基于卫星云图的视场坐标转化模型

利用卫星云图的灰度矩阵，可以换算出经纬度等信息，并由此对不同时刻的卫星数据进行有效的风矢度量。本文运用地心坐标系统，构建了几何模型，结合lagrange插值法给出了灰度矩阵元素行列号对应于经纬度坐标的换算公式；借助Matlab软件得出了灰度矩阵中对应行、列的经纬二维数组；并用Matlab将灰度矩阵转化为卫星云图，并添加经纬信息，统一坐标系统后用Matlab绘制海岸线。

The Coordinate Transformation Model Based on the Satellite Cloud Image

The gray matrix of satellite cloud image , can be transformed the latitude and longitude , and then measured different time of satellite wind vector effectively .In this paper , using geocentric coordinate model, constructing the geometric model , and with Lagrange interpolation formula gives the conversion formula about gray matrix element ranks number corresponding to the latitude and longitude coordinates .And with the aid of Matlab , columns of warp and weft two -dimensional array convertes gray matrix into satellite cloud image, adds latitude and longitude information , in the end, unified coordinate system to stack the shoreline data.