ashtech DG16 - DTM: Set Reference Datum

106 DG14 and DG16 Board & Sensor Reference Manual
DTM: Set Reference Datum
$PASHS,DTM,UDD
This commands allow you to select a user-defined datum type to use as a reference
for position computations and measurements. Parameters for the user-defined
datum are entered with the $PASHS,UDD command described on page 170.
$PASHS,DTM,s1
This command selects one of two datum types to be used as a reference for position
computations and measurements; s1 specifies the datum type:
A 3 character string that defines a particular datum
USR (User-Defined Datum— Parameters for user-defined datum are entered
with the $PASHS,UDD command described on page 170.
Table 6.15 lists the available predefined datums and associated reference
ellipsoids.
Table 6.15. Predefined Datums and Associated Reference Ellipsoids
Datum ID
Reference
Ellipsoid
Offset in meters
(dX,dY,dZ)
Datum Description
ARF Clarke 1880 -143, -90, -294 ARC 1950 (Botswana, Lesotho, Malawi,
Swaziland, Zaire, Zambia, Zimbabwe
ARS Clarke 1880 -160, -8, -300 ARC 1960 (Kenya, Tanzania)
AUA Australian
National
-133, -48, 148 ANS66 Australian Geodetic Datum 1966
(Australia, Tasmania Island)
AUG Australian
National
-134, -48, 149 ANS84 Australian Geodetic Datum 1984
(Australia, Tasmania Island)
BOO International 1924 307, 304, -318 Bogota, Bogota Observatory (Columbia)
CAI International 1924 -148, 136, 90 Campo, S. American Campo Inchauspe
(Argentina)
CAP Clarke 1880 -136, -108, -292 Cape (South Africa)
CGE Clarke 1880 -263, 6, 431 Carthage (Tunisia)
CHI International 1924 175, -38, 113 Chatham 1971 (Chatham, New Zealand)
CHU International 1924 -134, 229, -29 S. American Chua Astro (Paraguay)
COA International 1924 -206, 172, -6 S. American Corrego Alegre (Brazil)
EUA International 1924 -87, -96, -120 European 1950 (Western Europe: Netherlands,
Austria, France, F.R. of Germany, Switzerland,
Denmark)
EUE International 1924 -104, -101, -140 European 1950 (Cyprus)