Title :
The effect of ionospheric scintillation on phase gradient autofocus processing of synthetic aperture radar
Author :
Knepp, D.L. ; Groves, Keith M.
Author_Institution :
NorthWest Res. Assoc., Monterey, CA, USA
Abstract :
Depending on the transmission frequency and signal bandwidth, space based synthetic aperture radar (SAR) may be impacted by disturbances caused by small-scale structured ionization. This paper considers the effects of scintillation (variations in amplitude and phase) on a narrow band SAR that utilizes the phase-gradient autofocus (PGA) method that attempts to compensate for the effects of phase errors across the synthetic aperture.
Keywords :
ionospheric electromagnetic wave propagation; radiowave propagation; synthetic aperture radar; PGA method; SAR; ionospheric scintillation; narrow band SAR; phase errors; phase gradient autofocus processing; signal bandwidth; small-scale structured ionization; space based synthetic aperture radar; transmission frequency; Apertures; Decorrelation; Electronics packaging; Europe; Ionosphere; Radar antennas; Synthetic aperture radar; Synthetic aperture radar; autofocus; ionosphere; scintillation;
Conference_Titel :
Antennas and Propagation (EuCAP), 2013 7th European Conference on
Conference_Location :
Gothenburg
Print_ISBN :
978-1-4673-2187-7
Electronic_ISBN :
978-88-907018-1-8
