Software defined radio platform for time and frequency metrology

Using software defined radio (SDR) systems for time and frequency metrology offers the possibility to perform measurements with high precision. Common off the shelf SDR systems are not always a good match for metrological applications as they do not generally offer ways to lock the local sampling clock to an external source or have lax noise requirements. We have built a flexible platform for SDR based time and frequency metrology based on a high-speed, multi-channel ADC and FPGA with integrated CPU.