Correcting and Measuring Ionospheric Scintillation Amplitude Stripes in L-Band SAR Images

Drifting Ionospheric Scintillation Simulation for L-Band Geosynchronous SAR

“…In this case, the in-aperture scintillation phase and amplitude errors of P tend to be uniform (see Fig. 5(a)), which indicates the appearance of the so-called amplitude stripes that have been frequently detected in the PALSAR and PALSAR-2 images [24]- [28]. Differing from the LEO case, the effective IPP of GEO SAR tracks off course due to the interaction of the significant v i (see Fig.…”

“…7(b) suffers from significant amplitude stripes and will be a comparison with the following simulated L-band GEO SAR images. The anisotropic elongation angle is estimated to be about -4 deg by using the approach in [28], which is a typical setting in the following simulation.…”

“…There have been two types of ionospheric scintillation artifacts observed in present L-band low-Earth-orbit (LEO) SAR images. The first type refers to the artifact of amplitude stripes originated from amplitude scintillation, which has been frequently observed in the equatorial nighttime PALSAR and PALSAR-2 acquisitions [24]- [28]. It was reported that 14% of the surveyed PALSAR acquisitions and 74% of the surveyed days suffered visible amplitude stripes across the South American continent during October 2010 [24].…”