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http://dx.doi.org/10.7467/KSAE.2014.22.7.031

Application and Analysis of 1D FRI (Finite Rate of Innovation) Super-resolution Technique in FMCW Radar  

Yoo, Kyungwoo (The Cho Chun Shik Graduate School for Green Transportation, KAIST)
Kong, Seung-Hyun (The Cho Chun Shik Graduate School for Green Transportation, KAIST)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.22, no.7, 2014 , pp. 31-39 More about this Journal
Abstract
Recently, as Intelligent Transportation System (ITS) and self-driving system become influential in the ground transportation system, automotive radar systems have been actively studied among the various radar systems to implement the vehicle collision detection system and distance measurement system between vehicles. Most of the automotive radars are Frequency Modulated Continuous Wave (FMCW) radar type which can calculate distance and velocity of target by estimating the frequency difference between the transmitted signal and received signal. Therefore, accurate frequency estimation is very important in the FMCW radar system. For this reason, to improve the measurement accuracy of the FMCW radar, Reverse Directional FRI (RD-FRI) Super-Resolution technique which has high frequency estimation accuracy is applied to the FMCW radar system. The feasibility of the proposed technique is evaluated with simulation results and compared with FFT and conventional Super-Resolution techniques. The simulation results show that the proposed technique estimates the frequency with high accuracy and the distance with centimeter accuracy.
Keywords
FMCW radar; Super-resolution; FRI;
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