George A. Hufford; Anita G. Longley; William A. Kissick,
"A Guide to the Use of the ITS Irregular Terrain Model in the Area Prediction Mode",
NTIA Technical Report TR-82-100,
April 1982
The ITS model of radio propagation for frequencies between 20 MHz and 20 GHz (the Longley–Rice model) is a general purpose model that can be applied to a large variety of engineering problems. The model, which is based on electromagnetic theory and o...