Abo Bibliothek: Guest
Digitales Portal Digitale Bibliothek eBooks Zeitschriften Referenzen und Berichte Forschungssammlungen
Radio Physics and Radio Astronomy

ISSN Druckformat: 2152-274X
ISSN Online: 2152-2758

Archives: Volume 1, 2010 to Volume 3, 2012

Radio Physics and Radio Astronomy

DOI: 10.1615/RadioPhysicsRadioAstronomy.v3.i4.100
pages 365-375

LOCAL-QUADRATIC MAP-DRIFT AUTOFOCUS FOR SYNTHETIC APERTURE RADARS

O. O. Bezvesilniy
Institute of Radio Astronomy, National Academy of Sciences of Ukraine
I. M. Gorovyi
Institute of Radio Astronomy, National Academy of Sciences of Ukraine
Dmitry M. Vavriv
Institute of Radio Astronomy, National Academy of Sciences of Ukraine 4, Krasnoznamennaya St., Kharkiv 61002, Ukraine

ABSTRAKT

Uncompensated phase errors lead to quality degradation of images obtained by synthetic aperture radars (SAR). This effect becomes especially apparent in the systems with high spatial resolution. A novel approach to estimating residual phase errors in stripmap SAR signals is suggested. The idea of the method lies in estimating the local quadratic phase errors on short time intervals with the subsequent recovery of the unknown phase error on time intervals of arbitrary length. The map-drift autofocus (MDA) algorithm is used for the local estimation. The proposed method performance is demonstrated by the real radar data examples.


Articles with similar content:

Low-Rank Quadratic Detector of Random Signals in Unknown Correlated Clutter
Telecommunications and Radio Engineering, Vol.67, 2008, issue 18
Olga Lebedeva, Victor Golikov
Orientation Control of Artificial Satellite of Earth Using Set Estimates Prescribed by Linear Inequalities
Journal of Automation and Information Sciences, Vol.37, 2005, issue 10
Vladimir N. Shevchenko
Robust Methods of Ellipsoidal Estimation of Dynamical Systems State under Restrictions on Noise of Output Measurements and Rate of their Variation
Journal of Automation and Information Sciences, Vol.40, 2008, issue 10
Vladimir N. Shevchenko, Victor V. Volosov
CORRECTION OF RADIOMETRIC DISTORTIONS IN IMAGES IN THE CASE OF SAR PROCESSING USING THE RANGE-DOPPLER ALGORITHM
Telecommunications and Radio Engineering, Vol.73, 2014, issue 2
Dmitry M. Vavriv, Ye. M. Gorovyi, O. O. Bezvesilniy
An Algorithm of Realistic Coloring Projections of the Quadric Surfaces
Journal of Automation and Information Sciences, Vol.34, 2002, issue 2
Igor V Gaidaichuk, Alexander V Bestsenny