GT-2A航空重力仪精度评定
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摘要
选择地形平坦的实验区A和地形起伏较大的实验区B,采用GT-2A航空重力测量数据和高精度地面重力测量数据,依据测线网交叉点平差方法评定GT-2A航空重力仪的内符合精度,通过地面重力与航空重力延拓结果的比对实验评定其外符合精度。结果表明,GT-2A重力扰动测量结果的内符合精度优于1mGal,外符合精度在实验区A优于2mGal,在实验区B优于3mGal。
Our research is based on the airborne gravity data from GT-2A gravimeter and the high-precision ground gravity data collected in two areas,marked as A,which is flat,and B,which is steep.We calculate the internal precision of GT-2A gravimeter by network crossover adjustment,and evaluate its external precision by comparing the continuation results of airborne and ground gravity data.The results show that the inner precision of GT-2A gravimeter is less than 1mGal,while its external precision is less than 2mGal in zone A,and 3mGal in zone B.
Our research is based on the airborne gravity data from GT-2A gravimeter and the high-precision ground gravity data collected in two areas,marked as A,which is flat,and B,which is steep.We calculate the internal precision of GT-2A gravimeter by network crossover adjustment,and evaluate its external precision by comparing the continuation results of airborne and ground gravity data.The results show that the inner precision of GT-2A gravimeter is less than 1mGal,while its external precision is less than 2mGal in zone A,and 3mGal in zone B.
引文
[1]王丽红.航空重力测量中载体矢量加速度的确定方法[D].郑州:信息工程大学,2008(Wang Lihong.Determination of Vector Acceleration for Airborne Vector Gravimetry[D].Zhengzhou:Information Engineering University,2008)
[2]王静波.航空重力测量数据处理方法技术研究[D].北京:中国地质大学(北京),2010(Wang Jingbo.Methodologies and Technology of Data Processing for Airborne Gravimetry[D].Beijing:China University of Geosciences,2010)
[3]Mueller F,Mayer-Guerr T.Comparison of Downward Continuation Methods of Airborne Gravimetry Data[A]//A Window on the Future of Feodesy[M].Berlin Heidelberg:Springer,2005
[4]欧阳永忠,邓凯亮,陆秀平,等.多型航空重力仪同机测试及其数据分析[J].海洋测绘,2013,33(4):6-11(Ouyang Yongzhong,Deng Kailiang,Lu Xiuping,et al.Tests of Multi-type Airborne Gravimeters and Data Analysis[J].Hydrographic Surveying and Charting,2013,33(4):6-11)
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[7]Olson D.GT-1A and GT-2A Airborne Gravimeters:Improvements in Design,Operation and Processing from 2003to 2010[C].ASEG-PESA Airborne Gravity 2010 Workshop,Sydney,2010
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[9]蔡劭琨.航空重力测量网络平差方法研究[D].长沙:国防科学技术大学,2009(Cai Shaokun.Research on the Network Adjustment of Airborne Gravimetry[D].Changsha:National University of Defense Technology,2009)
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[11]周波阳,罗志才,许闯,等.航空重力数据向下延拓的FFT快速算法比较[J].大地测量与地球动力学,2013,33(1):64-73(Zhou Boyang,Luo Zhicai,Xu Chuang,et al.Comparison among Fast Fourier Transform Algorithms for Downward Continuation of Airborne Gravity Data[J].Journal of Geodesy and Geodynamics,2013,33(1):64-73)
[12]徐世浙.迭代法与FFT法位场向下延拓效果的比较[J].地球物理学报,2007,50(1):285-289(Xu Shizhe.A Comparison of Effects between the Iteration Method and FFT for Downward Continuation of Potential Fields[J].Chinese Journal of Geophysics,2007,50(1):285-289)
[13]罗志才,陈永奇,宁津生.地形对确定高精度局部大地水准面的影响[J].武汉大学学报:信息科学版,2003,28(3):340-344(Luo Zhicai,Chen Yongqi,Ning Jinsheng.Effect of Terrain on the Determination of High Precise Local Gravimetric Geoid[J].Geomatics and Information Science of Wuhan University,2003,28(3):340-344)
