The Users Guide gives an introduction on the Gamma Interferometric SAR Processor (ISP). It tells the user the functionality of the software and in what order the programs are typically used to co-register SAR data, generate interferograms, estimate the interferometric correlation, conduct phase unwrapping, derive interferometric height maps, and resample the interferometric products to ortho-normal coordinates.
The Reference Manual describes the individual programs of the Gamma Interferometric SAR Processor (ISP). It tells the user what a certain program does and how it is used.