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MiLLennium GPSCard SW Version 4.503/4.52 Command Descriptions Manual Rev 2 265
Table E-1 Comparison of RT-2 and RT-20
.
Table E-3 RT-2 Performance: Static Mode
Table E-4 RT-2 Performance: Kinematic Mode
RT-2 RT-20
GPS Frequencies Utilized
L1 & L2 L1
Nominal Accuracy
2 cm (CEP) 20 cm (CEP)
Lane Searching
Wide lane and narrow lane None
Table E-2 RTK Messages Vs. Accuracy
Transmitting (Reference) Receiving (Remote) Accuracy Expected
GPSCard transmitting RTCA
(i.e. RTCAOBS and RTCAREF)
RT-2 receiver 2 centimetre CEP
RT-20 receiver 20 centimetre CEP
GPSCard transmitting RTCM type 3 and 59 RT-2 receiver 20 centimetre CEP
RT-20 receiver 20 centimetre CEP
GPSCard transmitting RTCM or RTCA type 1 RT-2 receiver 1 metre SEP
RT-20 receiver 1 metre SEP
Transmitting RTCM type 18 and 19 with type 3 RT-2 receiver 2 centimetre CEP
RT-20 receiver 20 centimetre CEP
Transmitting CMR
(i.e. CMROBS and CMRREF)
RT-2 receiver 2 centimetre CEP
RT-20 receiver 20 centimetre CEP
Baseline
length
Time since L2 lock-on
with at least 6 satellites
above mask angle
Horizontal accuracy at
the stated time
Runs meeting the stat-
ed accuracy at the
stated time
< 10 km 70 seconds + 1.5 sec/km 2 cm + 0.5 ppm 75.0%
< 10 km 5 minutes 1 cm + 1 ppm 75.0%
< 15 km 4 minutes 5 cm 66.7%
< 25 km 7 minutes 7 cm 66.7%
< 35 km 10 minutes 35 cm 66.7%
< 35 km 30 minutes 25 cm 66.7%
Baseline
length
Time since L2 lock-on
with at least 6 satellites
above mask angle
Horizontal accuracy at
the stated time
Runs meeting the
stated accuracy at
the stated time
< 10 km 120 seconds + 1.5 sec/km 2 cm + 0.5 ppm 75.0%
< 15 km 8 minutes 8 cm 66.7%
< 25 km 14 minutes 10 cm 66.7%
< 35 km 20 minutes 40 cm 66.7%
< 35 km 60 minutes 25 cm 66.7%