Sokkia GSR2700 IS, Operation Manuals, Page: 68 / 87

Appendix A
GSR2700 IS Operations Manual 57
Performance
(Subject to GPS System Characteristics)
Frequency 1575.42 MHz (L1) & 1227.60 MHz (L2)
Channels 12 x L1 and 12 x L2 with full code and carrier
Time to First Fix (TTFF)
• Cold start: 50 s (typical)
b
• Warm start: 40 s (typical)
c
• Hot start: 30 s (typical)
d
Signal Reacquisition • 0.5 sec L1 (typical)
• 0.5 sec L2 (typical)
Computed Data
Update Rate 20 solutions per second (maximum)
Measured Data Update
Rate 20 data records per second (maximum)
Position Accuracy
Static
e
:
• 3.0 mm + 0.5 ppm (horizontal)
• 10.0 mm + 1 ppm (vertical)
Rapid Static
e
:
• 5.0 mm + 1 ppm (horizontal)
• 10.0 mm + 1 ppm (vertical)
Kinematic, Stop-and-Go
e
:
• 10.0 mm + 1 ppm (horizontal)
• 20.0 mm + 1 ppm (vertical)
RTK
f
:
• 10.0 mm + 1 ppm (horizontal)
• 20.0 mm + 1 ppm (vertical)
Differential (DGPS) WAAS/EGNOS: 0.8 m CEP
Latency 0.02 sec (typical)
Stand-Alone Position 1.5 m CEP (4.9 ft)
Time Accuracy
(relative)
g
20 ns (SA off)
Height Limit Up to 18,288 m (60,000 feet), in accordance with
export licensing
RTK Initialization
h 3–10 sec (typical) based on satellite constellation
and baseline length
Table 17: GSR2700 IS Technical Specifications (continued)