B. Friedlander et B. Porat, VSAR - A HIGH-RESOLUTION RADAR SYSTEM FOR OCEAN IMAGING, IEEE transactions on aerospace and electronic systems, 34(3), 1998, pp. 755-776
The velocity synthetic aperture radar (VSAR) is a conceptual synthetic
aperture radar (SAR)-based sensor system for high resolution ocean im
aging, The VSAR utilizes data collected by a multielement SAR system,
to extract information not only about the radar reflectivity of the ob
served area, but also about the radial velocity of the scatterers in e
ach pixel. This Is accomplished by making use of the phase information
contained in multiple SAR images, and not just the magnitude informat
ion as in conventional SAR. Using this velocity information, the VSAR
attempts to compensate for the velocity distortion inherent in convent
ional SAR and to reconstruct the ocean reflectivity We present the bas
ic theory of the VSAR system and its performance. We also provide an a
nalysis of the VSAR imaging mechanism for a statistical model of the r
adar returns, designed to capture the effects of speckle and of resolu
tion degradation due to the decorrelation of the radar returns.