TABLE 9

Generic CDO-Based SQM Algorithms for Dual-Frequency Civilian Signals

ITEMSCONFIGURATIONS
NameSCSQM8r
Carrier frequencyL1/B1L5/B2
CorrelatorObservableCDO
Location
(chips)
Baseline±1/80, ±3/80, ±5/80, ±7/80±1/8, ±3/8, ±5/8, ±7/8
Simplified−1/80, +1/80, +3/80, +5/80, +7/80−1/8, +1/8, +3/8, +5/8, +7/8
Integration period(seconds)1
Detection metricsBaseline8
Simplified5
Metric-smoothingPeriod (seconds)100
Improvement factor1.5 – 2.3
SignalGPS L1 C/ABDS B1C MEOBDS B2a MEO
Theoretical minimum receiving C/N0
(dB-Hz)
3937.539.3
Sampling frequency (MHz)≥33
Reference-smoothing stationsSIF = 1.5⌈(0.0199 · FS + 0.0176)−2⌉ ⌈(0.0151 · FS+0.0055)−2
SIF = 2.3⌈(0.0306 · FS + 0.0270)−2⌉ ⌈(0.0231 · FS + 0.0084)−2
Probability of false-alert1.5 ×10−7 per test
Probability of miss-detection1 ×10−3 per test
MERR (meters)1.612.89