Novatel OM-20000041 用户手册
C
Commands Summary
MiLLennium GPSCard Software Version 4.50 Command Descriptions Manual Rev 1
99
FIX VELOCITY
This command supports
INS
(Inertial Navigation System) integration. It accepts
ECEF
XYZ
velocity values in units
of meters per second (m/s). This information is only used by the tracking loops of the receiver to aid in reacquisition
of satellites after loss of lock, otherwise it is ignored. It is not used in the position solution and velocity calculations.
This command is only useful for very high dynamics where expected velocity changes during the signal blockage
of more than 100 meters per second can occur. See Figure D-2 for
of satellites after loss of lock, otherwise it is ignored. It is not used in the position solution and velocity calculations.
This command is only useful for very high dynamics where expected velocity changes during the signal blockage
of more than 100 meters per second can occur. See Figure D-2 for
ECEF
definitions. The
UNFIX
command is used
to clear the effects of the
FIX
VELOCITY
command. The
FIX
VELOCITY
command will override any previous
FIX
HEIGHT
or
FIX
POSITION
command. Use the
UNFIX
command to disable the current
FIX
command.
Syntax:
Example:
fix velocity 315,212,150
FIX VELOCITY
vx
vy
vz
Syntax
Range Value
Description
Default
Example
FIX VELOCITY
-
Command
unfix
fix velocity
vx
±999.99
X = Antenna Velocity (ECEF) in the X direction [m/s].
315
vy
±999.99
Y = Antenna Velocity (ECEF) in the Y direction [m/s].
212
vz
±999.99
Z = Antenna Velocity (ECEF) in the Z direction [m/s].
150