超宽带技术的信道模型和定位技术研究与分析

短距离无线系统是今后较长时间内通信界研究的热点，其中个人局域网（PAN）概念的提出，更推动了个人信息网络的发展。实现PAN的主要技术有：IEEES02．11b、HomeRF、蓝牙（Bluetooth）以及超宽带（UWB）等。其中高带宽、高速率、低功耗和抗干扰等特点使得UWB技术优势极为突出。本文系统地阐述了UWB的物理信道模型、定位技术和计算方法，并进行了必要的总结和概括。

The Research and Analysis of Channel Models and Positioning Technology Based on UWB

The short distance wireless system will become a research hot spot in a longer time, Personal Area Network (PAN impulse the development of personal information network. Main technologies include IEEE802.11b, Home RF, Bluetooth as well as ultra-wide band (UWB and so on. Because UWB has its unique characteristics, wider band, higher speed rate, lower power spectrum density and stronger anti-jamming etc, the UWB-based technology is focused on more deeply for these advantages. The paper emphatically introduced the physical channel model, the positioning technology and basic methods of positioning computing on UWB. Finally the latest development of node positioning system and algorithms are presented and summarized in this paper.