[14]欧阳永忠,邓凯亮,黄谟涛,等.重力异常延拓积分半径的选择及远区效应[J].海洋测绘,2011,31(4):5-12(Ouyang Yongzhong,Deng Kailiang,Huang Motao et al.The Choice of Integral Radius and Its Far-Zone Effects in the Continuation of the Gravity Anomaly[J].Hydrographic Surveying and Charting,2011,31(4):5-12)
[15]Martinec Z.Stability Investigation of a Discrete Downward Continuation Problem for Geoid Determination in the Canada Rocky Mountains[J].Journal of Geodesy,1996,70(11):805-828
[2]王静波.航空重力测量数据处理方法技术研究[D].北京:中国地质大学(北京),2010(Wang Jingbo.Methodologies and Technology of Data Processing for Airborne Gravimetry[D].Beijing:China University of Geosciences,2010)
[3]Mueller F,Mayer-Guerr T.Comparison of Downward Continuation Methods of Airborne Gravimetry Data[A]//A Window on the Future of Feodesy[M].Berlin Heidelberg:Springer,2005
[4]欧阳永忠,邓凯亮,陆秀平,等.多型航空重力仪同机测试及其数据分析[J].海洋测绘,2013,33(4):6-11(Ouyang Yongzhong,Deng Kailiang,Lu Xiuping,et al.Tests of Multi-type Airborne Gravimeters and Data Analysis[J].Hydrographic Surveying and Charting,2013,33(4):6-11)
[5]Wooldridge A.GT-1A Airborne Gravity:A Case History over the Vredefort Dome,South Africa[C].ASEG Airborne Gravity Workshop,Sydney,2004
[6]Wooldridge A.Review of Modern Airborne Gravity Focusing on Results from GT-1A Surveys[J].First Break,2010,28(5):85-92
[7]Olson D.GT-1A and GT-2A Airborne Gravimeters:Improvements in Design,Operation and Processing from 2003to 2010[C].ASEG-PESA Airborne Gravity 2010 Workshop,Sydney,2010
[8]周波阳,罗志才,钟波,等.航空重力测量的数据归算方法[J].大地测量与地球动力学,2015,35(2):336-341(Zhou Boyang,Luo Zhicai,Zhong Bo,et al.Data Reduction Methods of Airborne Gravimetry[J].Journal of Geodesy and Geodynamics,2015,35(2):336-341)
[9]蔡劭琨.航空重力测量网络平差方法研究[D].长沙:国防科学技术大学,2009(Cai Shaokun.Research on the Network Adjustment of Airborne Gravimetry[D].Changsha:National University of Defense Technology,2009)
[10]卢雪盈,柳林涛,梁星辉,等.航空重力数据向下延拓的逆泊松积分算法[J].大地测量与地球动力学,2015,35(6):919-922(Lu Xueying,Liu Lintao,Liang Xinghui,et al.The Inverse Possion Integral Algorithm for Downward Continuation of Airborne Gravity Data[J].Journal of Geodesy and Geodynamics,2015,35(6):919-922)
[11]周波阳,罗志才,许闯,等.航空重力数据向下延拓的FFT快速算法比较[J].大地测量与地球动力学,2013,33(1):64-73(Zhou Boyang,Luo Zhicai,Xu Chuang,et al.Comparison among Fast Fourier Transform Algorithms for Downward Continuation of Airborne Gravity Data[J].Journal of Geodesy and Geodynamics,2013,33(1):64-73)
[12]徐世浙.迭代法与FFT法位场向下延拓效果的比较[J].地球物理学报,2007,50(1):285-289(Xu Shizhe.A Comparison of Effects between the Iteration Method and FFT for Downward Continuation of Potential Fields[J].Chinese Journal of Geophysics,2007,50(1):285-289)
[13]罗志才,陈永奇,宁津生.地形对确定高精度局部大地水准面的影响[J].武汉大学学报:信息科学版,2003,28(3):340-344(Luo Zhicai,Chen Yongqi,Ning Jinsheng.Effect of Terrain on the Determination of High Precise Local Gravimetric Geoid[J].Geomatics and Information Science of Wuhan University,2003,28(3):340-344)
[14]欧阳永忠,邓凯亮,黄谟涛,等.重力异常延拓积分半径的选择及远区效应[J].海洋测绘,2011,31(4):5-12(Ouyang Yongzhong,Deng Kailiang,Huang Motao et al.The Choice of Integral Radius and Its Far-Zone Effects in the Continuation of the Gravity Anomaly[J].Hydrographic Surveying and Charting,2011,31(4):5-12)
[15]Martinec Z.Stability Investigation of a Discrete Downward Continuation Problem for Geoid Determination in the Canada Rocky Mountains[J].Journal of Geodesy,1996,70(11):805-828