坐标转换及参数加密软件设计与实现

Design and Implementation of Coordinate Transformation and Parameter Encryption

坐标转换是GPS定位显示中重要的环节,本文论述了在使用地方坐标系统的GIS数据情况下,通过高斯投影、四参数转换和参数加密,将GPS位置信息显示在地方坐标系下的电子地图上。通过实际选点测试,证明该方式是可行有效的。

The coordinate transformation plays an important role in the demonstration of GPS localization. In this paper, by using the GIS data of the local coordinate system, the GPS position information is displayed on the electronic： map of the local coordinate system by Gauss projection, four parameter transformation and parameter encryption. Through the actual test points, it proves that the method is feasible and effective.