What Is Waas - Furuno GP-7000F Operator's Manual

What is WAAS?

WAAS, available in North America, is a provider in the worldwide SBAS (Satellite
Based Augmentation System) navigation system. CBAS provides GPS signal correc-
tions to SBAS users, for even better position accuracy, typically better than three
meters. There are two more SBAS providers, MSAS (Multi-Functional Satellite Aug-
mentation System) for Japan and EGNOS (Euro Geostationary Navigation Overlay
Service) for Europe. All providers are compatible with one another, thus providing
seamless position fixes to SBAS users. The illustration below shows the coverage ar-
ea. (Accuracy may be affected when using a GEO satellite not within your current lo-
cation.) This manual uses WAAS for these three providers generically.
Provider Satellite type
WAAS Inmarsat-3-F4
Inmarsat-3-F3 (POR)
Intelsat Galaxy XV
TeleSat Anik FIR
EGNOS Inmarsat-3-F2 (AOR-E)
Artemis
Inmarsat-3-F5 (IOR-W)
MSAS MTSAT-1R
MTSAT-2
EGNOS
142 ° E
178 ° E
133 ° W
107.3 ° W
15.5 ° W
21.5 ° E
25 ° E
140 ° E
145 ° E
MSAS
Longitude
WAAS
Satellite No.
122
134
135
138
120
124
126
129
137
AP-5