Title :
On the simulation of MMW-radar cross-range imaging
Author :
Raymond, J. ; Bedard, J. ; Delisle, G.Y. ; De Villers, Y.
Author_Institution :
Dept. of Electr. Eng., Laval Univ., Que., Canada
Abstract :
Cross-range imaging can be performed using a frequency-modulated continuous-wave (FMCW) radar by illuminating a slowly rotating target. The process has been simulated mathematically by calculating the target response using the geometrical theory of diffraction and by processing the radar signal using the fast Fourier transform. The operation of a 94-GHz FMCW radar was simulated. The images obtained are projections of the targets on their plane of rotation. The resolution of these images for the dimension along the radar beam is only a function of the bandwidth, while the cross-range resolution depends upon the operating frequency and the total angle of rotation. The cross-range images of a circular cylinder about 0.5 m in length and 0.1 m in diameter are shown.<>
Keywords :
frequency modulation; picture processing; radar applications; 0.1 m; 0.5 m; 94 GHz; EHF; FMCW radar; MMW radar; angle of rotation; bandwidth; circular cylinder; cross-range images; cross-range imaging; cross-range resolution; diameter; fast Fourier transform; frequency-modulated continuous-wave; geometrical theory of diffraction; image resolution; length; operating frequency; radar beam; radar signal processing; slowly rotating target; target response; Fast Fourier transforms; Frequency; Image resolution; Physical theory of diffraction; Radar imaging; Radar signal processing; Radar theory; Signal processing; Signal resolution; Solid modeling;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1991. AP-S. Digest
Conference_Location :
London, Ontario, Canada
Print_ISBN :
0-7803-0144-7
DOI :
10.1109/APS.1991.174887
