Development of the Laycock-Gott occupancy model

The authors examine mathematical modelling of occupancy for the entire high-frequency (HF) spectrum. The theory of modelling the experimental occupancy data is presented, and an example of the modelling procedures is given. Occupancy has been measured as congestion values for each International Telecommunications Union (ITU) frequency allocation across the entire HF spectrum. Congestion is defined as the fraction of signal-strength observations across each allocation for which the signal exceeds a defined threshold.