Javad TRIUMPH-LS, User Manual

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139
Localization
(such as N 5000, E 5000) closely related to the ground
(at a particular ellipsoid height) such that grid inverse
distances will closely match ground distances provided the
distance is relatively short, with relatively small changes
in elevation (1ppm error is induced by every 11.2 miles
horizontal distance or 21 feet of elevation distance between
points). Default orientation of the central meridian of this
coordinate system is GEODETIC NORTH, however this can
be changed to any desired orientation. The underlying
projection type for the resulting Coordinate System is an
Oblique Stereographic.
What you need
1. Geodetic Coordinate of the desired origin point (can
be a physical, surveyed point or scaled/assumed)
2. User Defined Grid Coordinates of the origin point
(generally recommended to select Northing and
Easting values that will allow all coordinates in the
project to be positive values).
Begin by creating a new Project – HOME>COLLECT or
{COLLECT} hard button
Press the upper left Project Button, Create New Project, fill
in Project Name, and Select a Project Coordinate System.
This will be the system on which the new local coordinate
system will be based.
Next go to the Localize screen HOME>LOCALIZE.
For this Localization I’ve created an unknown coordinate
system named “My Job” by pressing the CS button
under Design, selecting the generic Unknown system
accompanied by the date and renaming it to “My Job”.
NOTE: A Coordinate System is considered “Unknown” until
the system has a Geodetic Reference (for example, Grid
Coordinate N, E = Geographic Coordinate N Lat, W Long).