摘要
脉冲无线电(IR-UWB)技术利用极窄脉冲传输良好的时间分辨率特性,可以为收发机之间提供精确的距离测量,从而为室内与室外的定位系统提供一种低成本、高精确度的定位技术。本文对一种UWB标签定位系统作了简单的介绍,提出了一种UWB能量检测接收机的方案,并对能量检测接收机中的积分窗作了一种新颖合理的设计,简化了接收机的同步捕获模块。最后还对接收机FPGA基带处理部分作了仿真,给出了仿真波形。仿真结果证实了设计的可行性,说明UWB定位厘米级的精度是可实现的。
The IR_UWB technology for the nicer characteristics of time differentiation rate by using very narrow impulse transmission, can provide accurate distance measuring between the transmitter and the receiver, and thus provide a low-cost but high-precision location technique for indoor and outdoor locating systems. This paper gives a brief introduction of the UWB tag location system, proposes a project for the UWB energy detecting receiver, and gives a novel and rational design of the integral window in it, which simplifies the simultaneous capturing module of the receiver. Finally, a simulation of the FPGA baseband part of the receiver is taken, and the simulation waveforrns are given. The simulation results confirm the feasibility of the design, which shows that the centimeter-level positioning accuracy of UWB is achievable.
出处
《计算机工程与科学》
CSCD
北大核心
2009年第7期123-125,155,共4页
Computer Engineering & Science
基金
国家自然科学基金资助项目(60472091)
关键词
UWB
标签定位
能量检测
积分窗
同步捕获
UWB
tag location
energy detecting
integral window
simultaneous capturing
