Справочник Пользователя для Furuno gp-3500

AP-9

WHAT IS WAAS?

WAAS, available in North America, is a provider in the woridwide SBAS (Satelite
Based Augmentation System) navigation system. CBAS provides GPS signal
corrections to SBAS users, for even better position accuracy, typically better
than three meters. Two more SBAS providers are also currently under
development, MSAS (Multi-Functional Satellite Augmentation System) for Japan
and EGNOS (Euro Geostationary Navigation Overlay Service) for Europe. All
providers will be compatible with one another, thus providing "seamless" position
fixes to SBAS users. The illustration below shows the coverage area. (Accuracy
may be affected when using a GEO satellite not within your current location.)

Satellite, Region

120, AOR-E

15.5

122, AOR-W

131, IOR

64.5

134, POR

178

Position

150

W 120

W 90

W 60

W 30

W 0 30

E 60

E 90

E 120

E 150

150

W 120

W 90

W 60

W 30

W 0 30

E 60

E 90

E 120

E 150

WAAS

EGNOS

MSAS

131

134

122

120

At the time of this software release, SBAS is still under development (Providers
are expected to have initial operations capability from the times shown above.)
During this developmental period, which may last for several years, there is no
guarantee of the accuracy, integrity, continuity, or availability of the SBAS signal.
Furuno will accept no responsibility for the use of the signal for other than the
above stated purpose. It is the user’s responsibility to exercise common
prudence and navigational judgment while using the SBAS signal. Users are
reminded that the SBAS has not been commissioned for use in safety of life
applications (SOLAS) and must be turned to the "OFF" position on any SOLAS
vessels.