一种高精度数字高程模型生成的新方法  

A New Method for High-precision DEM Generating

作　　者：李瑞宗 杨诚 李柏延[2] 

机构地区：[1]海南地质综合勘察设计院,海口570206 [2]陕西师范大学旅游与环境学院,西安710062

出　　处：《导航定位学报》2014年第3期80-82,共3页Journal of Navigation and Positioning

摘　　要：基于卫星定位系统的实时动态差分法测量技术具有实时、高效、高精度等优势,已在测绘领域得到了广泛的使用,数字高程模型的引入对于测量来说是一次革新,可大幅度地提高测量的效率和准确性。以小海流域为例,研究了影响实时动态差分法数据精度的一些因素(格式、坐标转换带来的误差)之后,利用地理信息系统软件并结合实测的实时动态差分法数据,用一个全新的方法制作了高精度的数字高程模型,通过比较发现,验证数据精度得到了明显提高。Global positioning system （GPS） real-time kinematic （RTK） measurement technology has been widely used in the field of surveying and mapping, which is real-time, efficient, accurate and has many other advantages, digital elevation model （DEM） is introduced for the measurement of an innovation, which can greatly improve the efficiency and accuracy of the measurement. In this paper taking Xiaohai watershed as an example, after studying some factors affecting the accuracy of GPS-RTK data （error format, coordinate transformation error） and based on the measured RTK data using geographic information system （GIS） software, a new method of making high precision DEM has been improved obviously by comparison, verification of data accuracy.

关 键 词：全球定位系统 数字高程模型 实时动态差分法 地理信息系统 

分 类 号：P217[天文地球—测绘科学与技术]