PPP与GAMIT/TRACK在地震监测中的应用

英文篇名：Application PPP of and GAMIT/TRACK module in earthquake monitoring
中文刊名：测绘科学
英文刊名：Science of Surveying and Mapping
作者：范士杰 ; 刘焱雄 ; 张健
英文作者：FAN Shi-jie①②③④ ; LIU Yan-xiong③ ; ZHANG Jian③(①School of Geodesy and Geomatics ; Wuhan University ; Wuhan 430079 ; China ; ②School of Geosciences ; China University of Petroleum ; Shandong Qingdao 266555 ; China ; ③First Institute of Oceanography ; State Oceanic Administration ; Shandong Qingdao 200061 ; China ; ④Key Laboratory of Surveying and Mapping Technology on Island and Reef ; State Bureau of Surveying and Mapping ; Shandong Qingdao 266510 ; China)
中文关键词：精密单点定位 ; 双差定位 ; 地震监测 ; 精密星历和钟差
英文关键词：Precise Point Positioning ; double difference positioning ; earthquake monitoring ; precise satellite ephemeris and clock offset
出版日期：2013-03-20
机构：武汉大学测绘学院;中国石油大学地球科学与技术学院;国家海洋局第一海洋研究所;海岛(礁)测绘技术国家测绘局重点实验室;
年：2013
期：02
出版单位：测绘科学

摘要

本文基于非差精密单点定位(PPP)和双差定位模式,采用研制的UNIP软件和GAMIT/TRACK运动学分析模块,对GPS技术在地震监测中的应用进行研究。利用IGS不同精度和时延的星历和钟差产品,分析了卫星轨道和钟差对两种软件动态定位结果的影响;采用不同的数据处理方案,分别提取GPS同震地表形变信息。结果表明:GAMIT/TRACK模块精密动态定位的实时性,更适用于地震等突发事件中的GPS快速响应;如果能够提供精确的卫星钟差,UNIP软件的高程精度明显优于GAMIT/TRACK模块,技术将更显优势。
Based on Precise Point Positioning(PPP) and double difference positioning models,the application of developed UNIP software and GAMIT/TRACK module in earthquake monitoring were researched in the paper.Using IGS satellite ephemeris and clock products of different precision and delay,the influences on GPS kinematic positioning of satellite orbit and clock offset were analyzed.With different data processing scheme,this paper extracted co-seismic surface deformation information.The results showed that the real-time of precise kinematic positioning with GAMIT/TRACK is more applicable for earthquake emergency and GPS fast responses.If accurate satellite clock offset could be provided,the elevation precision with UNIP is obviously better than GAMIT/TRACK module,and Precise Point Positioning(PPP) technology would show more advantage.

引文

[1]国家重大科学工程“中国地壳运动观测网络”项目组.GPS测定的2008年汶川Ms8.0级地震的同震位移场[J].中国科学D辑:地球科学,2008,38(10).
    [2]殷海涛,张培震,甘卫军,等.高频GPS测定的汶川Ms8.0级地震震时近场地表变形过程[J].科学通报,2010,55(26):2621-2626.
    [3]王敏,李强,王凡,等.全球定位系统测定的2011年日本宫城Mw9.0级地震远场同震位移[J].科学通报,2011,56(20):1593-1596.
    [4]方荣新,施闯,辜声峰.基于动态定位技术的同震地表形变分析[J].武汉大学学报(信息科学版),2009,34(11):1340-1343.
    [5]肖根如,甘卫军,殷海涛.GIPSY软件的GPS数据处理策略及应用[J].地球物理学进展,2010,25(4).
    [6]叶世榕.GPS非差相位精密单点定位理论与实现:博士学位论文[D].武汉:武汉大学,2002.
    [7]Boehm J,Niell A,Tregoning P,et al.Global Mapping Function(GMF):A new empirical mapping function based on numerical weather model data[J].Geophys Res Lett,2006,33:L07304.
    [8]King R W,Bock Y.Documentation for the GAMIT GPS Analysis Software[M].Release10.2.Cambridge:Mas-sachusetts Institute of Technology,2004.
    [9]Boehm J,Heinkelmann R,Schuh H.A global model of pressure and temperature for geodetic applicationa[J].J Geodesy,2007,81(10):679-683.
    [10]Lyard F,Lefevre F,Letellier T,et al.Modelling the global ocean tides:modern insights from FES2004[J].Ocean Dyn,2006,56(5-6):394-415.