Physical Modeling and Performance Bounds for Device-free Localization Systems

被引：43
作者：
Rampa, Vittorio [1 ]
Savazzi, Stefano [1 ]
Nicoli, Monica [2 ]
D'Amico, Michele [2 ]
机构：
[1] Natl Res Council Italy CNR, Inst Elect Comp & Telecommun Engn IEIIT, I-00185 Rome, Italy
[2] Politecn Milan, DEIB, I-20133 Milan, Italy
来源：
IEEE SIGNAL PROCESSING LETTERS | 2015年 / 22卷 / 11期
关键词：
Cramer-Rao lower bound; device-free localization; human body shadowing; wireless sensor network; KNIFE-EDGE-DIFFRACTION; HUMAN-BODY; COMMUNICATION; GTD;
D O I：
10.1109/LSP.2015.2438176
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：
In this letter, an analytically tractable model based on diffraction theory is proposed to describe the perturbations of the electromagnetic propagation of radio signals caused by the presence of a moving object in the two-dimensional (2-D) area near the transmitting/receiving devices. This novel model is instrumental to the evaluation of non-cooperative device-free localization (DFL) systems as it allows to relate the received signal strength measurements of multiple radio links to the object size, orientation and position. The proposed model is validated experimentally using radio devices and it is used to derive closed-form fundamental limits to DFL accuracy, providing an analytical tool for DFL system design and network 2-D pre-deployment assessment.
引用
收藏
页码：1864 / 1868
页数：5
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