On the base of heat transfer theory and glass tempering furnace industrial application,the two practical mathematic models of plane and roll are established,and the image simulation of calcution result is done.

SAR(Synthetic Aperture Radar) image simulation has been widely applied in designing and testifying SAR system,SAR image ortho-correction,Radar image interpretation and target recognition and so on.

This paper firstly introduces the importance of SAR image simulation,then not only decribes their principium and characteristics in detail,but also gives their flow chart separately.

A way of extracting observed stars for star image simulation;

Based on the theoretical framework of the leakage and spread of such poisonous and harmful substances as glycol and acraldehyde,this paper advances the graphic simulation of GIS of poisonous and harmful substances.

According to the main factors which affect the mapping precision,it is shown that difference between the digital photogrammetry mapping and analog photogrammetric plotting is comparatively analysed.