| 平台式重力仪航空重力测量数据后处理技术研究 |
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| 引用本文： | 闫方,胡平华,赵明,姜作喜,罗锋,唐江河,刘东斌.平台式重力仪航空重力测量数据后处理技术研究[J].导航定位于授时,2019,6(3):52-61. |
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| 作者姓名： | 闫方 胡平华 赵明 姜作喜 罗锋 唐江河 刘东斌 |
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| 作者单位： | 北京自动化控制设备研究所,北京,100074;中国国土资源航空物探遥感中心,北京,100083 |
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| 基金项目： | 国家重点研发计划（2017YFC0601702）；国家自然科学基金重大科研仪器研制项目（41527803） |
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| 摘 要： | 针对航空重力测量对数据后处理的要求,结合平台式重力仪系统的组成与工作原理,在重力异常信号的频域特征基础上,设计出一套有严格频域规范的航空重力数据后处理流程,并对某海域实测数据进行了处理。结果表明,重力异常值内符合精度为12条东西测线达到0.43mGal/140s和0.84mGal/100s,4条南北测线达到0.39mGal/140s和0.79mGal/100s;以同测线GT-2A单次测量结果为标准值统计标准差,12条东西测线为0.72mGal/140s和0.98mGal/100s,4条南北测线为1.41mGal/140s和1.53mGal/100s。结果表明,设计的航空重力测量数据后处理方法可以实现重力异常信号的高精度提取。
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| 关 键 词： | 平台式重力仪 航空重力测量 重力数据后处理 FIR滤波 |
Research on Airborne Gravity Measurement Data Processing of Inertial Stabilized Platform Gravimeter |
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| YAN Fang,HU Ping-hu,ZHAO Ming,JIANG Zuo-xi,LUO Feng,TANG Jiang-he and LIU Dong-bin.Research on Airborne Gravity Measurement Data Processing of Inertial Stabilized Platform Gravimeter[J].Navigation Positioning & Timing,2019,6(3):52-61. |
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| Authors: | YAN Fang HU Ping-hu ZHAO Ming JIANG Zuo-xi LUO Feng TANG Jiang-he and LIU Dong-bin |
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| Institution: | Beijing Institute of Automatic Control Equipment, Beijing 100074, China,Beijing Institute of Automatic Control Equipment, Beijing 100074, China,Beijing Institute of Automatic Control Equipment, Beijing 100074, China,China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing 100083, China,China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing 100083, China,Beijing Institute of Automatic Control Equipment, Beijing 100074, China and Beijing Institute of Automatic Control Equipment, Beijing 100074, China |
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| Abstract: | According to the requirements of airborne gravity measurement for data post-processing, a set of post-processing procedures for airborne gravity data based on the frequency domain characteristics of gravity anomaly signals is designed, which is strictly normative in frequency domain. Processed results of the repeated measurements from a sea area show that the accuracy of coincidence precision about the airborne gravity anomalies is 0.43mGal/140s and 0.84mGal/100s for twelve east-west lines, 0.39mGal/140s and 0.79mGal/100s for four south-north lines, and the standard deviation of statistics by taking the single measurement result of GT-2A as the standard values is 0.72mGal/140s and 0.98mGal/100s for twelve east-west lines, 1.41mGal/140s and 1.53mGal/100s for four south-north lines. Thus, the proposed procedures can be used to extract gravity anomaly signal. |
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| Keywords: | Inertial stabilized platform gravimeter Airborne gravimetry Data processing of gravity measurement FIR filtering |
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