基于Matlab和地球高程数据的三维可视化弹道仿真

Three-dimensional Trajectory Simulation Based on Matlab and DEM Data

针对常规的纹理映射方法制作三维地球时存在的颜色数据量大、对硬件图形显示要求较高及立体感不强的弊端,运用Matlab提供的专业的地球高程数据颜色映射表,提出了一种基于地球高程数据的三维地球模型制作方法,并通过坐标变化将弹道位置参数转化为地心大地直角坐标,从而在三维彩色地球的基础上,绘制出了三维弹道曲线,仿真试验表明,所制作的三维弹道模型立体感及真实感较强,为弹道仿真提供了一种有效手段。

As the traditional texture mapping method of drawing Earth has the shortcoming of great amount of color data,high requirement of hardware graphical display and the weak stereo perception,this paper proposed a method of modeling three-di mensional Earth based on DEM data and the colormap provided by Matlab.It also draws the three-dimensional trajectory by transforming coordinates based on the Earth model above.The simulation results show that the model proposed by this paper has good three-dimensional effect and this paper provides an effective method of trajectory simulation.