高频GPS数据处理方法比较及在地震学中的应用
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摘要
分析比较双差网解、精密单点定位与非差网解三种高频GPS动态数据处理方法的特点,采用贵州省CORS网1Hz GPS观测数据对3种不同定位方法进行验证分析,结果表明基线长度为100km左右时,3种定位模式水平方向的动态定位结果为同一精度水平,为1~2cm。采用美国加州圣西蒙6.5级地震1Hz GPS观测数据分析双差网解模式的TRACK软件与精密单点定位模式的PANDA软件的动态定位表现。结果表明,PANDA软件的定位精度已达到TRACK软件的精度水平。
This paper analyzes and compares the characteristics of three kinematic processing methods of high-frequency GPS data:double difference network solution,precision point positioning and zero-difference network solution.The1 Hz GPS data of CORS network in Guizhou was used to test the three different positioning modes andthe results show that the kinematic positioning precisions of the three positioning modes in the horizontal direction are in the same levels,which is about 1~2 cm when the baseline lengths is about100 km.Thedynamic positioning performance comparisonbetween PANDA,which adopts PPP,and TRACK,which uses 1 Hz GPS data of Mw 6.5 SanSiMeon earthquake in California, USAto analyze the double difference network solution,shows that the accuracy of the PANDA software has reached TRACK software in single-epoch solution and PANDA could be competent for domestic GPS seismology research.
This paper analyzes and compares the characteristics of three kinematic processing methods of high-frequency GPS data:double difference network solution,precision point positioning and zero-difference network solution.The1 Hz GPS data of CORS network in Guizhou was used to test the three different positioning modes andthe results show that the kinematic positioning precisions of the three positioning modes in the horizontal direction are in the same levels,which is about 1~2 cm when the baseline lengths is about100 km.Thedynamic positioning performance comparisonbetween PANDA,which adopts PPP,and TRACK,which uses 1 Hz GPS data of Mw 6.5 SanSiMeon earthquake in California, USAto analyze the double difference network solution,shows that the accuracy of the PANDA software has reached TRACK software in single-epoch solution and PANDA could be competent for domestic GPS seismology research.
引文
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[7] Lou Yidong,Zhang Weixing,Shi Chuang,et al.High-rate(1Hz and 50Hz)GPS Seismology:Application to the 2013 Mw6.6 Lushan Earthquake[J].Journal of Asian Earth Sciences,2014,79:426-431
[8]王亚辉,孙中豪,王晓南.GPS动态精密单点定位与差分定位结果比较[J].测绘地理信息,2015,40(2):47-49
[9] Ge M R,Gendt G,Rothacher M,et al.Resolution of GPS Carrier-phase Ambiguities in Precise Point Positioning(PPP)with Daily Observations[J].Journal of Geodesy,2008,82(7):389-399
[10]Geng J,Meng X,Dodson A H,et al.Integer Ambiguity Resolution in Precise Point Positioning:Method Comparison[J].Journal of Geodesy,2010,84(9):569-581
[11]贺小星,花向红,周世健.GPS时间序列中异常周期信号影响机制分析[J].测绘地理信息,2014,39(2):22-26
[2] Dragert H,Wang K,James T S.A Silent Slip Event on the Deeper Cascadia Subduction Interface[J].Science 2001,292(5 521):1 525-1 528
[3] Larson K M,Lowry A R,Kostoglodov V,et al.Crustal Deformation Measurements in Guerrero,Mexico[J].Journal of Geophysical Research Solid Earth,2004,B04409,doi:10.1029/2003JB002843
[4]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
[5]方荣新.高采样率GPS数据非差精密处理方法及其在地震学中的应用研究[D].武汉:武汉大学,2010
[6] Shi C,Lou Y,Zhang H,et al.Seismic Deformation of the Mw8.0 Wenchuan Earthquake from High-Rate GPS Observations[J].Advance in Space Research,2010,46(2):228-235
[7] Lou Yidong,Zhang Weixing,Shi Chuang,et al.High-rate(1Hz and 50Hz)GPS Seismology:Application to the 2013 Mw6.6 Lushan Earthquake[J].Journal of Asian Earth Sciences,2014,79:426-431
[8]王亚辉,孙中豪,王晓南.GPS动态精密单点定位与差分定位结果比较[J].测绘地理信息,2015,40(2):47-49
[9] Ge M R,Gendt G,Rothacher M,et al.Resolution of GPS Carrier-phase Ambiguities in Precise Point Positioning(PPP)with Daily Observations[J].Journal of Geodesy,2008,82(7):389-399
[10]Geng J,Meng X,Dodson A H,et al.Integer Ambiguity Resolution in Precise Point Positioning:Method Comparison[J].Journal of Geodesy,2010,84(9):569-581
[11]贺小星,花向红,周世健.GPS时间序列中异常周期信号影响机制分析[J].测绘地理信息,2014,39(2):22-26