Through‐the‐wall imaging using Wi‐Fi signals

Autor: Lianlin Li, Kai He, Wei Zhong
Rok vydání: 2019
Předmět:
Synthetic aperture radar
Routing protocol
high-resolution three-dimensional through-the-wall imaging
Computer science
0211 other engineering and technologies
Energy Engineering and Power Technology
synthetic aperture mode
02 engineering and technology
indoor environment
01 natural sciences
Huygens–Fresnel principle
symbols.namesake
Radar imaging
0103 physical sciences
uhf antennas
Electronic engineering
bandwidth 20.0 mhz
010306 general physics
Protocol (object-oriented programming)
huygens principle
021101 geological & geomatics engineering
ieee 802.11n protocol wireless router
Bandwidth (signal processing)
General Engineering
radar computing
frequency 2.4 ghz
novel imaging strategy
Backpropagation
radar imaging
classical filtered back propagation algorithm
Wireless router
lcsh:TA1-2040
symbols
fbp algorithm
antennas
lcsh:Engineering (General). Civil engineering (General)
wireless lan
routing protocols
Software
indoor radio
backpropagation
synthetic aperture radar
commodity wi-fi signals
Zdroj: The Journal of Engineering (2019)
ISSN: 2051-3305
Popis: In this work, the authors experimentally investigate the high-resolution three-dimensional through-the-wall imaging exploiting commodity Wi-Fi signals in an indoor environment. The authors also provide physical insights into this novel imaging strategy, which has been derived from the Huygens' principle. In the authors’ experiments, a pair of antennas are used to acquire the Wi-Fi signals reflected from the scene in a synthetic aperture mode. The classical filtered back propagation (FBP) algorithm is then used to form the image based on these signals. The authors use an IEEE 802.11n protocol wireless router working at 2.4 GHz with bandwidth of 20 MHz. It can be faithfully expected that such imaging technique can open an exciting new door for various practical applications including safety screening and others.
Databáze: OpenAIRE
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