision of pseudo-range measurement
precision of carrier phase measurement
