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190-00228-20 GPS 16/17 Technical Specifications Rev. C
Page 6
1.7.4 GPS Performance
1.7.4.1 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.
1.7.4.2 Acquisition Times
• 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)
1.7.4.3 Sentence Rate
• GPS 16LVS, 16HVS,
17HVS, & 17N: 1 second default; NMEA 0183 output interval configurable from 1 to 900
seconds in 1-second increments
• GPS 16A: 1 second independent update rate, propagated every 200 milliseconds
1.7.4.4 Accuracy
• GPS Standard Positioning Service (SPS)
Position: < 15 meters, 95% typical (100 meters with Selective Availability on)
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 (Not available on GPS 16A or 17N): ±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