A Low-Cost Ultra-Wideband Indoor Ranging System

被引：29

作者：

De Angelis, Alessio ^{[1
]}

Dionigi, Marco ^{[1
]}

Moschitta, Antonio ^{[1
]}

Carbone, Paolo ^{[1
]}

机构：

[1] Univ Perugia, Elect & Informat Engn Dept, I-06125 Perugia, Italy

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2009年 / 58卷 / 12期

关键词：

Geolocation; indoor ranging; time of flight; ultra-wideband (UWB); UWB TECHNOLOGY;

D O I：

10.1109/TIM.2009.2020834

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents the development of a low-cost indoor ranging technique based on time-of-arrival (TOA) estimation, using short-pulse ultra-wideband (UWB) signals. The realized system includes two identical UWB transceiver devices, in which the receiver section is based on a tunnel diode detector and the pulse generation is performed by a common bipolar transistor driven in avalanche mode. An indirect measurement of the distance between the devices is obtained by measuring the frequency of the generated pulse train. A theoretical model of the system is described, and a statistical analysis is presented, including the closed-form evaluation of the Cramer-Rao lower bound (CRLB) on the distance estimation and showing the asymptotic statistical efficiency of the proposed estimators. Furthermore, the principle of operation of the realized system prototypes is described, along with some implementation issues. Finally, experimental results are shown and discussed.

引用

页码：3935 / 3942

页数：8

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