Vaisala IRIS - Page 23

Projection
Description
1)
Universal transverse Mercator
(UTM)
A projection just like Mercator with the axis reversed at a selectable
longitude. The horizontal dimension is compressed by a factor of 0.9996.
By convention the reference longitudes should be multiples of 6°.
Used by the military, and is good for regions with long North-South
extent. (Page 48)
1) Page numbers refer to the projection equations from Map Projections – A Working Manual, U.S. Geological Survey
Professional Paper 1395.
2) Available in IRIS Focus
1. To configure a standard radar display centered on the radar:
• For the projection type, select Projection Configuration > Azimuthal Equidistant.
• For the Projection Name, select <NONE>.
Most of the time you do not need to create or use special projection files.
If you want the radar o-center, you must configure a projection file as described
starting from step 3.
If you have already configured and saved a projection, go to step 2.
2. To use a pre-configured projection, select Projection Configuration > Projection Name.
• A list of available projection files on the system is shown.
• In the example, the radar Max Range and Output Pixel Resolution are desensitized
since they are defined by the projection file that is selected.
• Select <NONE> for the Projection Name in which case the radar is defaulted to be
at the center of the screen. Additionally in the case of an AED projection, the radar is
defined to be the map reference point. In this case, the Max Range and Resolution
fields are configurable in the Product Configuration Menu.
Chapter 3 – Configuring IRIS Products
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