Title :
A system model and inversion for synthetic aperture radar imaging
Author_Institution :
Dept. of Electr. & Comput. Eng., State Univ. of New York, Buffalo, Amherst, NY, USA
Abstract :
A system model and its corresponding inversion for synthetic aperture radar imaging are presented. The system model incorporates the spherical nature of a radar´s radiation pattern at far field. The inverse method based on this model integrates the recorded signals at various coordinates of a translational radar (linear array) via a spatial Fourier transform. The transformed data are shown to provide samples of the spatial Fourier transform of the target´s reflectivity function. The inverse method can be modified to incorporate deviations of the radar´s motion from its prescribed straight-line path. These principles are also applicable in inverse synthetic aperture imaging of a rotational target (circular array)
Keywords :
antenna radiation patterns; picture processing; radar applications; radar systems; radar theory; circular array; far field; inverse method; inverse synthetic aperture imaging; linear array; radar motion; radar target; radiation pattern; reflectivity function; rotational target; spatial Fourier transform; synthetic aperture radar imaging; system inversion; system model; transformed data; translational radar; Antenna radiation patterns; Aperture antennas; Fourier transforms; Frequency; Inverse problems; Radar antennas; Radar imaging; Radar polarimetry; Reflectivity; Synthetic aperture radar; Testing;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
DOI :
10.1109/ICASSP.1990.115861