Trimble GNSS Receiver South Galaxy G3 Dual Frequency Gps Receiver
Sensors | Free Full-Text | Precise Point Positioning Using World's First Dual-Frequency GPS/GALILEO Smartphone
Dual-frequency GNSS on Android devices | by Sean Barbeau | Medium
Galileo Hits the Spot: Testing GNSS Dual Frequency with Smartphones - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design