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adjacentlink / emane

Distributed wireless network emulation framework
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pathloss formula with terrain involved #215

Closed WorksWellWithOthers closed 2 years ago

WorksWellWithOthers commented 2 years ago

I understand that the formula will be vendor/radio specific but I was wondering if there was a generic (recommended) formula to use for computing path loss with terrain involved.

Some quick searches resulted with ITU Terrain model being promising. The others Two-ray ground-reflection and Longeley-Rice model seems to require line of sight. Egli model seems to account for irregular terrain but not vegetative obstruction.

Am I naive to think that if something is obstructing two nodes (line of sight is disrupted) then the signal would be weak/dead? Can two nodes communicate if there is a mountain between two nodes?

WorksWellWithOthers commented 2 years ago

Decided to go with Longely-Rice Irregular Terrain Model.