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
Classification of human motions using empirical mode decomposition of human micro-Doppler signatures
TL;DR: In this article, the authors used the empirical mode decomposition to produce a unique feature vector from the human micro-Doppler signals following which a support vector machine was used to classify human motions.
Journal ArticleDOI
Bi-LSTM Network for Multimodal Continuous Human Activity Recognition and Fall Detection
TL;DR: A novel hybrid fusion scheme is proposed to combine soft and hard fusion to push the classification performances to approximately 96% accuracy in identifying continuous activities and fall events.
Journal ArticleDOI
Review of micro-Doppler signatures
TL;DR: In this paper, the authors present a review of micro-Doppler based on subject type, sensor capabilities, as well as environmental effects, and then propose future research areas for micro doppler.
Journal ArticleDOI
Continuous Human Motion Recognition With a Dynamic Range-Doppler Trajectory Method Based on FMCW Radar
Chuanwei Ding,Hong Hong,Yu Zou,Hui Chu,Xiaohua Zhu,Francesco Fioranelli,Julien Le Kernec,Changzhi Li +7 more
TL;DR: A novel dynamic range-Doppler trajectory (DRDT) method based on the frequency-modulated continuous-wave (FMCW) radar system is proposed to recognize continuous human motions with various conditions emulating real-living environment and achieves accurate and robust recognition even in various conditions of distance, view angle, direction, and individual diversity.
Journal ArticleDOI
Developments in target micro-Doppler signatures analysis: radar imaging, ultrasound and through-the-wall radar
TL;DR: The article shows that this research area is highly active and fast moving and demonstrates that micro-Doppler techniques can provide important solutions to many radar target classification challenges.
References
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Journal ArticleDOI
Inverse synthetic aperture radar imaging using a coherent ultrawideband random noise radar system
Daryl C. Bell,Ram M. Narayanan +1 more
TL;DR: This paper assesses the performance of this ultrawideband random noise radar as a range-Doppler imaging system, in particular, inverse synthetic aperture radar (ISAR), and presents polarimetric color images of a complex target that captures its polarIMetric scattering characteristics, which may be useful in automatic target recognition.
Journal ArticleDOI
Optimal Waveform Design for Improved Indoor Target Detection in Sensing Through-the-Wall Applications
TL;DR: The target impulse response is incorporated in an optimum design of the transmitted waveform which aims at maximizing the signal-to-interference and noise ratio (SINR) at the receiver output.
Journal ArticleDOI
Shifted Pixel Method for Through-Wall Radar Imaging
Pin-Heng Chen,Ram M. Narayanan +1 more
TL;DR: In this paper, a new approach for through-wall target localization is proposed, which decouples the target localization problem into three separate components: physical properties of the wall, analytic solution of target location, and numerical approach to pixel interpolation.
Proceedings ArticleDOI
Three-dimensional through wall imaging using an UWB SAR
Yazhou Wang,Aly E. Fathy +1 more
TL;DR: The UWB synthetic aperture radar is extended into a 3-D imaging radar, which goes beyond targets localization to their shape recognition and the performance of the 3- D imaging is validated experimentally using a human mock-up target.
Journal ArticleDOI
Frequency-modulation radar for use in the mercantile marine
TL;DR: In this paper, the principles of f.m. radar are outlined and a comparison is made between pulse and FPGA techniques, particularly with respect to the requirements of the merchant service.