Novatel OM-20000041 用户手册
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Listing Of Tables
258
MiLLennium GPSCard Software Version 4.50 Command Descriptions Manual Rev 1
Table D-11
GPSCard Range Reject Codes
Table D-12
GPSCard Velocity Status
Table E-1
Comparison of RT-2 and RT-20
.
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
Higher numbers are reserved for future use
Value
Description
0
Velocity computed from differentially corrected carrier phase data
1
Velocity computed from differentially corrected Doppler data
2
Old 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
Higher numbers are reserved for future use
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
Standard GPSCard transmitting RTCA
MiLLennium RT-2 receiver
2 centimetre CEP
GPSCard RT-20 receiver
20 centimetre CEP
Standard GPSCard transmitting RTCM type 3 and 59
MiLLennium RT-2 receiver
20 centimetre CEP
GPSCard RT-20 receiver
20 centimetre CEP
RT-20 GPSCard transmitting RTCM type 3 and 59
MiLLennium RT-2 receiver
20 centimetre CEP
GPSCard RT-20 receiver
20 centimetre CEP
RT-20 Standard GPSCard transmitting RTCM or
MiLLennium RT-2 receiver
1 metre SEP
GPSCard RT-20 receiver
1 metre SEP
Standard GPSCard transmitting RTCM type 18 and
MiLLennium RT-2 receiver
20 centimetre CEP
RT-20 receiver
n/a
1
The RTCM1819 message can only be transmitted and received by MiLLennium GPSCards