LCR重力仪与CG-5重力仪的长基线混合标定
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摘要
2010-01-18—26日,在武汉、郑州、北京、沈阳4个高精度绝对重力点长基线上对8台LCR重力仪和4台CG-5重力仪进行了混合标定,标定结果表明:5台重力仪(其中4台为CG-5重力仪)显示出二次项的存在,但精度偏低。对于存在二次项的5台重力仪,一次项参数的单独标定结果均好于联合标定,其他重力仪的标定结果则基本保持不变。
The mixed calibration of 8 LCR and 4 CG-5 gravimeters carried out on the long baseline including 4 high precision absolute station of Wuhan,Zhengzhou,Beijing and Shenyang from May 5th to May 20th,2010 and from Jan 18th to Jan 26th,2010 is introduced.The results show that the quadratic terms exists in five gravimeters including all the 4 CG-5 gravimeter,but the precision of them is relatively low.If we only calibrate the first order term,the precision of the first order term of the five gravimeters is better than the joint calibration and for the other gravimeters it is basicallly invariant.
The mixed calibration of 8 LCR and 4 CG-5 gravimeters carried out on the long baseline including 4 high precision absolute station of Wuhan,Zhengzhou,Beijing and Shenyang from May 5th to May 20th,2010 and from Jan 18th to Jan 26th,2010 is introduced.The results show that the quadratic terms exists in five gravimeters including all the 4 CG-5 gravimeter,but the precision of them is relatively low.If we only calibrate the first order term,the precision of the first order term of the five gravimeters is better than the joint calibration and for the other gravimeters it is basicallly invariant.
引文
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10邢乐林,等.成都基准台绝对重力复测结果分析[J].大地测量与地球动力学,2008,(6):38-42.(Xing Lelin,et al.Analysis of repeat absolute gravity surveyingresults at Chengdu earthquake station[J]Journal ofGeodesy and Geodynamics,2008,(6):38-42)
2李辉,等.滇西地区重力场动态变化计算[J].地壳形变与地震,2000,(1):60-66.(Li Hui,et al.Computationon dynamic gravity changes in the western area of Yunnanprovince[J].Crustal Deformationa and Earthquake,2000,(1):60-66)
3贾民育,邢灿飞,孙少安.滇西实验场重力资料的最佳解[J].地震学报,1994,16(增刊):100-108.(Jia Minyu,Xing Canfei and Sun Shaoan.Optimum solution of thegravitational data in the Western Yunnan experimentalfield[J].Acta Seismological Sinia,1994,16(Supp.):100-108)
4郝洪涛,等.基于重力差方法检测重力仪一次项格值系数变化[J].大地测量与地球动力学,2011,(1):87-90.(Hao Hongtao,et al.Study on change of scale parametersin liner term of gravimeter with gravity differencemethod[J].Journal of Geodesy and Geodynamics,2011,(1):87-90)
5孙少安,项爱民,吴维日.LCR-G型重力仪仪器参数的时变特征[J].大地测量与地球动力学,2002,(2):101-105.(Sun Shaoan,Xiang Aimin and Wu Weiri.Timevaring characteristic of LCR-G gravimeterparameters[J].Journal of Geodesy and Geodynamics,2002,(2):101-105)
6刘冬至.绝对与相对重力同步比测中的拉科斯特重力仪标定[J].大地测量与地球动力学,1998,(1):88-94.(Liu Dongzhi.Calibration of Lacoste-Romberggravitmeter in absolute and relative gravimetricconjunction[J].Journal of Geodesy and Geodynamics,1998,(1):88-94)
7刘冬至,等.《2000国家重力基本网》短基线的检定与分析[J].大地测量与地球动力学,2002,(4):61-65.(LiuDongzhi,et al.Verification and analysis of shortcalibration lines of 2000 national gravity network[J].Journal of Geodesy and Geodynamics,2002,(4):61-6)
8卢红艳,等.利用实测资料确定LCR重力仪的线性格值和周期误差参数[J].地震地磁观测与研究,2004,25(4):20-25.(Lu Hongyan,et al.Determination oflinear and periodic error parameters for the scale value ofLCR gravimeters by observed gravity data[J].Seismological and Geomagnetic Observation andResearch,2004,25(4):20-25)
9邢乐林,等.CG25重力仪零漂特性研究[J].地震学报,2010,32(3):369-373.(Xing Lelin,et al.Study on zerodrift characteristic of CG-5 gravimeter[J].ActaSeismological Sinia,2010,32(3):369-373)
10邢乐林,等.成都基准台绝对重力复测结果分析[J].大地测量与地球动力学,2008,(6):38-42.(Xing Lelin,et al.Analysis of repeat absolute gravity surveyingresults at Chengdu earthquake station[J]Journal ofGeodesy and Geodynamics,2008,(6):38-42)
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