基于小波构建的山地地形建模与仿真  

Modeling and Simulation of Mountainous Terrain Based on Wavelet Construction

作　　者：卜彦龙[1] 崔雁[1] 刘俊泽[1] 

机构地区：[1]北京航天飞行控制中心,北京100094

出　　处：《测试技术学报》2010年第3期234-239,共6页Journal of Test and Measurement Technology

基　　金：国防科技大学博士生创新基金资助项目(B070301);湖南省自然科学基金资助项目(07JJ3127)

摘　　要：将小波构建的思想应用于山地地形建模过程中.在分析山地地形特征的基础上,受小波构建过程的启发,将山地整体起伏区域对应于小波低频部分,局部随机起伏对应于小波高频部分,以此建立递推模型对山地地形进行仿真模拟.小波参数统计建模过程中,以高斯假设为基础,为处于不同层次的小波系数赋予与自然地形变化规律相符合的分布参数,使得山地地形特征与小波构建理论相统一.以此方法建立的模型,具有计算量小,易于分解等显著优点,仿真试验验证了此方法的有效性.By analyzing the features of real terrain and the characteristic of wavelet construction, the global terrain undulation was considered as low frequency of wavelet, and the local random wave was corresponded to its high frequency. Then an iterative model of terrain was founded, and the wavelet coefficients in different levels were created by different distribution parameters based on Gaussian statistics assumption. Therefore the features of natural terrain and the characteristic of wavelet construction were unified. The established terrain model is easy to realize and convenient to decompose. The simulation results show the feasibility of the model.

关 键 词：小波构建 小波系数分布模型 山地地形模型 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]