摘要
GPS高程拟合的关键是利用少量GPS/水准重合点,实现GPS大地高与正常高的转换,函数拟合法在实际工程中应用广泛。本文对GPS高程拟合常用方法多面函数法和二次曲面法的原理进行介绍,结合实例用两种方法进行转换,对结果进行比较,证实多面函数法可以提高拟合精度,适用于高程异常较为复杂的地区。
The key to GPS elevation fitting is to use a small number of GPS/level coincidence points to realize the conversion of GPS geodesic height and normal height. The function fitting method is widely used in practical engineering. In this paper, the principle of the general method of GPS elevation fitting hardy function method and quadric surface method is introduced, and the two methods are used to convert the results. It is confirmed that the hardy function method can improve the fitting accuracy and is suitable for the regions with high elevation anomaly.
作者
韩子清
郭杨亮
马瑞娟
张顺幸
HAN Ziqing;GUO Yangliang;MA Ruijuan;ZHANG Shunxing(Xi’an University of Science and Technology, College of Geomatics, Xi’an 710054, China;Geophysical Surveying Team of Coal Field Geological Prospecting Bureau in Henan Province, Zhengzhou 450009, China;The Fifth Geo-exploration Institute, Henan Bureau of Geo-exploration and Mineral Development, Zhengzhou 450001, China)
出处
《四川有色金属》
2019年第1期5-7,14,共4页
Sichuan Nonferrous Metals
关键词
高程异常
多面函数
二次曲面
elevation abnormality
hardy function
quadric surface
