重力场的局部虚拟向下延拓以及利用EGM96模型的模拟实验检验

基金项目: 国家自然科学基金资助项目(40174004,40574004);武汉大学地球空间环境与大地测量教育部重点实验室开放研究基金(测绘基础研究)资助项目(03-04-13);国家教育部留学回国人员科研启动基金资助项目

详细信息

Local Fictitious Downward Continuation of Gravity Field and Simulation Experiment Tests Using EGM96 Model

¹ School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road, Wuhan 430079,China;² Laboratory of Geospace Environment and Geodesy,Ministry of Education,Wuhan University,129 Luoyu Road,Wuhan 430079,China

Funds: 国家自然科学基金资助项目(40174004,40574004);武汉大学地球空间环境与大地测量教育部重点实验室开放研究基金(测绘基础研究)资助项目(03-04-13);国家教育部留学回国人员科研启动基金资助项目

摘要: 阐述了基于虚拟压缩恢复法导出的虚拟向下延拓法,该法从理论上解决了重力场的向下延拓问题。为了检验理论的正确性,选取EGM96模型进行了模拟实验检验,实验结果支持局部虚拟向下延拓法。同时,对观测值加进随机误差的情形也进行了模拟实验检验,结果表明,局部虚拟向下延拓几乎不损失精度。
- 重力场的虚拟向下延拓 /
- 局部虚拟向下延拓 /
- EGM96模型 /
- 模拟实验检验 /
- 随机误差模拟实验
Abstract: Based on the fictitious compress recovery approach the fictitious downward continuation is clarified,which has theoretically solved the downward continuation of gravity field.To test the correction of the theory,simulation experiments are executed using EGM96 model.Simulation experiment results support the local fictitious downward continuation approach.Meanwhile,in the case that the observation values contain random errors,the simulation experiment tests show that the local fictitious downward continuation approach is stable,almost not losing the accuracy.
- fictitious downward continuation of gravity field /
- local fictitious downward continuation /
- EGM96 model /
- simulation experiment tests /
- random error simulation test