GPS数据用于地震短临预测的数据处理初步探索

Tentative exploration of usage of GPS data in short-impending earthquake prediction

目前，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，一般利用精度比较高的每周解（7天解）结果，由于时间较长，每周解只能为中长期的地震预测提供服务，而不能为短期的地震预测提供服务。本文根据北京市GPS地震监测网的高密度和连续性的特点，通过控制影响GPS精度定位因素，对1～7天解的时间序列、相关系数、点位平均精度进行对比分析，研究表明，3天解以上的结果在点位精度、最终的时序变化等指标上都能达到地震短临分析工作的要求。

Nowadays people who studying in geodynamic and earthquake prediction field often process GPS data by week solution for attaining the best precision. Because a week is little long time, so the week solution can only severed for long and moderate interval earthquake prediction. Based on the high density and continuity character of Beijing GPS net, through control the factors that influence the precision of the GPS data procession, the possibility of keep the same precision of the GPS data procession as week solution , meanwhile reduce the week solution to the 2-days or 4-days solution are discussed in this artical. At last we obtained some good results.