Absolute phase determination for P-band repeat-pass UWB SAR interferometry

The P-band ultra-wideband synthetic aperture radar interferometry (InSAR) not only has the capability of foliage penetration, but also has the advantage in determining the absolute interferometric phase, which plays a key role in the InSAR data processing. In this paper, a novel absolute phase determination approach for P-band UWB InSAR is presented. A reference phase is generated from the registration result for aiding the phase unwrapping and absolute phase determination in the approach. The experimental results show that the approach has high efficiency.