高频GPS数据的单点精密定位法在测震学中的应用
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摘要
使用武汉大学提供的PANDA软件,对高频GPS数据利用非差精密定位方法进行处理。对观测点记录到的代表不同震级及震中距的几个地震的高频GPS数据分析结果和地震仪进行同震效应的对比分析。结果表明:GPS可以很好的测量地震时期的地震波信号,同时对地表的永久性位移也有一定的反映,可以发展成为新型的GPS地震仪。GPS高频数据对于震级大、震源深的地震其捕获能力更强。GPS高频数据可以对测点强震仪起到很好的补充作用,但其处理软件的精度和模型还有待于进一步的提高。
Using the PANDA software provided by Wuhan University and non-difference precision positioning method,this article processed high frequency GPS data,and done a comparative analysis of the coseismic effects of several earthquakes with different magnitude and epicentral distance,which recorded by high-frequency GPS data and seismograph data.The results show that GPS can be good for measuring seismic signals,have a certain reflection on permanent displacement of the surface.So it can be developed to become a new GPS seismometer.High-frequency GPS data have stronger ability in capturing earthquakes with large magnitude and focal depth,and it can play a complementary role for strong motion seismograph.But its accuracy and precessing model of software should be further improved.
Using the PANDA software provided by Wuhan University and non-difference precision positioning method,this article processed high frequency GPS data,and done a comparative analysis of the coseismic effects of several earthquakes with different magnitude and epicentral distance,which recorded by high-frequency GPS data and seismograph data.The results show that GPS can be good for measuring seismic signals,have a certain reflection on permanent displacement of the surface.So it can be developed to become a new GPS seismometer.High-frequency GPS data have stronger ability in capturing earthquakes with large magnitude and focal depth,and it can play a complementary role for strong motion seismograph.But its accuracy and precessing model of software should be further improved.
引文
[1]方荣新,施闯,陈克杰,等.GPS地震仪:PANDA软件测试结果与验证[J].武汉大学学报.信息科学版,2011,36(4):453-456.
[2]孟国杰,任金卫,金红林,等.GPS高频数据处理方法及其在地震学中的应用研究进展[J].国际地震动态,2007,(7):26-31.
[3]韦建超.GPS精密单点定位的数据处理研究[D].南京:中南大学地图制图学与地理信息工程,2007.
[4]涂克楠.GPS精密单点定位数据处理[D].合肥:合肥工业大学大地测量学与测量工程,2009.
[5]赵齐乐,刘经南,葛茂荣,等.用PANDA对GPS和CHAMP卫星精密定轨[J].大地测量与地球动力学,2005,25(2):113-117.
[6]刘伟平,郝金明,汪平.标准单点定位与精密单点定位精度对比研究[J].测绘通报,2010,(4):5-7.
[7]耿涛,赵齐乐,刘经南,等.基于PANDA软件的实时精密单点定位研究[J].武汉大学学报.信息科学版,2007,32(4):312-316.
[2]孟国杰,任金卫,金红林,等.GPS高频数据处理方法及其在地震学中的应用研究进展[J].国际地震动态,2007,(7):26-31.
[3]韦建超.GPS精密单点定位的数据处理研究[D].南京:中南大学地图制图学与地理信息工程,2007.
[4]涂克楠.GPS精密单点定位数据处理[D].合肥:合肥工业大学大地测量学与测量工程,2009.
[5]赵齐乐,刘经南,葛茂荣,等.用PANDA对GPS和CHAMP卫星精密定轨[J].大地测量与地球动力学,2005,25(2):113-117.
[6]刘伟平,郝金明,汪平.标准单点定位与精密单点定位精度对比研究[J].测绘通报,2010,(4):5-7.
[7]耿涛,赵齐乐,刘经南,等.基于PANDA软件的实时精密单点定位研究[J].武汉大学学报.信息科学版,2007,32(4):312-316.
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