The PolaRxS and the newest PolaRx5S are multi-frequency multi-constellation receiver able to track GPS L1CA, L1P, L2C, L2P, L5; GLONASS L1CA, L2CA; Galileo E1, E5a, E5b, E5AltBoc; COMPASS B1, B2; SBAS L1. They are equipped with a low-noise OCXO oscillator and stores, for every satellite in view and for every available frequency, the raw phase (in cycles) and post-correlation I and Q samples acquired at a sampling rate of 50/100 Hz. They are able to provide, with a 1-minute resolution, the amplitude (S4) and phase (sF) scintillation indices, together with the Total Electron Content (TEC) and its rate of change (ROT).
