
G
GLONASS Commands
GPS/GLONASS Receiver User Manual Rev 1
83
4.0, 1998 Coordination Scientific Information Center (CSIC). Please see the following table for the reference
ellipsoid constants.
Syntax:
PZ90TOWGS84 option [
∆
x] [
∆
y] [
∆
z] [
δ
s] [
ε
] [
φ
] [
ω
]
Options:
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.
ELLIPSOID
a (metres)
1/f
f
Parameters of Earth 1990
6378136.0
298.257839303
0.00335280374302
ARGUMENT
DESCRIPTION
DEFAULT
Set to default Helmert transformation parameters
SET
Set to user specified values (all must be specified, see following table)
PARAMETER
DESCRIPTION
∆
x
Origin offset in x direction [m]
∆
y
Origin offset in y direction [m]
∆
z
Origin offset in z direction [m]
δ
s
Scale factor given in parts per million (ppm), final linear scale factor given as (1 +
δ
s*10
-6
)
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.