Raymarine 300 manual Availability of the WAAS System in North America, Extended Offshore Coverage

Models: 300

1 136
Download 136 pages 59.73 Kb
Page 4
Image 4
Figure i: The WAAS System

iv

Raynav 300 GPS Plotter

￿￿￿￿￿￿￿

Figure i: The WAAS System

Availability of the WAAS System in North America

The WAAS system is presently broadcasting and being tested for aviation use. It is expected to be certified by the FAA in 2002. During this testing and certification period, continuous service is expected; however, brief signal outages may occur as refinements and upgrades are made to the system. The status of WAAS and planned outages are available on-line at the following websites:

http://wwws.raytheontands.com/waas or http://www.raymarine.com

Your unit is shipped from the factory in normal GPS mode. For improved accuracy provided by the WAAS system, you need to enable the WAAS capability of your unit.

To enable WAAS:

1.Press the MENU key

2.Press GPS SETUP soft key

3.Press FIX MODE soft key to select SD mode.

Extended Offshore Coverage

Using two GEO satellites, WAAS provides augmented differential GPS coverage for most of North America. Since the WAAS differential messages are broadcast by GEO satellites, the WAAS signals cover a greater area both inland and offshore in comparison with land based DGPS systems. Coverage for North America is shown in Figure ii.

Page 4
Image 4
Raymarine 300 manual Availability of the WAAS System in North America, Extended Offshore Coverage, Figure i The WAAS System