000005201 001__ 5201
000005201 005__ 20210127142405.0
000005201 037__ $$aCTALK-2021-0016
000005201 100__ $$aChevalier, Jean-Marie
000005201 245__ $$aSolar radio burst interference index dedicated to GNSS single and double frequency users
000005201 260__ $$c2020
000005201 269__ $$c2020-05-04
000005201 520__ $$aIntense solar radio bursts (SRBs) emitted at L-band frequencies are a source of radio frequency interference for Global Navigation Satellite Systems (GNSS) by inducing a noise increase in GNSS measurements, and hence degrading the carrier-to-noise density (C/N0). Such space weather events are critical for GNSS-based applications requiring real-time high-precision positioning. Since 2015, the Royal Observatory of Belgium (ROB) monitors in near real-time the C/N0 observations from the European Permanent Network (EPN). The monitoring allows to detect accurately the general fades of C/N0 due to SRBs over Europe as from 1 dB-Hz. It provides in near real-time a quantification of the GNSS signal reception fade for the L1 C/A and L2 P(Y) signals and notifies civilian single and double frequency users with a 4-level index corresponding to the potential impact on their applications. This service is part of the real-time monitoring service of the PECASUS project of the International Civil Aviation Organization (ICAO) which started end of 2019. Results of this 5-year monitoring will be discussed, including the 3 SRBs of 2015 and 2017, together with the new developments toward a global index using the International GNSS Service (IGS) network. In addition, we will show how the SRB monitoring is sometimes interfered by GPS flex power campaigns on the satellites from blocks IIR-M and IIF, and how it is mitigated . The routine and transient GPS flex power campaigns will be presented in terms of C/N0 variations for the EPN and IGS networks.
000005201 594__ $$aSTCE
000005201 700__ $$aBergeot, Nicolas
000005201 700__ $$aDefraigne, Pascale
000005201 700__ $$aMarque, Christophe
000005201 700__ $$aPinat, Elisa
000005201 773__ $$tEGU, online
000005201 8560_ $$fjean-marie.chevalier@observatoire.be
000005201 85642 $$ahttps://meetingorganizer.copernicus.org/EGU2020/EGU2020-15904.html
000005201 906__ $$aContributed
000005201 980__ $$aCTALKCONT