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238 MiLLennium Command Descriptions Manual
Table D-11 GPSCard Range Reject Codes
Table D-12 GPSCard Velocity Status
Table E-1 Comparison of RT-2 and RT-20
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➀
Not yet implemented in receiver firmware revision 3.34
Value Description
0 Observations are good
1 Bad satellite health is indicated by ephemeris data
2 Old ephemeris due to data not being updated during last 3 hours
3 Eccentric anomaly error during computation of the satellite’s position
4 True anomaly error during computation of the satellite’s position
5 Satellite coordinate error during computation of the satellite’s position
6 Elevation error due to the satellite being below the cutoff angle
7 Misclosure too large due to excessive gap between estimated and actual positions
8 No differential correction is available for this particular satellite
9 Ephemeris data for this satellite has not yet been received
10 Invalid IODE due to mismatch between differential stations
11 Locked Out: satellite is excluded by user (LOCKOUT command)
12 Low Power: satellite rejected due to low signal/noise ratio
13 L2 measurements are not currently used in the filter
Value Description
0 ➂Velocity computed from differentially corrected carrier phase data
1 ➂Velocity computed from differentially corrected Doppler data
2 ➂Old velocity from differentially corrected phase or Doppler (higher latency)
3 Velocity from single point computations
4 Old velocity from single point computations (higher latency)
5 Invalid velocity
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
MiLLennium L1/L2 transmitting RTCA
(i.e. RTCAOBS and RTCAREF)
MiLLennium L1/L2 receiver 100 metre 2DRMS
MiLLennium RT-2 receiver 2 centimetre CEP
GPSCard RT-20 receiver ➀ 20 centimetre CEP
MiLLennium L1/L2 transmitting RTCM type 3 and 59 MiLLennium L1/L2 receiver 100 meter 2DRMS
MiLLennium RT-2 receiver 20 centimetre CEP
GPSCard RT-20 receiver 20 centimetre CEP
GPSCard RT-20 transmitting RTCM type 3 and 59 MiLLennium L1/L2 receiver 100 meter 2DRMS
MiLLennium RT-2 receiver 20 centimetre CEP
GPSCard RT-20 receiver 20 centimetre CEP
GPSCard RT-20 or MiLLennium L1/L2 transmitting RTCM or
RTCA type 1
MiLLennium L1/L2 receiver 1 metre SEP
MiLLennium RT-2 receiver 1 metre SEP
GPSCard RT-20 receiver 1 metre SEP