Gps Performance; Receiver; Acquisition Times; Update Rate - Garmin GPS 15L Technical Specifications

1.5.4

GPS Performance

1.5.4.1 Receiver

WAAS Enabled™, 12 parallel channel GPS receiver continuously tracks and uses up to 12 satellites (up to
11 with PPS active) to compute and update your position.

1.5.4.2 Acquisition Times

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Reacquisition: Less than 2 seconds
•
Warm: Approx. 15 seconds (all data known)
•
Cold: Approx. 45 seconds (initial position, time, and almanac known; ephemeris unknown)
•
AutoLocate®: 5 minutes (almanac known; initial position and time unknown)
•
SkySearch: 5 minutes (no data known)

1.5.4.3 Update Rate

1 second default; NMEA 0183 output interval configurable from 1 to 900 seconds in 1-second increments.

1.5.4.4 Accuracy

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GPS Standard Positioning Service (SPS)
Position: < 15 meters, 95% typical
Velocity: 0.1 knot RMS steady state
•
DGPS (USCG/RTCM)
Position: 3-5 meters, 95% typical
Velocity: 0.1 knot RMS steady state
•
DGPS (WAAS)
Position: < 3 meters, 95% typical
Velocity: 0.1 knot RMS steady state
•
PPS Time: ±1 microsecond at rising edge of PPS pulse (subject to Selective Availability)
•
Dynamics: 999 knots velocity (only limited at altitude greater than 60,000 feet), 6g dynamics
190-00266-01 GPS 15H & 15L Technical Specifications
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Rev. D