M e r i d i a n I I U s e r M a n u a l
30
C H A P T E R T H R E E
31
M e r i d i a n I I U s e r M a n u a l
C O N T R O L A N D S T A T U S C O M M A N D S
Command:
gpstrkstat
MeridianII reply:
Ch SV Azimuth Elev C/No
1 23 -108.41 +15.70 41.7
2 11 -118.21 +45.58 46.9
3 22 +107.41 +21.04 37.9
4 14 +52.10 +29.76 40.4
5 32 -40.36 +58.18 45.2
6 1 -79.14 +55.53 46.6
7 31 +127.87 +62.60 47.3
8 0 +0.00 +0.00 0.0
9 0 +0.00 +0.00 0.0
10 0 +0.00 +0.00 0.0
11 0 +0.00 +0.00 0.0
12 0 +0.00 +0.00 0.0
gpsutcinfo
This command displays the IS-GPS-200 almanac parameters which are used to relate GPS time to
UTC. The first line of output contains the current (LS) and future (LSF) leap second values and the
GPS week number (WN_lsf) and day of week (DN) at the end of which the future leap second will
take effect. This could be in the past if a leap second insertion has recently taken place. Leap second
events occur every few years on either June 30 or December 31.
The second line of output contains the parameters for calculating the small residual offset between
the GPS master clock ensemble and UTC(USNO). This is typically less than 10 nanoseconds. The
remaining output shows the current value of the GPS-UTC offset.
Command:
gpsutcinfo
MeridianII reply:
GPS UTC Almanac Parameters:
LS = 18 LSF = 18 WN_lsf = 1694 DN = 7
a0 = +9.313226e-10 a1 = -1.243450e-14 WN_t = 1727 t_ot = 61440
Current (GPS - UTC) Offset:
GPS - UTC = (18 + 3.810e-09) s @ WN = 1726, TOW = 434757
gpsversion
This command displays the firmware and hardware versions of the GPS Subsystem.
Command:
gpsversion
MeridianII reply:
F/W 6010-0076-000 Ver 1.00 - FPGA 6020-0016-000 Ver 01 - JUL 15 17:03:27 2015
help
This command displays a list of Meridian II commands (not Linux commands). To get help on a
particular command you would type
help
, followed by the command.
Command:
help
MeridianII reply: Meridian II commands are displayed.
Command:
help gpsstat
MeridianII reply: Information specific to the
gpsstat
command is displayed.
Summary of Contents for Meridian II
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