How modernized and strengthened GPS signals enhance the system performance during solar radio bursts

A Solar Radio Burst (SRB) is one of the most severe natural hazards affecting performance global navigation satellite systems (GNSS). Considering influence different threat factors, GNSS developers upgrade to amend accuracy and noise-proof features systems. In particular, GPS gradually replaces “old” satellites (GPS IIA, IIR-A, IIR-B) with new-generation equipment IIR-M, IIF, III) featured by an increase in emitted signal power at L2 frequency new civilian codes. this work, based on examples extreme SRB September 24, 2011, 6, 2017, we study how such modernization can improve system during solar flares accompanied intense SRB. We recorded SRB-related drops strength (S), which were 7.5/0 dB-Hz for S1C, 10/7 S2X, 17/8 S2W 9/7.5 S5/S5X 2011/2017 correspondingly. The drop modernized blocks was comparable amplitude those blocks. However, IIR-M/IIF about 5 higher strength. This resulted a double triple decrease loss-of-lock density 2011 respectively, as compared IIA/IIR-A SRBs. Therefore, codes potentially enhance stability operation.