This article was published in Inside GNSS, July-August 2015 issue.
RENÉ JR. LANDRY
ÉCOLE DE TECHNOLOGIE SUPÉRIEURE
Conceptually, software-defined GNSS simulators are very attractive due to their flexibility and cost benefits. For practical reasons, such a simulator should be full-featured with real-time capabilities. Thanks to advances in the design and capabilities of graphics processing units, the real-time computational capabilities of the conventional PC are significantly improved. This article describes the development and performance of an SDR simulator that combines the real-time computational capabilities of a GPU with the universal software radio peripherals. To evaluate that performance, the research described here uses high-grade GNSS receivers.