Stability analysis of calibration field for GNSS receiver in Nanning City,Guangxi Province
The baseline field for global navigation satellite system(GNSS)receiver calibration in Nanning City,Guangxi Province was built from 2001 to 2003 and upgraded in 2018.It is the only GNSS receiver calibration field passed by high-speed rail in China.The calibration field is divided into medium-long baseline field,short baseline field and ultra-short baseline field,among which eight observation piers are built in the medium-long baseline and short baseline fields,and seven observation piers are built in the ultra-short baseline field.The reliability and stability of the calibration baseline field of GNSS receiver in Nanning City,Guangxi Province are judged in this paper by combing the baseline length data of the men-tioned field in the past ten years,obtaining the changes of length and accuracy each time,and analyzing the data before and after the renovation.
GNSSreceiver calibrationmedium-long baseline fieldshort baseline fieldultra-short base-line field