Solar Radio Burst Event 2015-11-04

Contact: iono@gnss.be

SUMMARY OF THE EVENT: The signal reception of the GNSS L2 frequency was affected by a solar radio burst on 4th November 2015 between 14:20 and 15:02 (UTC). The maximum peak was observed at 14:29 UTC with a median fade of -5.8±2.2 dB.Hz over all EPN stations and a maximum fade of -10 dB.Hz.

GNSS Carrier to Noise Density Time Series

Figure 1: GNSS Carrier to Noise Density (C/N0) Time Series at L1 and L2 frequencies

GNSS stations providing C/N0 observations

Figure 2: GNSS stations providing C/N0 observations


Figure 1 shows the abnormal evolution of the carrier-to-noise density (C/N0) from the EPN real-time GNSS network at L1 and L2 frequencies. Monitoring C/N0 fades over the whole EPN network allows detecting Solar Radio Burst (SRB) affecting the GNSS signal reception at 4 levels:

  • quiet
  • moderate : SRB detected but should not impact GNSS applications,
  • strong : potential impact on GNSS applications,
  • severe : potential failure of the GNSS receivers.