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TLM - the Swiss 3D Topographic Landscape Model
GIS Database Three-dimensional Mapping Stereoscopic Photogrammetry DEM/DTM
2015/12/18
The Swiss Federal Office of Topography (swisstopo) has established a new production infrastructure (TOPGIS) for maintaining the Topographic Landscape Model of Switzerland (TLM) as well as a LIDAR base...
一种基于TLM超混沌细胞神经网络图像加密新算法
超混沌 细胞神经网络 复合混沌映射 图像加密
2016/8/29
混沌对初值敏感的特性使得它适合于数据加密。以4 阶CNN 模型为基础,提出了一种新的超混沌细胞神经网络图像加密算法。算法分为置乱和扩散二个阶段,复合混沌映射用于生成置乱阶段控制参数,用以置乱图像行列之间的高度互相关像素。在扩散阶段,使用不同初始状态和参数的复合混沌映射生成高阶混沌细胞神经网络的初始条件,以生成扩散阶段的密钥流。算法的已知明文和选择明文攻击、密钥空间和直方图的仿真实验均取得了良好的结...
Time-Domain Simulation of Thin Material Boundaries and Thin Panels Using Digital Filters in TLM
Transmission line matrix shielding effectiveness digital filters thin material boundaries
2009/7/28
In this paper, the design and implementation of digital filters for the time-domain simulation of electromagnetic wave interaction with thin material boundaries and thin panels using the Transmission-...