SAR autofocus based on minimum entropy
F Li, T Zeng, R Wang - 2013 IEEE International Conference on …, 2013 - ieeexplore.ieee.org
This paper proposes an autofocus method based on minimum-entropy criterion for synthetic
aperture radar imaging. Through minimizing the entropy, an iterative method is derived to …
aperture radar imaging. Through minimizing the entropy, an iterative method is derived to …
SAR image autofocus utilizing minimum-entropy criterion
T Zeng, R Wang, F Li - IEEE Geoscience and Remote Sensing …, 2013 - ieeexplore.ieee.org
An autofocus method was presented based on an entropy criterion for synthetic aperture
radar imaging. An iterative method, through minimizing the entropy, was derived to obtain …
radar imaging. An iterative method, through minimizing the entropy, was derived to obtain …
An experimental study of a new entropy-based SAR autofocus technique
RLJ Morrison, DCJ Munson - … . International Conference on …, 2002 - ieeexplore.ieee.org
The stage by stage approaching (SSA) entropy minimization approach to synthetic aperture
radar (SAR) autofocus is a modern and innovative technique, which, to date, has not been …
radar (SAR) autofocus is a modern and innovative technique, which, to date, has not been …
A circular SAR image autofocus algorithm based on minimum entropy
BJ Zhang, XL Zhang, SJ Wei - 2015 IEEE 5th Asia-Pacific …, 2015 - ieeexplore.ieee.org
Circular synthetic aperture radar (CSAR) is a high resolution 2D and 3D imaging mode, to
obtain the demand of all observation information. Circular motion trajectory make motion …
obtain the demand of all observation information. Circular motion trajectory make motion …
SAR Autofocus Using Wiener Deconvolution
This paper proposes a new approach to synthetic aperture radar (SAR) autofocus. The
proposed metric-based autofocus algorithm is based on the Wiener deconvolution filter …
proposed metric-based autofocus algorithm is based on the Wiener deconvolution filter …
A novel autofocus algorithm based on maximum total variation criteria for SAR images
L Ma, G Liao - Frontiers of Electrical and Electronic Engineering in …, 2007 - Springer
A novel autofocus algorithm for synthetic aperture radar (SAR) based on total variation is
presented in this paper. The method, which starts with a complex phasedegraded SAR …
presented in this paper. The method, which starts with a complex phasedegraded SAR …
Autofocus algorithm for SAR imagery based on sharpness optimisation
To focus synthetic aperture radar data suffering from phase errors, a novel autofocus
algorithm is presented. The algorithm uses the coordinate descent technique to estimate the …
algorithm is presented. The algorithm uses the coordinate descent technique to estimate the …
SAR autofocus based on the instantaneous frequency estimation
XM Li, R Tao, YL Li - 2009 2nd Asian-Pacific Conference on …, 2009 - ieeexplore.ieee.org
A new autofocus method for synthetic aperture radar (SAR) application is proposed based
on the instantaneous frequency estimation. The short-time Fourier transform (STFT) is …
on the instantaneous frequency estimation. The short-time Fourier transform (STFT) is …
Maximum likelihood SAR autofocus with low-return region
Autofocus algorithms deal with image restoration in a nonideal synthetic aperture radar
(SAR) imaging system. We propose a novel autofocus algorithm, denoted as MLA, that is …
(SAR) imaging system. We propose a novel autofocus algorithm, denoted as MLA, that is …
Feature preserving autofocus algorithm for phase error correction of SAR images
H Lee, CS Jung, KW Kim - Sensors, 2021 - mdpi.com
Autofocus is an essential technique for airborne synthetic aperture radar (SAR) imaging to
correct phase errors mainly due to unexpected motion error. There are several well-known …
correct phase errors mainly due to unexpected motion error. There are several well-known …