B1: Characterization of Propagation Channels

B1项目的总体目标是为太赫兹通信信道模型的开发提供良好的可持续性基础，并为项目领域C中的系统计量过程提供投入。项目B1中进行测量的基础是使用项目A2提供的相应程序的信道探测设备和THz时域光谱的成熟设备。我们将考虑传播信道特性的五个方面。基于该项目第一阶段的材料测量，结果表明，具有复杂内部介观结构的建筑材料无法用传统的散射理论建模。因此，在第二阶段，我们将研究并提出适当的新方法来模拟这些材料。在第二项活动中，我们建议用高度散焦的光束来表征传输信道，以获得关于人类和日常物体作为频率函数的信道的散射和几何阻塞的相对贡献的信息。这将为项目C1中的波束跟踪和波束搜索活动以及项目B1中关于考虑移动散射和/或阻挡物体的物理层安全传播方面的第三项活动提供重要投入。另外两项活动将侧重于丰富的散射工业环境中的多径传播特性，以及多链路连接，如多跳链路和分布式天线系统，以支持高等级系统评估。

The overall goal of the B1 project is to provide a sound metrological basis for the development of channel models for THz communications and provide input for the process in project area C on system metrology. The basis for the measurements carried out in project B1 are channel sounding equipment using the corresponding procedures provided by project A2 and the mature equipment of THz Time Domain Spectroscopy. We will consider five aspects of the characterisation of the propagation channel. Based on the material measurements from phase I of the project, it turned out that building materials with complex internal mesoscopic structures cannot be modelled with traditional scattering theories. Therefore, in phase II we will study and propose appropriate new ways to model such materials. In the second activity, we propose to characterize the transmission channels with highly defocused beams in order to obtain information about the relative contribution of scattering and geometrical blockage of the channels by humans and everyday objects as function of frequency. This will provide important input to the beam tracking and beam searching activities in project C1 as well as to the third activity in Project B1 on propagation aspects of physical layer security taking into account moving scattering and/or blocking objects. The two other activities will focus on the characterisation of multipath propagation in rich scattering industrial environments and on multi-link connections such as multi-hop links and distributed antenna systems to support metrological grade system evaluation.