Space-variant phase error is the source of defocusing in spotlight SAR image for large
scenes. The well-known autofocus techniques cannot easily overcome this type of error …

Spotlight SAR accumulates large Doppler bandwidth to improve azimuth resolution. On
condition of certain pulse reputation frequency (PRF), Doppler bandwidth accumulates at …

In this paper the phase errors from motion errors in spotlight synthetic aperture radar (SAR)
are studied, and then are decomposed into two kinds, space-invariant error caused by …

Frequency scaling approach is a new spotlight SAR image formation algorithm. It precisely
performs the range cell migration correction for dechirped raw data without interpolation by …

In recent papers the authors discussed the advantages of forming spotlight-mode SAR
imagery from phase history data via a technique that is rooted in the principles of phased …

Advanced synthetic aperture radar (SAR) systems achieve high spatial resolution by using
wide range bandwidth combined with long azimuth illumination time. In order to deal with …

This paper first studies the phase errors for fine-resolution spotlight mode SAR imaging and
decomposes the phase errors into two kinds, one is caused by translation and the other by …

Equipped with an airborne spotlight SAR, inertia navigation system can not measure the
motion errors with the required accuracy for high resolution SAR imaging, which may …

A highly accurate phase error estimation algorithm can enable or enhance the performance
of many existing and emerging applications of synthetic aperture radar (SAR). In some …

In the Fast Factorized Back Projection Algorithm [1], the 2D interpolation in the image
domain is an essential procedure to obtain a fine resolution image which is achieved point …