GNSS天线相位中心偏差检定及不确定度分析

GNSS天线相位中心偏差是GNSS天线接收卫星信号的电气中心与其机械几何中心之差。相位偏差具有一定的稳定性，呈现系统误差性质。现行规程将相位偏差按限差要求加以检测，而没有按系统误差加以检定并进行改正，本文对规程的检定方法加以改进，定量检定天线相位偏差半径r和偏差角a，并依据r值的大小，给出相位偏差在GNSS测量中的采用原则，对两种改进方法进行了测量不确定度分析。

Calibrate GNSS Antenna Phase Center Deviation and Analyze Uncertainty

GNSS antenna phase center deviation is the differ- ence between GNSS antenna for satellite reception electrical center and the geometric center of machinery. Phase deviation has certain stability, which presents the nature of the system er- ror. Current regulations will phase deviation according to the re- quirements of tolerance to test, but not according to system er- ror detection and correction. In this paper, the procedure of veri- fication method is improved, the quantitative detection of radius r and the deviation angle of antenna phase deviation a are done. According to the size of the r value, the phase deviation is given in GNSS measurements adopted in principle.