Abstract
Micro-Doppler signature can convey information of detected targets and has been used for target recognition in many Radar systems. Nevertheless, micro-Doppler for the specific Forward Scattering Radar (FSR) system has yet to be analyzed and investigated in detail; consequently, information carried by the micro-Doppler in FSR is not fully understood. This paper demonstrates the feasibility and effectiveness of FSR in detecting and extracting micro-Doppler signature generated from a target’s micro-motions. Comprehensive theoretical analyses and simulation results followed by experimental investigations into the feasibility of using the FSR for detecting micro-Doppler signatures are presented in this paper. The obtained results verified that the FSR system is capable of detecting micro-Doppler signature of a swinging pendulum placed on a moving trolley and discriminating different swinging speeds. Furthermore, human movement and micro-Doppler from hand motions can be detected and monitored by using the FSR system which resembles a potential application for human gait monitoring and classification.
Highlights
Forward Scatter Radar (FSR) is a subclass of Bistatic Radar and it is being actively studied as it has many advantages such as, enhanced Radar Cross Section (RCS) at FS region and possibility of using Continuous Wave (CW) as transmitted signal which enable low radiation power requirement.a Forward Scattering Radar (FSR) receiver circuit is reasonably simple in design, where it can detect stealth targets such as the FS RCS is practically independent from its shape and absorbs material coating [1]
When different parts of moving targets exhibit a micro-motion with respect to its global reflection center, such as vibrations or rotating movements, it produces additional frequency modulation of the reflected wave, and the generated frequency sidebands are known as micro-Doppler effects [10]
System system in in detecting detecting and and identifying identifying micro-Doppler micro-Dopplersignatures signatures generated generatedfrom from the the micro-motions micro-motions of of different moving targets; and (ii) to understand the characteristics of micro-Doppler in the different moving targets; and (ii) to understand the characteristics of micro-Doppler in the FSR system
Summary
Forward Scatter Radar (FSR) is a subclass of Bistatic Radar and it is being actively studied as it has many advantages such as, enhanced Radar Cross Section (RCS) at FS region and possibility of using Continuous Wave (CW) as transmitted signal which enable low radiation power requirement.a FSR receiver circuit is reasonably simple in design, where it can detect stealth targets such as the FS RCS is practically independent from its shape and absorbs material coating [1]. Forward Scatter Radar (FSR) is a subclass of Bistatic Radar and it is being actively studied as it has many advantages such as, enhanced Radar Cross Section (RCS) at FS region and possibility of using Continuous Wave (CW) as transmitted signal which enable low radiation power requirement. The FSR’s effectiveness and capability for micro-Doppler detections are still unclear, the study remains a broad area of research and poses fresh challenges. When different parts of moving targets exhibit a micro-motion with respect to its global reflection center, such as vibrations or rotating movements, it produces additional frequency modulation of the reflected wave, and the generated frequency sidebands are known as micro-Doppler effects [10]
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