Measurement System for Time-domain Characterization

超宽带（UWB）是一种新兴的短距离设备技术，在无线通信、雷达、定位和安全应用方面具有潜在的优势。基于其低成本和高速数据传输能力，UWB在家庭和商业市场都具有潜力，并且非常适合各种高分辨率视频分发应用。超宽带雷达在医学成像、目标定位、运输车辆的液位测量和穿壁探测等方面都有应用。除了这些应用之外，超宽带技术还将在各种监控应用中得到应用。超宽带系统具有较宽的系统带宽和较低的辐射功率谱密度。它通过在发射器和接收器之间交换短电磁脉冲来工作。因此，了解超宽带终端的脉冲发射、传播和接收对优化系统设计具有重要意义。

Ultra wideband (UWB) is a new and emerging short range device technology with potential benefits for wireless communications, radars, localization and security applications. UWB has potential in both home and business markets, based on its low cost as well as high speed data transmission capability, and is well suited for various high resolution video distribution applications. UWB radars find applications in medical imaging, target localization, fluid level measurement on transport vehicles, and through-wall probing. Apart from these applications, UWB technology will find applications in various surveillance applications. UWB systems are characterized by a wide system bandwidth and a low radiated power spectral density. It operates by exchange of short electromagnetic pulses between transmitter and receiver. Therefore it is very important to understand the pulse transmission, propagation and reception by UWB terminals for optimal system design.