Correcting and Calibrating Radar Imagery

Abstract

As with any imagery acquired by airborne and spacecraft sensors the data recorded by imaging radar can be distorted in both brightness and geometry as the result of a number of environmental and system factors. In this Chapter we explore the most significant sources of radiometric and geometric distortions and treat methods for removing, or at least minimising, them. We commence with errors in geometry. Closely related to distortions in brightness is the need to calibrate data, including the need to ensure that polarimetric responses are cross-calibrated. Calibration methods are also treated in this Chapter.