In this dissertation, a study and a practical implementation of an acquisition and preprocessing unit are provided for the digitization and suitability of the radar signals. The hardware solution allows the digitization of radar signals at an appropriate speed and subsequently transfers the preprocessed data into a suitable interface. The system must include a memory and a direct connection interface for storage and external communication with a computer, respectively. The final results are obtained by processing the sampled data. This task is performed by a computer with a specific processing software designed by the department. The designed solution must be restrictive in terms of size, weight and portability. A low power hardware is needed in order to feed the unit through external batteries, keeping a suitable performance. From a commercial point of view, a cost effective and high integrated solution is needed.