The project aims to design and build a control system for a new GNSS reflectometer. The instrument has two antenna arrays and it is needed to electronically steer the beams of these arrays (each array has two frequency bands and two beams per band) to point some satellites and the ground point where the transmitted signals from these satellites reflect. To achieve this, the instrument needs to determine the position and attitude of the sensor using GNSS receivers and IMUs and then it will calculate the appropriate phase shifts for the beamformers. The system also will take