Novatel OM-20000041 用户手册
3
Data Logs
38
MiLLennium GPSCard Software Version 4.50 Command Descriptions Manual Rev 1
GPS
time is based on an atomic time scale. Universal Time Coordinated (
UTC
) time (reported in
NMEA
logs) is also
based on an atomic time scale, with an offset of seconds applied to coordinate Universal Time to
GPS
time.
GPS
time is designated as being coincident with
UTC
at the start date of January 6, 1980 (00 hours).
GPS
time does not
count leap seconds, and therefore an offset exists between
UTC
and
GPS
time. The
GPS
week consists of 604800
seconds, where 000000 seconds is at Saturday midnight. Each week at this time, the week number increments by
one, and the seconds into the week resets to 0. (See Appendix H, Some Common Unit Conversions, Page 236 for
an example)
one, and the seconds into the week resets to 0. (See Appendix H, Some Common Unit Conversions, Page 236 for
an example)
3.6 STANDARD LOG TABLES
Table 3-1 lists the logs by function while Table 3-2 is an alphabetical listing of logs. Please see Appendix D, Page
136 for a more detailed description of individual NovAtel and NMEA format logs which are listed alphabetically.
RTCM and RTCA format data logs and receiver-independent RINEX logs will be found in Chapter 4. Special
Pass-Through logs are found in Section 3.8.
136 for a more detailed description of individual NovAtel and NMEA format logs which are listed alphabetically.
RTCM and RTCA format data logs and receiver-independent RINEX logs will be found in Chapter 4. Special
Pass-Through logs are found in Section 3.8.
Table 3-1
Logs By Function Table
COMMUNICATIONS, CONTROL AND STATUS
Logs
Descriptions
CDSA/B
COM port communications status
COM1A/B
Log data from COM1
COM2A/B
Log data from COM2
COMnA/B
Pass-through data logs
RCSA/B
Receiver self-test status
RTCM16T
NovAtel ASCII format special message
RTCM16
RTCM format special message
GENERAL RECEIVER CONTROL AND STATUS
Logs
Descriptions
PVAA/B
Receiver’s latest computed position, velocity and acceleration in ECEF coordinates
RCCA
Receiver configuration status
RCSA/B
Version and self-test status
RVSA/B
Receiver status
VERA/B
Receiver hardware and software version numbers
POSITION, PARAMETERS, AND SOLUTION FILTERING CONTROL
Logs
Descriptions
DOPA/B
DOP of SVs currently tracking
GGAB
GPS fix data
GPGGA
NMEA, position data
GPGLL
NMEA, position data
GPGRS
NMEA, range residuals
GPGSA
NMEA, DOP information
GPGST
NMEA, measurement noise statistics
MKPA/B
Position at time of mark
POSA/B
Position data
PRTKA/B
Computed position
PVAA/B
Computed position, velocity and acceleration in ECEF coordinates
PXYA/B
Position (Cartesian x,y,z coordinates)
RTKA/B
Computed position
SPHA/B
Speed and direction over ground