基于空间分析的航空物探专题底图制作方法——以达州—华蓥测区为例  

The method of making the airborne geophysical thematic base-map based on spatial analysis: Exemplified by the Dazhou-Huaying survey area

作　　者：张琦洁 闫红雨 张婷婷 吴云 高姗 ZHANG Qi-Jie;YAN Hong-Yu;ZHANG Ting-Ting;WU Yun;GAO Shan(China Aero Geophysical Survey and Remote Sensing Center for Natural Resource,Beijing 100083,China;Key Laboratory of Airborne Geophysics and Remote Sensing Geology,Ministry of Natural and Resources,Beijing 100083,China;China University of Geosciences(Beijing),Beijing 100083,China)

机构地区：[1]中国自然资源航空物探遥感中心,北京100083 [2]自然资源部航空地球物理与遥感地质重点实验室,北京100083 [3]中国地质大学(北京)土地科学技术学院,北京100083

出　　处：《物探与化探》2022年第5期1251-1257,共7页Geophysical and Geochemical Exploration

基　　金：自然资源部航空地球物理与遥感地质重点实验室课题(2020YFL10)。

摘　　要：地理底图是航空物探专题图的重要基础环节及组成部分,但以往人工手动抽稀处理方法较为繁琐。本文对航空物探专题底图的作用和现状问题进行分析,引入空间分析方法,借助1∶25万公众版地形数据库进行规划底图编制实践,完成地理要素矢量化。以四川省达州—华蓥测区为例进行测试,证实该方法制作的地理底图简便实用,相比以往处理方法,更加智能化,且制作成果快速准确,符合相关精度要求;此方法为航空物探专题图的精准制作提供了有力支撑,方便用户使用,同时也为航空物探的发展奠定了一定基础。Geographical base map is an important basic step and component of airborne geophysical thematic map;nevertheless, the previous treatment methods seem to be rather complicated. This paper analyzes the function and present situation of the thematic base map of aero geophysical exploration and introduces the spatial analysis method. With 1∶250 000 public versions of terrain data, this paper discusses the idea and method of compiling the thematic base map of aerial geophysical exploration, and completes the vectorization of geographical elements. The Dazhou-Huaying survey area in Sichuan Province is chosen to perform test. It is shown that the basemap designed by this method is simple and practical and, compared with previous processing methods, it is more intelligent, and that the production results are fast and accurate and can meet the relevant precision requirements. This method provides a strong support for the accurate production of airborne geophysical thematic maps, and it is easy to use. At the same time, it also lays a foundation for the development of airborne geophysical exploration.

关 键 词：空间分析 航空物探 地理底图 GIS 

分 类 号：P631[天文地球—地质矿产勘探]