Simulation of Landform's Echo Wave Based on DEM
You-Sai Zhang · Jisuanji fangzhen · 2007
The simulation of landform's echo wave is the key and knot in radar simulation system.The simulation of landform's echo wave based on DEM is studied.This paper introduces how to use fractal arithmetic to produce random digital elevation and how to smooth and paint digital elevation.Based on DEM,landform is divided into many simple geometry surfaces whose scattering characteristics are known.The paper also discusses how to account the power of each unit landform's echo wave by using radar equation and digital elevation,and then uses the principle of superposition to superpose each unit power,thus achieving the landform's echo wave of entire ground.Finally the back wave digitals are painted and shown by OpenGL technology.The results show that it is fit for project needs.