This paper is composed of two parts including 5 chapters . in the first part ( including chapter 2 ^ 3 ) , this paper explains an improved geometry - model method to eliminating eclipse shadow , using satellite imaging theory and projection theory to convert plane rectangular coordinates into rectangular spherical coordinates . otherwise , through studying eclipse ' s shape and size , this paper uses a math - function - model to eliminating eclipse shadow 本文共有五章,主要內容分為兩部分;第一部分包括第二、三章的內容,利用可見光云圖成像原理以及點的投影法,將平面云圖投影到三維直角坐標的球面上,對用于云圖陰影訂正的原幾何模型法加以改進,得到改進的幾何模型法,并進行日食陰影訂正實驗;本文還利用數學函數模型法,通過研究月球在地球表面投射陰影的形狀及其受影響程度,從另一方面進行可見光云圖日食陰影的訂正實驗研究。