Yx. Wang et al., ISAR MOTION COMPENSATION VIA ADAPTIVE JOINT TIME-FREQUENCY TECHNIQUE, IEEE transactions on aerospace and electronic systems, 34(2), 1998, pp. 670-677
A novel approach for inverse synthetic aperture radar (ISAR) imaging i
s presented for both target translational motion and rotational motion
nonuniformity compensation. The basic idea is to perform Doppler trac
king to Individual scatterers via an adaptive joint time-frequency (AJ
TF) projection technique. After maximizing the projection of the phase
function to a set of basis functions In time-frequency plane, the Dop
pler frequency drift of the strongest scatterer in the range bin is au
tomatically tracked out and the multiple prominent point processing (P
PP) scheme is implemented to eliminate both the translational motion e
rror and rotational motion nonuniformity. Further the azimuth spacing
can be estimated, which permits polar reformatting of the original col
lected data.