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Conference Paper
Oblique-Incidence Dual-Polarized Bistatic FMCW Radar System for Through-Wall Human Detection
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- Authors
- Jae-Woo Park, Sung-Ik Jang, Jayol Lee, Kyung-Hwan Park, Hyeonseok Kim, Jeong-Wook Kim
- Issue Date
- 2025-10
- Citation
- International Radar Conference (RadarConf) 2025, pp.958-963
- Language
- English
- Type
- Conference Paper
- Abstract
- This paper presents a dual-polarized bistatic FMCW radar system for through-the-wall human detection under oblique incidence. Unlike conventional normal-incidence approaches, the proposed system utilizes oblique wave propagation to reduce reflection loss and improve wall penetration. To enhance detection robustness against wall-induced attenuation and polarization mismatch, a frequency-domain polarization synthesis algorithm is applied, enabling coherent combination of horizontal and vertical components. A hardware prototype was developed with optimized system parameters and validated through measurements in realistic wall scenarios. Experimental results demonstrate that oblique incidence yields higher signal-to-noise ratio (SNR) and clearer target responses compared to normal incidence, confirming the effectiveness and practical feasibility of the proposed architecture in complex propagation environments.
- KSP Keywords
- Coherent combination, Dual-polarized, FMCW Radar, Frequency domain(FD), Human Detection, Oblique incidence, Oblique wave, Polarization mismatch, Radar system, Reflection Loss, Signal noise ratio(SNR)