| 复杂地形条件下航空伽玛能谱地形改正方法探讨 |
| |
| 引用本文： | 万骏,刘庆成,于长春,孙亮,卢存恒,范正国,张文斌.复杂地形条件下航空伽玛能谱地形改正方法探讨[J].地球物理学报,2004,47(2):344-348. |
| |
| 作者姓名： | 万骏 刘庆成 于长春 孙亮 卢存恒 范正国 张文斌 |
| |
| 作者单位： | 苏州大学放射医学与公共卫生学院,苏州,215007;东华理工学院探测系,江西抚州,344000;中国国土资源航空物探遥感中心,北京,100083 |
| |
| 基金项目： | 中国地质调查局科研基金项目 ( 2 0 0 12 0 12 0 0 81) |
| |
| 摘 要： | 应用矩形辐射体航空伽玛辐射场理论，研究应用于复杂地形条件下的航空伽玛能谱资料的地形改正方法，并针对该方法进行验证. 本文利用航空物探测量过程中获得的DTM数据（达到了地形改正所需的地形起伏数据精度），应用矩形辐射体航空伽玛辐射场理论，根据地面辐射体与航空伽玛场分布之间的正演关系，对航空伽玛能谱解释方法的原理进行了正演分析和反演推导. 探索出一种按影响角进行地形改正的方法. 该方法特点是适合于任意飞行方式(缓地形和水平飞行均可)和任意地形条件航空伽玛能谱的逐点地形改正. 结果表明该地形改正方法能够基本消除航空伽玛能谱测量中的地形起伏产生的影响，经地形修正后的航空伽玛能谱异常能较正确地反映地面辐射体的真实情况.
|
| 关 键 词： | 航空伽玛能谱测量 地形改正 异常 照射量率 正演 反演 |
| 文章编号： | 0001-5733(2004)02-0344-05 |
| 收稿时间： | 2003-1-30 |
| 修稿时间： | 2003-11-13 |
A STUDY ON THE METHOD OF TERRAIN CORRECTION FOR AIRBORNE GAMMA-RAY SPECTROMETRY UNDER COMPLEX CONDITIONS |
| |
| WAN Jun LIU Qing-Cheng YU Chang-Chun SUN Liang LU Cun-Heng FAN Zheng-Guo ZHANG Wen-Bin School of Radiological Medicine and Public Health,Soochow University,Suzhou ,China East China Institute of Technology,Fuzhou ,China China Aerogeophysical Survey and Remote Sensing Center for Land and Resources,Beijing ,China.A STUDY ON THE METHOD OF TERRAIN CORRECTION FOR AIRBORNE GAMMA-RAY SPECTROMETRY UNDER COMPLEX CONDITIONS[J].Chinese Journal of Geophysics,2004,47(2):344-348. |
| |
| Authors: | WAN Jun LIU Qing-Cheng YU Chang-Chun SUN Liang LU Cun-Heng FAN Zheng-Guo ZHANG Wen-Bin School of Radiological Medicine and Public Health Soochow University Suzhou China East China Institute of Technology Fuzhou China China Aerogeophysical Survey and Remote Sensing Center for Land and Resources Beijing China |
| |
| Institution: | 1.School of Radiological Medicine and Public Health, Soochow University, Suzhou 215007, China 2 East China Institute of Technology, Fuzhou 344000, China 3 China Aerogeophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China |
| |
| Abstract: | Based on the theory of airborne gamma-radiation from a rectangular radiator, we study and test a terrain correction method for airborne gamma-ray energy spectrometry under complex topographic conditions. Using the DTM data acquired by airborne geophysical measurements and the forward relationship between radiator on the ground and the air gamma field distribution, we make forward analysis and inversion derivation for the interpretation principle of the airborne gamma energy spectrum. Then we propose a terrain correction method according to the influence angles. This method can be applied to terrain correction point by point for the airborne gamma energy spectrum in cases of any flight ways and arbitrary topographic conditions. The test result shows that this technique can basically eliminate topographic influences in measurements of airborne gamma-energy spectrum. After such terrain correction, the anomalies of the airborne gamma energy spectrum can reflect well the real situation of the radiator on the ground. |
| |
| Keywords: | Airborne Gamma-ray Spectrometry Terrain Correction Exposure rate Forward Inverse |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《地球物理学报》浏览原始摘要信息 |
| 点击此处可从《地球物理学报》下载免费的PDF全文 |
