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Table 2 Summary of SBAS performance with and without ECDSA and TESLA authentication, for cases with PER = 0 and PER = 1 × 10–3

From: Advances of SBAS authentication technologies

Items Results for PER = 0   Results for PER = 1 × 10–3   
  No authentication ECDSA/TESLA No authentication ECDSA TESLA
L1-I      
VPE 95% 2.86 m 2.90 m 2.86 m 2.94 m 2.93 m
VPL 99% 17.37 m 17.57 m 17.38 m 17.93 m 17.91 m
Continuity risk  < 8 × 10–6  < 8 × 10–6  < 8 × 10–6 7.7 × 10–3 5.9 × 10–3
Availability (PL < AL) 99.71% 99.63% 99.71% 99.80% 99.19%
AER N/A 0 N/A 0.5% 0.3%
L5-I      
VPE 95% 1.66 m 1.72 m 1.66 m 1.72 m 1.72 m
VPL 99% 9.98 m 10.33 m 9.98 m 10.39 m 10.43 m
Continuity risk  < 8 × 10–6  < 8 × 10–6  < 8 × 10–6 5.8 × 10–3 7.1 × 10–3
Availability (PL < AL) 99.89% 99.85% 99.89% 99.17% 99.45%
AER N/A 0 N/A 0.5% 0.3%