摘要
以已知的离散数据点坐标和高程异常为研究对象,讨论了基于双线性内插模型的高程异常值获取的方法,通过内插模型建立高精度、高分辨率的区域高程异常数字模型,从而内插出该区域内任何一点或一小片区域的高程异常值,有助于解决各种与大地水准面相关的测绘工程问题,对推动"数字区域"、"数字城市"、"数字中国"的信息化建设具有重要作用.
This research focuses on the coordinate and elevation exception of the known discrete data points and discusses the method of obtaining the elevation exception based on the model of the bilinear interpolation. It establishes a digital model of high - preeisional and high - resolutional regional elevation exception to interpolate the elevation exception of any point or any small region in the region. This research can help to resolve some surveying problems associated with the geoid and promote the informational construction of the ＂Digital Region＂, ＂Digital City＂ and ＂Digital China＂.
出处
《云南民族大学学报（自然科学版）》
CAS
2013年第1期75-78,共4页
Journal of Yunnan Minzu University:Natural Sciences Edition
关键词
高程异常
双线性内插
数字模型
离散点
elevation exception
bilinear interpolation
digital model
discrete point
