Aeronautical Ground Data Unit
GDU - Square Peg Communications Inc. (SPCI)
Square Peg Communications Inc.’s Aeronautical Ground Data Unit (GDU) is a software application that runs on the generic Physical Layer Tester (PLT) platform. The GDU supports the testing of physical layer performance and protocol operation for Ground Earth Stations (GESs) and Aeronautical Earth Stations (AESs) implementing Inmarsat Aero services.