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Specifications of DD-80
GPS Receiver
Number of receiving channels 12 channels, 12 satellite tracking
Rx frequency 1575.42 MHz
Rx code C/A code
Antenna Flat antenna
Position fixing system All in view, 8-state Kalman filter
Position accuracy Approx. 10m, 95% of the time, Horizontal dilution
of position (HDOP) ≤ 1
Note: All GPS receiver are subject to degradation
of position and velocity accuracies under the U.S.
Department of Defence. Position may be degraded.
DGPS: Approx. 5 m, 95% of the time
Tracking velocity 900 kts
Position-fixing time Warm start: 20 seconds
Cold start: 2 minutes
Position update interval 1 second
Display Section
LCD 122 x 92 mm (320 x 240 dot matrix)
Display mode Plotter modes 1 and 2, Highway, Navigation Data
Display Mercator projection
Track recording capacity: 2,000 pts.
Buoy graphic (option)
YEOMAN waypoint display
Waypoint storage capacity 999 pts. with comment (12 character)
Route storage capacity 30 routes (30 waypoints per route)
Simple route: 1 route/30 waypoints
Event mark storage capacity 99 points
Alarms Waypoint arrival, Anchor watch, Cross track error,
Speed, Trip, Water temperature, Depth