Signal Extension Method for Improved Range Resolution of Frequency-Modulated Continuous Wave Radar in Indoor Environments
Source abstract
Abstract
The range resolution of FMCW radar is critical for accurately distinguishing between multiple objects. Higher range resolution allows for better object separation and more precise location determination. While increasing the bandwidth can improve range resolution, it also raises costs and may be subject to regulatory constraints on the available frequency spectrum. This paper proposes an approach to enhance range resolution by increasing the effective bandwidth through signal processing, specifically by introducing the Estimated Signal Padding (ESP) method. ESP extends the bandwidth by lengthening the signal in the time domain, creating a synthesized signal for each target. The proposed algorithm can improve range resolution by a factor of at least 2.25. Unlike existing methods such as Zero Padding and Neural Network Padding, the proposed algorithm can distinguish targets of varying sizes rather than only targets of the same size. The performance of the algorithm has been validated through MATLAB simulations and FMCW radar experiments.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Radar Systems and Signal Processing · Advanced SAR Imaging Techniques · Indoor and Outdoor Localization Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Semiconductor Systems Engineering and Department of Convergence Engineering of Intelligent Drone, Sejong University, Seoul 05006, Republic of Korea
Department of Smart Drone Convergence and School of Electronics and Information Engineering, Aerospace University, Goyang-si 10540, Republic of Korea
Department of Electrical Engineering and Department of Convergence Engineering of Intelligent Drone, Sejong University, Seoul 05006, Republic of Korea
Funding
Korea government (MSIT) · Ministry of Education · IC Design Education Center (IDEC)
References (37)
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