How to perform visual coverage

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How to perform visual coverage

Things to know first

Applicability

Visual coverage can be used for line of sight, radar or interception range. It is based on pure geometrical clearance, taking into account the sensor height above ground, the target height above ground (nap of the earth flight), the topography, and the earth curvature.

Earth radius

Visual coverage uses the average earth radius to simulate earth curvature. This explains the difference observed with the radio coverage, where the radio beam tends to bend toward ground.

Step by step

1. Create a grey slope picture map (see How to create a map picture).

2. Position the centre unit (see How to position units).

3. In Tools menu select Visual coverage.

4. Select appropriate centre unit, sensor height and target height.

5. Set radial range from 0 to 100 km, azimuth range from 0 deg. to 360 deg. at 1 deg. step.

6. Press the Yellow button.

23rd January 2014