Udatum; Ion; Ionospheric/Tropospheric Correction - Motorola M12 Oncore User Manual

Set User Datum

udatum

Ionospheric/Tropospheric
Correction

ion

Motorola GPS Products
M12 Oncore User' s Guide Supplement
Revision 1.0 01/25/00
COMMAND DESCRIPTIONS
Function Defines the user-defined datum stored in datum ID
number 50.
Syntax udatum (id sma if dx dy dz)
id
sma
if
dx
dy
dz
Example udatum 50 6378206.4 294.9786982 –7 162 188<ENTER>
Notes Defines the constants used for a custom datum. These five
parameters uniquely define a reference ellipsoid.
See Also None
Binary Equivalent @@Ap
Function Switches the GPS ionospheric and/or tropospheric correction
models on or off.
Syntax ion ([ 0 | 1 | 2 | 3 ])
0
1
2
3
Example ion 0<ENTER>
Notes Default mode = 1
Ionospheric model enabled
Tropospheric model disabled
See Also None
Binary Equivalent @@Aq
50
semi major axis
inverse flattening constant
delta x
delta y
delta z
= both models disabled
= ionospheric model only enabled
= tropospheric model only enabled
= both models enabled
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