Génération Rapide de Signaux Radar D'environnements Complexes Pour la Simulation de Systèmes Imageurs SAR

Résumé du livre

This thesis presents efficient SAR raw data simulation. Initially, the case of a linear sensor trajectory is considered and it is shown that raw data simulation can be considered as inverse raw data processing. Different examples are presented with a point scatterer using inverse Omega-k and inverse Chirp Scaling algorithm. Raw data simulation corresponding to a moving object is also shown to be a modified form of these two dimensional frequency domain simulation algorithms. The case of sensor trajectory errors is considered next and it is demonstrated that by making certain approximations, this process can be carried out by partial summations coupled with frequency domain simulation. Finally, the presented techniques are applied to generate raw data for a complex scene, consisting of a single or multiple buildings. The anisotropic nature of the building response is also taken into account, besides introducing interferometric image and raw data simulation.