How to acquire elevation data

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How to acquire elevation data

Things to know first

Maps

Maps are based on a matrix of up to 2000x2000 elevation records (meters above sea level), which can be saved in a file with a .MAP extension. Map data can be viewed with the Elevation grid.

Terrain Elevation Data

Digital Terrain Elevation Data (MIL-D-89020 AMENDMENT 1). Maps are based on digital terrain elevation data. The program can actually access a resolution of 1, 3, or 30 seconds of an arc, which corresponds to a spacing of approximately 30m, 100m, or 1 km between records. The program can read GTOPO30, GLOBE and DTED level 0 at 30 arcsecond, SRTM and DTED level 1 at 3 arcsecond, DTED level 2 and SRTM at 1 arcsecond, and BIL at any resolution

Interpolation

Maps are of variable dimension. Interpolation is needed to adjust the database records to those of the program.

Deployment area

The deployment area is a rectangular zone with horizontal coordinates for the centre position and a size in kilometres that should be large enough to contain all units.

 

Step by step

1. In View menu, select World map. On the world map picture, click on the desired position for the map centre position.

2. In File menu, select Map properties. This will open a form with all the necessary controls to create a map. Click on Use cursor position button.

3. Optionally use city or DMS (Latitude and longitude in degree, minute, second) to enter a more precise position for the centre of the map.

4. Select the database and associated database path. If you do not have a database, you can set SRTM parameters in Internet Preferences in Options in order to download elevation data directly from the Internet.

5. Select 400x400 pixels and 100 km size.

6. Click on the Apply button.

7. If an error message occurs, verify the database drive and redo from step 2.

8. In File menu, select New picture (See How to create a map picture).

 

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23rd January 2014