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在地球动力学和地震预测预报研究领域中,在处理GPS数据时,发现测站周围环境干扰是影响GPS定位精度的主要环境因素之一,会对GPS接收机的定位结果造成影响。本文根据四川省GPS观测网络地震监测网的连续性等特点,通过对观测网中2014~2015年参考站的数据进行处理,发现宁南基准站数据处理结果在某一时段存在突跳现象,通过对数据处理结果的进一步分析研究发现,测站附近广播信号塔的信号发射对GPS信号接收存在干扰。
In the field of geodynamics and earthquake prediction and forecasting, it is found that interference with the environment around the station is one of the major environmental factors affecting the GPS positioning accuracy when processing GPS data, which will affect the positioning result of the GPS receiver. According to the continuity of seismic monitoring network of GPS observation network in Sichuan Province, this paper deals with the data of reference stations from 2014 to 2015 in observing network, and found that the data processing results of Ningnan base station have sudden jump in a certain period, Further analysis of the results of data processing has found that the signal transmission near the broadcasting tower in the vicinity of the station interferes with the GPS signal reception.