Journal ArticleDOI
A Portable Real-Time Digital Noise Radar System for Through-the-Wall Imaging
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TLDR
A portable, digital, real-time random noise radar system operating in the ultrahigh frequency range for through-the-wall detection and imaging and its capability to image target scenes and characterize human activity from different stand-off distances is demonstrated.Abstract:
We present the design and implementation of a portable, digital, real-time random noise radar system operating in the ultrahigh frequency range for through-the-wall detection and imaging. Noise radar technology is combined with modern digital signal processing approaches to architect a system to covertly perform range imaging of obscured stationary and moving targets as well as to detect the presence of humans via micro-Doppler detection combined with empirical mode decomposition. We model the propagation and sampling nonidealities in the system and propose techniques to overcome the effect of these nonidealities. Experimental results demonstrate the system's capability to image target scenes and characterize human activity from different stand-off distances.read more
Citations
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Journal ArticleDOI
Through-Wall Single and Multiple Target Imaging Using MIMO Radar
TL;DR: MIMO radar techniques for target detection and localization behind building walls are explored and a singular value decomposition of wavelet transform method is addressed to improve localization and detection of targets.
Proceedings ArticleDOI
Micro-doppler radar classification of human motions under various training scenarios
TL;DR: In this paper, the performance of S-band and mm-wave radar systems for classification of common stationary human movements has been investigated under various scenarios for two different micro-Doppler radar systems.
Journal ArticleDOI
A Dual-Band Through-the-Wall Imaging Radar Receiver Using a Reconfigurable High-Pass Filter
TL;DR: In this article, a dual-band through-the-wall imaging radar receiver for a frequency-modulated continuous-wave radar system was designed and fabricated using a high-order admittance synthesis method, and consists of transconductor circuits and capacitors.
Proceedings ArticleDOI
Extraction and analysis of micro-Doppler signatures by the Empirical Mode Decomposition
Amy Brewster,Alessio Balleri +1 more
TL;DR: In this paper, a set of experimental trials was conducted with a 10 GHz continuous wave radar to collect micro-Doppler signatures of a large single, double and triple bladed rotating fin and a sized miniature helicopter.
Journal ArticleDOI
Distributed Greedy Signal Recovery for Through-the-Wall Radar Imaging
TL;DR: A modified distributed orthogonal matching pursuit (MDOMP) algorithm with an efficient communication scheme for the sparse scene reconstruction in TWRI applications is proposed and compared with existing distributed sparse reconstruction methods.
References
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Journal ArticleDOI
Through-wall imaging (TWI) by radar: 2-D tomographic results and analyses
TL;DR: It has been shown that using multifrequency data high-quality image reconstruction can be achieved with a limited array view.
Journal ArticleDOI
Noise radar using random phase and frequency modulation
TL;DR: Computer algorithms for reference signal delay and compression are discussed as replacements for the classical delay line implementation and the ambiguity function and the statistical characteristics of the correlation output for the latter configuration are further analyzed.
Journal ArticleDOI
Three-Dimensional Wideband Beamforming for Imaging Through a Single Wall
TL;DR: This letter extends the analysis to 3D imaging via delay-and-sum beamforming in the presence of a single uniform wall to provide valuable information on target heights that can be used for enhancing target discrimination/identification.
Journal ArticleDOI
Noise-Modulated Distance Measuring Systems
TL;DR: The resulting system is similar to existing altimeters but is free of the ambiguities inherent in periodically modulated systems, avoids the "fixed error," and is capable of measuring distances down to a few feet, which makes it particularly suited for use as an altimeter in blind landing systems.
Journal ArticleDOI
Design, performance, and applications of a coherent ultra-wideband random noise radar
TL;DR: The unique design features of the ultra-wideband radar system are described, the theoretical foundations of noise polarimetry are developed, experimental evidence of the polarimetric and resolution capa-bilities of the system are provided, and results obtained in subsurfaceprobing applications are demonstrated.