Solar Radio Burst Event 2017-09-06

Contact: iono@gnss.be

SUMMARY OF THE EVENT: The solar radio bursts of the 06/09/2017 impacted the GPS signal reception at both frequencies L1 and L2. On L1, two fades above 1dB/Hz were detected at 12h01 and 12h05. On L2, a first fade above 3dB/Hz which could potentially affect the GNSS application, occurred for 3 min with a maximum of -6.251.6dB/Hz at 12h02. It was followed by a second lower fade above 1dB/Hz at 13h03. For additional information about the burst on a larger frequency spectrum see at SIDC Humain Radioastronomy Station.

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: