Title :
2-D FFT and time-frequency analysis techniques for multi-target recognition of FMCW radar signal
Author :
Su, Li ; Wu, Hsien Shun ; Tzuang, Ching-Kuang C.
Author_Institution :
Grad. Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
A study of multi-object recognition method of a linear frequency-modulated continuous-wave (FMCW) radar system is presented. Principles of FMCW signal with its relation to the characteristics of the detected objects are reviewed. Two-dimensional fast Fourier transform (FFT) and time-frequency analysis (TFA) techniques are performed calculating information of detected objects from received radar signals. In time-frequency analysis, techniques including Gabor transform (GT), Wigner distribution function (WDF) and Gabor-Wigner transform (GWT) are demonstrated. Advantages and disadvantages of these methods are discussed.
Keywords :
CW radar; FM radar; Wigner distribution; fast Fourier transforms; object recognition; radar signal processing; 2D FFT; FMCW radar signal; GWT; Gabor transform; Gabor-Wigner transform; WDF; Wigner distribution function; fast Fourier transform; frequency-modulated continuous-wave radar system; multi-target recognition; multiobject recognition; radar signals; time-frequency analysis; Distribution functions; Radar applications; Radar signal processing; Time frequency analysis; Transforms; Radar signal processing; fast Fourier transforms;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2011 Asia-Pacific
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4577-2034-5
