Design of Dual Polarized FMCW Radar System with High Gain Lens Antenna for Through-the Wall Human Detection
DOI:
https://doi.org/10.15662/IJEETR.2026.0802219Keywords:
Dual polarized FMCW radar, polarization synthesis method, dual polarized lens antenna, radar system parameters design, through-the-wall multi-human detection.Abstract
Radar-based systems for detecting human presence through walls are widely used in applications such as rescue operations, surveillance, and security monitoring. Different radar technologies, including Pulse radar, Ultra-Wideband (UWB) radar, and Continuous Wave (CW) radar, have been explored for this purpose. UWB and Pulse radars offer high detection accuracy and good resolution, but they often require complex hardware and high sampling rates, increasing system cost.
CW radar methods improve motion detection, especially for small movements like breathing, but they generally provide poor range resolution, limiting their effectiveness in complex environments. Frequency-Modulated Continuous Wave (FMCW) radar provides a better balance by offering good range resolution with simpler system design and lower hardware requirements.
This makes it suitable for through-the-wall detection in practical scenarios. To further improve performance, high-gain antennas are used to enhance signal strength and penetration through obstacles. However, challenges such as signal loss through walls, system size, and maintaining strong signal quality still exist. This work focuses on improving detection performance by using an efficient FMCW radar setup combined with a high-gain antenna, demonstrating better results compared to conventional approaches
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