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实时GNSS地震仪系统实现及精度分析

DOI: 10.6038/cjg20130209, PP. 450-458

Keywords: GNSS地震仪,实时精密单点定位,PANDA软件,海啸预警

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Abstract:

高频GNSS数据实时精密单点定位(RTPPP)可实时获得地表瞬时动态形变和地震波信号,为地震参数快速确定、地震快速响应及海啸预警提供实时的观测资料.本文构建了实时GNSS地震仪系统,主要包括RTPPP和实时探测两部分.利用RTPPP方法处理了模拟的震动实验平台实验数据和2010年BajaCalifornia地震的数据,并与惯导(IMU)、事后PPP和差分相对定位结果比较,定量评估了实时GNSS地震仪系统的精度.结果表明,该系统可实现水平方向优于1cm,高程方向优于3cm的实时定位,且对BajaCalifornia地震的实时探测结果与南加州地震数据中心公布的结果相一致.

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