TABLE 3.31 Radiowave propagation prediction methods from selected ITU-R P-Series Recommendations (modified version of Table in Rec. ITU-R P.1144-6) Method Application Type Output Frequency Distance % time % location Terminal height Principle input data Rec. ITU-R Services Point-to-point Path loss 100 MHz to Not specified but 0.001 to 50 Not applicable No limits specified, Path profile data P.452 employing 50 GHz up to and beyond Average year within the surface Frequency stations on the the radio horizon and worst layer of the Percentage time surface of the month atmosphere. Tx antenna height Earth; (Not suitable for Rx antenna height interference aeronautical Latitude and longitude of Tx applications) Latitude and longitude of Rx Meteorological data Rec. ITU-R Evaluation of Point-to-area Path loss 125 MHz to 0 to 1800 km (for 1 to 95 Not applicable H1: 1.5 m to 20 km Distance P.528 basic 15.5 GHz aeronautical H2: 1 to 20 km Tx height transmission applications, Frequency Rx height losses likely to be 0 km horizontal Percentage time encountered in distance does not the aeronautical mean 0 km path services length) Rec. ITU-R Method for the Point-to-point Basic MUF 2 30 MHz Up to 40 000 km All Not applicable Not applicable Latitude and longitude of Tx − P.533 prediction of the percentages Sky-wave field Latitude and longitude of Rx performance strength Sunspot number characteristics for Available the prediction of receiver power Time(s) of day skywave Signal to noise propagation Frequency ratio Tx power LUF Tx antenna type Circuit reliability Rx antenna type Method Application Type Output Frequency Distance % time % location Terminal height Principle Input data
TABLE 3.31 Radiowave propagation prediction methods from selected ITU-R P-Series Recommendations (modified version of Table in Rec. ITU-R P.1144-6) Method Application Type Output Frequency Distance % time % location Terminal height Principle input data Rec. ITU-R P.452 Services employing stations on the surface of the Earth; interference Point-to-point Path loss 100 MHz to 50 GHz Not specified but up to and beyond the radio horizon 0.001 to 50 Average year and worst month Not applicable No limits specified, within the surface layer of the atmosphere. (Not suitable for aeronautical applications) Path profile data Frequency Percentage time Tx antenna height Rx antenna height Latitude and longitude of Tx Latitude and longitude of Rx Meteorological data Rec. ITU-R P.528 Evaluation of basic transmission losses likely to be encountered in the aeronautical services Point-to-area Path loss 125 MHz to 15.5 GHz 0 to 1800 km (for aeronautical applications, 0 km horizontal distance does not mean 0 km path length) 1 to 95 Not applicable H1: 1.5 m to 20 km H2: 1 to 20 km Distance Tx height Frequency Rx height Percentage time Rec. ITU-R P.533 Method for the prediction of the performance characteristics for the prediction of skywave propagation Point-to-point Basic MUF Sky-wave field strength Available receiver power Signal to noise ratio LUF Circuit reliability 2 − 30 MHz Up to 40 000 km All percentages Not applicable Not applicable Latitude and longitude of Tx Latitude and longitude of Rx Sunspot number Time(s) of day Frequency Tx power Tx antenna type Rx antenna type Method Application Type Output Frequency Distance % time % location Terminal height Principle Input data
R-HDB-58-2012-OAS-MSW-E.docx