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Proceedings ArticleDOI

UWB micro-doppler radar for human gait analysis using joint range-time-frequency representation

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TLDR
A novel, standalone ultra wideband (UWB) micro- doppler radar sensor that goes beyond simple range or micro-Doppler detection to combined range-time-Doppelganger frequency analysis and can monitor more than one human object in both line-of-sight (LOS) and through wall scenarios.
Abstract
In this paper, we present a novel, standalone ultra wideband (UWB) micro-Doppler radar sensor that goes beyond simple range or micro-Doppler detection to combined range-time-Doppler frequency analysis. Moreover, it can monitor more than one human object in both line-of-sight (LOS) and through wall scenarios, thus have full human objects tracking capabilities. The unique radar design is based on narrow pulse transceiver, high speed data acquisition module, and wideband antenna array. For advanced radar post-data processing, joint range-time-frequency representation has been performed. Characteristics of human walking activity have been analyzed using the radar sensor by precisely tracking the radar object and acquiring range-time-Doppler information simultaneously. The UWB micro-Doppler radar prototype is capable of detecting Doppler frequency range from -180 Hz to +180 Hz, which allows a maximum target velocity of 9 m/s. The developed radar sensor can also be extended for many other applications, such as respiration and heartbeat detection of trapped survivors under building debris.

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Citations
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Journal ArticleDOI

A Survey of Deep Learning-Based Human Activity Recognition in Radar

Xinyu Li, +2 more
- 06 May 2019 - 
TL;DR: This paper elaborate deep learning approaches designed for activity recognition in radar according to the dimension of radar returns, including 1D, 2D and 3D echoes and addresses some current research considerations and future opportunities.
Journal ArticleDOI

Phase-Based Methods for Heart Rate Detection Using UWB Impulse Doppler Radar

TL;DR: To further enhance the accuracy of the HR estimation, a recently developed state-space method has been successfully combined with CSD and AD techniques and over 10 dB improvements in SNR is demonstrated.
Journal ArticleDOI

Radar-Based Human Activity Recognition Using Hybrid Neural Network Model With Multidomain Fusion

TL;DR: A novel hybrid neural network model is developed for exploring multidomain fusion of radar information, and three kinds of 2-D domain spectra are used in a fashion of supplementing each other with a hybrid framework that combines three models: 1-D convolution neural network, recurrent Neural network, and 2- D convolution network.
Proceedings ArticleDOI

Attention-Augmented Convolutional Autoencoder for Radar-Based Human Activity Recognition

TL;DR: An attention-augmented convolutional autoencoder for human activity recognition using radar micro-Doppler signatures demonstrates that the incorporation of the attention mechanism yields superior classification accuracy with respect to training sample size, compared to the conventional CAE.
Proceedings ArticleDOI

Application of naïve Bayes classifier in fall detection systems based on infrared depth sensors

TL;DR: A novel solution of the fall detection problem, based on the use of infrared depth sensors, is proposed and a methodology for acquisition of real-world data and their preprocessing is presented.
References
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Book

Time-Frequency Transforms for Radar Imaging and Signal Analysis

Victor C. Chen, +1 more
TL;DR: This work presents a meta-analysis of radar electronic backscattering radar signals radar ambiguity function and matched filter synthetic aperture radar imaging, which highlights the importance of time-frequency transforms for radar applications.
Journal ArticleDOI

Human walking estimation with radar

TL;DR: A human walking model is presented which can be used both to calculate the radar response and to visually animate a walking person and the results show that estimation of the walking parameters is possible.
Proceedings ArticleDOI

Application of a continuous wave radar for human gait recognition

TL;DR: In this paper, Fourier transform techniques were used to analyze these signatures and key features were identified that are very representative of the human walking motion, which could have a wide range of security and perimeter protection applications involving the use of low-cost CW radars as remote sensors.
Journal ArticleDOI

CW and Pulse–Doppler Radar Processing Based on FPGA for Human Sensing Applications

TL;DR: This paper discusses using field-programmable gate arrays (FPGAs) to process either time- or frequency-domain signals in human sensing radar applications and gives an example for a continuous-wave (CW) Doppler radar and another for an ultrawideband (UWB) pulse–Doppler (PD) radar.
Journal ArticleDOI

Doppler and direction-of-arrival (DDOA) radar for multiple-mover sensing

TL;DR: A low-cost two-element receiving array concept is investigated for detecting multiple moving targets in indoor surveillance applications using the use of only two elements in the receiver array.
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