Scope And Purpose - Kongsberg EM 2000 Maintenance Manual

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Scope and purpose

This document defines the interfaces and use of the component
Projection. The purpose with the document is to describe how
the component interfaces with other components, and how the
component is to be used.
Projection overview
Each and every survey should have a well defined projection.
The Kongsberg Maritime Software will use the defined
projection in all geographic displays and in many other
programs where a projection is needed.
There are three major different ways to define a projection in
the Kongsberg Maritime Software:
1 You have full access to the library PROJ.4 from USGS.
2 You can give Kongsberg Maritime the source code (in
"C") to his preferred projection, and make that projection
a permanent part of all Kongsberg Maritime Software.
3 You can program your own projections into the shared
library (libsharedProj.so) which is used in all Kongsberg
Maritime Software. A template of the source code is
supplied by Kongsberg Maritime.
It should be noted that Kongsberg Maritime knows nothing
about what goes on inside your projection routines. Some of
these routines may contain datum transformations which should
be known to the system operator.
Projection protocol
You should for each and every survey define your preferred
projection. The projection used in a survey is defined in the file
$PROCHOME/<survey>/projection.data
The first word in the first line defines which projection to use.
The file may look like this:
1 If the first word is "RijksDriehoksnet", the preferred
projection for the Netherlands is used.
2 If the first word is "utm", a UTM-projection is used.
Setting the UTM zone is however a little tricky:
utm
0 3
0 3
If the file looks like the above, UTM zone 31 is selected.
The number 3 is the longitude.
System administration
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