Position Estimation of Transceivers in Communication Networks.

Kent, C. ; Dowla, F.

Technical Information Center Oak Ridge Tennessee

关键词: Communication networks;    Algorithms;    Geometry;    Positioning;    Broadband;   

RP-ID  :  DE200415009725

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

With the rapid development in wireless sensor networks, there is an important need for transceiver position estimation independent of Global Positioning Systems (GPS). While GPS might be useful for outdoor sensor nodes, it is not for indoor node localization. In this case, position estimation is possible through network range estimates from time-of-flight (TOF) measurements, a technique well suited to large bandwidth physical links, such as in ultra-wideband (UWB) communications. For example, in our UWB systems, with pulse duration less than 200 pico-seconds, range can easily be resolved to less than a foot. Assuming an encoded UWB or spread spectrum physical layer, we developed algorithms and simulation tools to test transceiver position localization. Simulations were designed to lend insight into system characteristics such as position error sensitivities to network geometry, to range estimation errors, and to number of sensor nodes.