基于ArcGIS的坐标转换参数保密研究与应用  

Research on Coordinate Transformation Parameter Secrecy Based on ArcGIS and Its Application

作　　者：吴国梁[1] 张黎[1] 高翔[1] 刘邢巍[1] WU Guoliang

机构地区：[1]重庆市地理信息中心,重庆401121

出　　处：《地理空间信息》2018年第11期82-83,126,共3页Geospatial Information

摘　　要：针对ArcGIS坐标转换参数缺乏保密机制的问题,提出了一种利用伪参数实现坐标转换参数保密的方案。将通过建立虚拟中间坐标系计算得到的伪转换参数替换真实坐标转换参数,以达到对真实参数进行保密的目的。该方案已应用于重庆市独立坐标系与国家坐标系之间的相互转换,在不改变ArcGIS坐标转换工作机制和功能的前提下,实现了对真实坐标转换参数的保密,转换精度可靠。According to the security mechanism lack of ArcGIS coordinate transformation parameters,we proposed a security scheme of coordinate transformation parameter using pseudo parameter in this paper.By setting up the virtual intermediate coordinate system to calculate pseudo conversion parameters,we replaced the real coordinate conversion parameters,so as to achieve the purpose of keeping the real parameters confidential.This scheme was applied to the transformation between independent coordinate system in Chongqing and national coordinate system.Without changing the working mechanism and function of ArcGIS coordinate transformation,the real coordinate transformation parameter was kept secret,and the conversion accuracy was reliable.

关 键 词：ARCGIS 坐标转换 保密 伪参数 

分 类 号：P226.3[天文地球—大地测量学与测量工程]