TABLE 6-13 Calculation of the number of radiosondes that are anticipated to be transmitting at the same time in view of the MSG GEOSAR Capacity Calculations 122 Synoptic radiosondes in view from Europe and Western Russia 63 Synoptic radiosondes in view from Africa 185 Synoptic radiosondes in view total 6 MHz Frequency range of sonde operation Radiosondes per MHz in view of MEO 15.41667 50% Additional non-synoptic 46.25 Total radiosondes per MHz in view of MEO 390-401 Frequency range for this sensitivity level 0.85 MHz Frequency range radiosondes in this sensitivity range 39.31 radiosondes in this sensitivity range 401-405 Frequency for this sensitivity level 4 Frequency range radiosondes in this sensitivity range 185 radiosondes in this sensitivity 405.0-405.9 Frequency range for this sensitivity level 0.95 Frequency range radiosondes in this sensitivity range 43.94 radiosondes in this sensitivity range The sensitivity levels are taken from § 6.1.3.1. The mean interference power was calculated from integration similarly to the LEO case. The results of the calculation of the percentage of the interference threshold that the anticipated number of transmitters is contributing to the MSG GEOSAR are listed in Table 6-14. 6-14 Calculation of the percentage of the interference threshold that the anticipated number of transmitters is contributing to the MSG GEOSAR MSG Mean Number of Density Threshold Percent Sensitivity Interference Bandwidth Margin simultaneous dB dB total Range Power (Hz) (dB) transmitters (W/Hz) (W/Hz) (%) (MHz) (dBW) 850 000 39.31 –182.74 –226.085 –172 –54.08 401-405 4 000 000 185.00 0.00123 –182.74 –226.085 –177 –49.08 900 000 43.94 0.00412 –182.74 –225.85 –182 –43.85 0.0057460
TABLE 6-13 Calculation of the number of radiosondes that are anticipated to be transmitting at the same time in view of the MSG GEOSAR Capacity Calculations 122 Synoptic radiosondes in view from Europe and Western Russia 63 Synoptic radiosondes in view from Africa 185 Synoptic radiosondes in view total 6 MHz Frequency range of sonde operation Radiosondes per MHz in view of MEO 15.41667 50% Additional non-synoptic 46.25 Total radiosondes per MHz in view of MEO 390-401 Frequency range for this sensitivity level 0.85 MHz Frequency range radiosondes in this sensitivity range 39.31 radiosondes in this sensitivity range 401-405 Frequency for this sensitivity level 4 Frequency range radiosondes in this sensitivity range 185 radiosondes in this sensitivity 405.0-405.9 Frequency range for this sensitivity level 0.95 Frequency range radiosondes in this sensitivity range 43.94 radiosondes in this sensitivity range The sensitivity levels are taken from § 6.1.3.1. The mean interference power was calculated from integration similarly to the LEO case. The results of the calculation of the percentage of the interference threshold that the anticipated number of transmitters is contributing to the MSG GEOSAR are listed in Table 6-14. 6-14 Calculation of the percentage of the interference threshold that the anticipated number of transmitters is contributing to the MSG GEOSAR MSG Sensitivity Range (MHz) Mean Interference Power (dBW) Bandwidth (Hz) Number of simultaneous transmitters Density dB (W/Hz) Threshold dB (W/Hz) Margin (dB) Percent total (%) –182.74 850 000 39.31 –226.085 –172 –54.08 401-405 –182.74 4 000 000 185.00 –226.085 –177 –49.08 0.00123 –182.74 900 000 43.94 –225.85 –182 –43.85 0.00412 0.0057460
R-REP-M.2359-2015-MSW-E.docx