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4.0, 1998 Coordination Scientific Information Center (CSIC). Please see the following table for the reference
ellipsoid constants.
ELLIPSOID
Parameters of Earth 1990
Syntax:
PZ90TOWGS84 option [∆x] [∆y] [∆z] [δs] [ε] [φ] [ω]
Options:
ARGUMENT
DEFAULT
Set to default Helmert transformation parameters
SET
Set to user specified values (all must be specified, see following table)
PARAMETER
∆x
Origin offset in x direction [m]
∆y
Origin offset in y direction [m]
∆z
Origin offset in z direction [m]
δs
Scale factor given in parts per million (ppm), final linear scale factor given as (1 + δs*10
ε
Small angle rotation around u axis [arcsec]. A positive sign for counter clockwise direction and
a negative sign for clockwise direction taking into consideration that the trasformation is going
from PZ90 to WGS84.
φ
Small angle rotation around v axis [arcsec]. A positive sign for counter clockwise direction and
a negative sign for clockwise direction taking into consideration that the trasformation is going
from PZ90 to WGS84.
ω
Small angle rotation around w axis [arcsec]. A positive sign for counter clockwise direction and
a negative sign for clockwise direction taking into consideration that the trasformation is going
from PZ90 to WGS84.
Example:
PZ90TOWGS84 DEFAULT
PZ90TOWGS84 SET 0.1,0.4,-0.3,6,0,0,4
NOTE:
The format and sign conventions in this command are set up to conform to the given reference and differ
from the NovAtel USERDATUM command.
GPS/GLONASS Receiver User Manual Rev 1
a (metres)
1/f
6378136.0
298.257839303
DESCRIPTION
DESCRIPTION
G GLONASS Commands
f
0.00335280374302
-6
)
83
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