Spectra-precision Survey Pro CE v3.60 GPS User Manual Manual do Utilizador Página 137

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GPS Reference Manual
42
Projection Key In Setup - Oblique Mercator
This page is only displayed when the
Zone type
is set to
Oblique
Mercator Angle
.
Azimuth At
: is where you enter the convention
for projection azimuth. Your choices are:
Equator
:
Center of Projection
:
Origin At
: is where you enter the convention
for projection azimuth.
Equator
:
Center of Projection
:
Projection Key In Setup - Ellipse
The following screen is only displayed when
Datum type
is
Molodensky
or
Similarity
.
Choose an ellipse for the new zone.
Ellipse from Data Base
: choose this option
to use the selected data base ellipsoid.
Key in Ellipse
: choose this option to enter
the values for the custom ellipsoid.
Values
: is where you enter the values for the
custom ellipse if you are not using
Ellipse from
List
:
Ellipse a
: is where you enter the semi major
axis of the new ellipsoid.
Other Parm
: is where you select the other ellipse parameter to enter.
You can use one of: Semi minor axis; Flattening; Reciprocal
flattening; First eccentricity; First eccentricity squared; Second
eccentricity; Second eccentricity squared.
Projection Key In Setup - Datum Translations
Choose an ellipse for the new zone.
Ellipse from List
: choose this option to use the selected data base
ellipsoid.
Ellipse Values
: choose this option to enter the values for the
custom ellipsoid.
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