Solar Radio Burst Event 2017-09-07

Contact: iono@gnss.be

SUMMARY OF THE EVENT: Two small solar radio bursts occurred the 7th of September 2017. They were detected by the GNSS EPN stations but should not impact GNSS applications. The first one was at 10:16 in the L2 frequency band with a maximum fade of GPS signal reception of -1.000.59dB-Hz. The second one at 14:36, for the 2 frequency bands L1 and L2 with a maximum fade of -1.750.86dB-Hz at L1 and -1.250.97dB-Hz at L2.

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.

About this event, see also: