Development of an opensource, openhardware, software-defined radio platform for two-way satellite time and frequency transfer

International audienceWe describe an opensource, openhardware experimental Software-Defined Radio setup for prototyping various digital communication over microwave links with a geostationary satellite for assessing the impact of the various parameters ona Two-Way Satellite Time and Frequency Transfer link. Results consistent with the proprietary SATRE modem are demonstrated, including sub-ns resolution on ranging and two-way measurements.The emitted signal structure and impact of code length are assessed, and the signal acquisition and processing are described