Zoom FFT for precise spectrum calculation in FMCW radar using FPGA

Author

Al-Qudsi, B. ; Joram, Niko ; Strobel, Axel ; Ellinger, F.

Author_Institution

Dept. of Circuit Design & Network Theor., Tech. Univ. Dresden, Dresden, Germany

fYear

2013

fDate

24-27 June 2013

Firstpage

337

Lastpage

340

Abstract

The zoom FFT (ZFFT) has been utilized in various digital signal processing systems, it is used when a fine spectral resolution is needed within a small portion of a signal´s overall frequency range. It has been implemented in different fields and for different applications. This paper presents an implementation method of the ZFFT approach to estimate the spectral peak in the FMCW radar using a field programmable gate arrays (FPGA). It has been utilized to decrease the calculations complexity, hence, reduction the power consumption. The approach has been realized and a complexity reduction factor of up to 8 has been gained and tested on an FMCW radar processing system.

Keywords

CW radar; FM radar; fast Fourier transforms; field programmable gate arrays; radar resolution; FMCW radar processing system; FPGA; ZFFT approach; complexity reduction factor; digital signal processing system; field programmable gate array; fine spectral resolution; power consumption; precise spectrum calculation; spectral peak estimation; zoom FFT approach; Bandwidth; Complexity theory; Digital filters; Field programmable gate arrays; Generators; Radar; Signal resolution; Discrete Fourier transforms; chirp radar; field programmable gate arrays; radar position measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Ph.D. Research in Microelectronics and Electronics (PRIME), 2013 9th Conference on

Conference_Location

Villach

Print_ISBN

978-1-4673-4580-4

Type

conf

DOI

10.1109/PRIME.2013.6603180

Filename

6603180