| GT-2A航空重力仪精度评定 |
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| 引用本文： | 宛家宽,罗志才,刘站科.GT-2A航空重力仪精度评定[J].大地测量与地球动力学,2017,37(10):1096-1100. |
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| 作者姓名： | 宛家宽 罗志才 刘站科 |
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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1 mGal，外符合精度在实验区A优于2 mGal，在实验区B优于3 mGal。
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| 关 键 词： | GT-2A航空重力仪 重力扰动 精度评定 重力延拓 交叉点平差 |
Evaluating the Precision of GT-2A Airborne Gravimeter Measurements |
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| WAN Jiakuan,LUO Zhicai,LIU Zhanke.Evaluating the Precision of GT-2A Airborne Gravimeter Measurements[J].Journal of Geodesy and Geodynamics,2017,37(10):1096-1100. |
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| Authors: | WAN Jiakuan LUO Zhicai LIU Zhanke |
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| Abstract: | 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 1 mGal, while its external precision is less than 2 mGal in zone A, and 3 mGal in zone B. |
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| Keywords: | GT-2A airborne gravimeter gravity disturbance precision evaluation gravity continuation crossover adjustment |
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