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http://dx.doi.org/10.6109/jkiice.2016.20.4.707

Efficient Implementation of FMCW Radar Signal Processing Parts Using Low Cost DSP  

Oh, Woojin (Department of Electronic Engineering, Kumoh National Institute of Technology)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.20, no.4, 2016 , pp. 707-714 More about this Journal
Abstract
Active driving safety systems for vehicle, such as the front collision avoidance, lane departure warning, and lane change assistance, have been popular to be adopted to the compact car. For improving performance and competitive cost, FMCW radar has been researched to adopt a phased array or a multi-beam antenna, and to integrate the front and the side radar. In this paper we propose several efficient methods to implement the signal processing module of FMCW radar system using low cost DSP. The pulse width modulation (PWM) based analog conversion, the approximation of time-eating functions, and the adoption of vector-based computation, etc, are proposed and implemented. The implemented signal processing board shows the real-time performance of 1.4ms pulse repetition interval (PRI) with 1024pt-FFT. In real road we verify the radar performance under real-time constraints of 10Hz update time.
Keywords
FMCW radar; Active safety system; Low cost DSP; PWM filter;
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