The study of SAR (Synthetic Aperture Radar) image formation using MATLAB it is explained in the following project. The main to use MATLAB in this project was the most important thing to choose it. As MATLAB it is one of the most tools used by engineers, I considered really interesting the project, and moreover with the image treatment that it involved. The study of this field requires some background information to identify the steps which must be done to obtain some results. SAR images treatment it is quite complex so, we must study all the background that the image formation involves, and learn in MATLAB the main functions which will have to be used. According to this project, the main fields which were considered to study once one realizes what it involves are: - an overview of satellite, - what Doppler frequency involves, - information about the radar we are going to obtain the images, - the main programs which can be used to acquire and treat SAR images, - some information about the file and its characteristics to understand the information it contains, - study about MATLAB, and its main functions to obtain images - study about the overall process in MATLAB which must be done - results obtained When all the steps will be followed, the conclusions will be also a part of the project due it summarizes the results and the knowledge acquired during all the realization of the report.