PS_DISP (1.5 beta version)
PS_DISP is a trial bundled script written on bash shell and Matlab code. The script requires Generic Mapping Tools (GMT) and Matlab Software and runs under Linux operating system. The purpose of PS DISP is to generate 2D or 3D vectors displacement from InSAR both ascending and descending orbit either from the mean velocity or time-series data. The 1.5 beta version includes the computation of the 3D field using an optimized approach with variance component estimation (VCE).
PS_DISP is a trial bundled script to generate 2D/3D vectors displacement from the LOS InSAR result both ascending and descending data. The output for 2D mode is the vertical (dU) and east-westward (dE) vectors. The 2D mode is appropriate to study cases such as subsidence, crustal deformation, and any other deformation phenomena in which the direction of movement can not be predicted easily. The output for 3D mode is the vertical (dU), east-westward (dE), and north-southward (dN) vectors. The 3D pseudo mode is computed based on the ground motion in direction of the slope. It assumes the movement will be going towards a lower level. It's a pseudo calculation for the third component of 3D vectors using the slope aspect information or/and the surface parallel flow (SPF). The 3D pseudo mode could be used to study cases such as landslide (slowly slope movement), glacier monitoring, volcanoes observation, etc.