An InSAR Ionospheric Correction Method Based on Variance Component Estimation With Integration of MAI and RSS Measurements
Ionospheric phase delay can seriously affect the low-frequency spaceborne synthetic aperture radar (SAR) systems.Ionospheric correction is, therefore, vital to improving the measurement accuracy of Interferometric SAR (InSAR).InSAR ionospheric correction relies mainly on two kinds of approaches, i.e., one uses SAR azimuth offsets measures, and the