Title :
ISAR imaging of rolling, pitching and yawing targets
Author :
Berizzi, F. ; Dian, M.
Author_Institution :
Dept. of Inf. Eng., Pisa Univ., Italy
Abstract :
This paper deals with the problem of ISAR imaging of targets in rectilinear motion in the presence of pitch, roll and yaw. We define a model of the received signal in the presence of the angular motions and we calculate the impulse response of the imaging system. From this preliminary analysis we find that the ISAR system behaves as a spatially variant linear filter. This effect produces a blurring of the reconstructed image. We also determine the conditions under which the effects of pitch, roll and yaw motions are negligible and finally we validate the theoretical analysis by presenting and discussing some simulation results
Keywords :
electromagnetic wave scattering; image reconstruction; image resolution; inverse problems; motion estimation; radar cross-sections; synthetic aperture radar; transient response; ISAR imaging; ISAR system; angular motions; high resolution images; ideal scatterers; imaging system; impulse response; pitching targets; received signal model; reconstructed image blurring; rectilinear motion; rolling targets; simulation results; spatially variant linear filter; yawing targets; Analytical models; Bandwidth; Image motion analysis; Image reconstruction; Image resolution; Motion analysis; Nonlinear filters; Radar imaging; Signal resolution; Trajectory;
Conference_Titel :
Radar, 1996. Proceedings., CIE International Conference of
Conference_Location :
Beijing
Print_ISBN :
0-7803-2914-7
DOI :
10.1109/ICR.1996.574458
