Many synthetic aperture radar (SAR) autofocus techniques use range bins containing a
single dominant point scatterer to estimate the phase error by maximizing or minimizing an …

While attitude steering in the yaw and pitch axes effectively minimizes a residual Doppler
centroid in spaceborne synthetic aperture radar systems, it can induce a ground-target pointing …

In a real airborne synthetic aperture radar (SAR), its major phase errors are usually composed
of two categories, such as slow-time varying phase errors (less than several cycles of …

PGA (Phase Gradient Autofocus) is a representative autofocus technique to improve the SAR
(Synthetic Aperture Radar) image quality. PGA can estimate high order phase errors and …

In this paper, we investigate the time-reversal SAR image of a point target buried in a cluttered
environment. To mitigate the complexity of the problem, we use a simple scattering model …

The extraction technique for Doppler information (Doppler centroid frequency (f $ _ {dc} $)
and it's rate (f $ _ {r} $) is very important to make an image from the radar echo signal data. …

SAR signal processing technique has been considered a crucial technical part in order to
generate an image from radar signal data and ADD (Agency for Defense Development) has …

In this paper, a camera modeling method that utilizes ephemeris data and imaging geometry
is presented. The proposed method constructs a mathematical model only with parameters …

Synthetic Aperture Radar is an active sensor utilizing the microwave in order to acquire the
radio imagery at day and night regardless of the weather condition. The Agency for Defense …

74-370 MBq (2-10 mCi) 131I, and 824 post-therapy scans were done 3-5 days after the
administration of 1.11-7.4 GBq (30-200 mCi) 131I. There was no evidence of liver metastasis in …