State of the art simulations are of great interest when designing a new instrument, studying the imaging mechanisms due
to a given scenario or for inversion algorithm design as they allow to analyze and understand the effects of different
instrument configurations and targets compositions.
In the framework of the studies about a new instruments devoted to the estimation of the ocean surface movements using
Synthetic Aperture Radar along-track interferometry (SAR-ATI) an End-to-End simulator has been developed. The
simulator, built in a high modular way to allow easy integration of different processing-features, deals with all the basic
operations involved in an end to end scenario. This includes the computation of the position and velocity of the platform
(airborne/spaceborne) and the geometric parameters defining the SAR scene, the surface definition, the backscattering
computation, the atmospheric attenuation, the instrument configuration, and the simulation of the transmission/reception
chains and the raw data. In addition, the simulator provides a inSAR processing suit and a sea surface movement
Up to four beams (each one composed by a monostatic and a bistatic channel) can be activated. Each channel provides
raw data and SLC images with the possibility of choosing between Strip-map and Scansar modes. Moreover, the
software offers the possibility of radiometric sensitivity analysis and error analysis due atmospheric disturbances,
instrument-noise, interferogram phase-noise, platform velocity and attitude variations.
In this paper, the architecture and the capabilities of this simulator will be presented. Meaningful simulation examples
will be shown.