Attachment Epdf_Tables_Telesat.

Epdf_Tables_Telesat.

LETTER submitted by Telesat Canada

EPDF tables

2017-04-14

This document pretains to SAT-PDR-20161115-00108 for Petition for Declaratory Ruling on a Satellite Space Stations filing.

IBFS_SATPDR2016111500108_1211384

epfd limits at the Earth’s surface for downlink transmissions Table 4 of the Petition: Minimum discrimination angle calculation for the Polar Orbits in the band 17.8-18.6 GHz Applicable Table from Article 22 of the ITU Radio Regulations TABLE 22-1B TABLE 22-4A1 TABLE 22-4B Reference GSO earth station antenna diameter [m] 1 2 5 3 10 1.8 epfd limit for the constellation [dB(w/m2/40 kHz)] -175.4 -178.4 -185.4 -182 -185 -164 epfd limit for the constellation [dB(w/m2/MHz)] -161.4 -164.4 -171.4 -168.0 -171.0 -150.0 epfd limit for each satellite (since N a = 2) [dB(w/m2/40 kHz)] -178.4 -181.4 -188.4 -185 -188 -167 epfd limit for each satellite (since N a = 2) [dB(w/m2/MHz)] -164.4 -167.4 -174.4 -171.0 -174.0 -153.0 Peak EIRP density [dB(W/Hz)] -50 -50 -50 -50 -50 -50 Peak EIRP density [dB(W/MHz)] 10 10 10 10 10 10 Minimum satellite to Earth distance [km] 1000 1000 1000 1000 1000 1000 D/λ for f=17.8 GHz 59.3 118.7 296.7 178.0 593.3 107.2 D/λ for f=18.6 GHz 62 124 310 186 620 112.0 Gr,max [dBi] using ITU-R Rec. S.1428 for f=17.8 GHz 43.2 49.9 57.8 53.4 63.9 49.0 Gr,max [dBi] using ITU-R Rec. S.1428 for f=18.6 GHz 43.5 50.3 58.2 53.8 64.2 49.4 Gr(ϕ) for f=17.8 GHz[dBi] -0.3 3.5 4.4 3.4 10.8 17.0 Gr(ϕ) for f=18.6 GHz[dBi] 0.1 3.8 4.8 3.8 11.2 17.4 ϕ [deg] for f=17.8 GHz 14.8 10.4 9.6 10.5 5.3 3.0 ϕ [deg] for f=18.6 GHz 14.3 10.1 9.3 10.2 5.1 2.9 Minimum downlink discrimination angle (ϕ) that should be met [deg] 14.8 1

epfd limits at the Earth’s surface for downlink transmissions Table 5 of the Petition: Minimum discrimination angle calculation for the Inclined Orbits in the band 17.8-18.6GHz Applicable Table from Article 22 of the ITU Radio Regulations TABLE 22-1B TABLE 22-4A1 TABLE 22-4B Reference GSO earth station antenna diameter [m] 1 2 5 3 10 1.8 epfd limit for the constellation [dB(w/m2/40 kHz)] -175.4 -178.4 -185.4 -182 -185 -164 epfd limit for the constellation [dB(w/m2/MHz)] -161.4 -164.4 -171.4 -168.0 -171.0 -150.0 epfd limit for each satellite (since N a = 2) [dB(w/m2/40 kHz)] -178.4 -181.4 -188.4 -185 -188 -167 epfd limit for each satellite (since N a = 2) [dB(w/m2/MHz)] -164.4 -167.4 -174.4 -171.0 -174.0 -153.0 Peak EIRP density [dB(W/Hz)] -50 -50 -50 -50 -50 -50 Peak EIRP density [dB(W/MHz)] 10 10 10 10 10 10 Minimum satellite to Earth distance [km] 1248 1248 1248 1248 1248 1248 D/λ for f=17.8 GHz 59.3 118.7 296.7 178.0 593.3 107.2 D/λ for f=18.6 GHz 62 124 310 186 620 112.0 Gr,max [dBi] using ITU-R Rec. S.1428 for f=17.8 GHz 43.2 49.9 57.8 53.4 63.9 49.0 Gr,max [dBi] using ITU-R Rec. S.1428 for f=18.6 GHz 43.5 50.3 58.2 53.8 64.2 49.4 Gr(ϕ) for f=17.8 GHz[dBi] 1.7 5.4 6.3 5.3 12.8 18.9 Gr(ϕ) for f=18.6 GHz[dBi] 2.0 5.8 6.7 5.7 13.1 19.3 ϕ [deg] for f=17.8 GHz 12.4 8.8 8.1 8.9 4.5 2.5 ϕ [deg] for f=18.6 GHz 12.0 8.5 7.8 8.6 4.3 2.4 Minimum downlink discrimination angle (ϕ) that should be met [deg] 12.4 2

epfd limits at the Earth’s surface for downlink transmissions Table 6 of the Petition: Minimum discrimination angle calculation for the Polar Orbits in the band 19.7-20.2 GHz Applicable Table from Article 22 of the ITU Radio Regulations TABLE 22-1C TABLE 22-4A1 TABLE 22-4B Reference GSO earth station antenna diameter [m] 0.7 0.9 2.5 5 3 10 1.6 epfd limit for the constellation [dB(w/m 2/40 kHz)] -187.4 -190.4 -196.4 -200.4 -182 -185 -157 epfd limit for the constellation [dB(w/m 2/MHz)] -173.4 -176.4 -182.4 -186.4 -168.0 -171.0 -143.0 epfd limit for each satellite (since N a = 2) [dB(w/m2/40 kHz)] -190.4 -193.4 -199.4 -203.4 -185 -188 -160 epfd limit for each satellite (since N a = 2) [dB(w/m2/MHz)] -176.4 -179.4 -185.4 -189.4 -171.0 -174.0 -146.0 Peak EIRP density [dB(W/Hz)] -56.4 -56.4 -56.4 -56.4 -56.4 -56.4 -56.4 Peak EIRP density [dB(W/MHz)] 3.6 3.6 3.6 3.6 3.6 3.6 3.6 Minimum satellite to Earth distance [km] 1000 1000 1000 1000 1000 1000 1000 D/λ for f=19.7 GHz 46.0 59.1 164.2 328.3 197.0 656.7 107.2 D/λ for f=20.2 GHz 47.1 60.6 168.3 336.7 202.0 673.3 109.9 Gr,max [dBi] using ITU-R Rec. S.1428 for f=19.7 GHz 40.9 43.1 52.7 58.7 54.3 64.7 49.0 Gr,max [dBi] using ITU-R Rec. S.1428 for f=20.2 GHz 41.2 43.3 52.9 58.9 54.5 65.0 49.2 Gr(ϕ) for f=19.7 GHz[dBi] -8.1 -8.9 -5.3 -3.3 10.7 18.1 30.4 Gr(ϕ) for f=20.2 GHz[dBi] -7.9 -8.7 -5.1 -3.1 10.9 18.3 30.6 ϕ [deg] for f=19.7 GHz 30.4 32.8 20.5 17.5 5.4 2.7 0.9 ϕ [deg] for f=20.2 GHz 29.8 32.1 20.1 17.2 5.3 2.7 0.9 Minimum downlink discrimination angle (ϕ) that should be met [deg] 32.8 3

epfd limits at the Earth’s surface for downlink transmissions Table 7 of the Petition: Minimum discrimination angle calculation for the Inclined Orbits in the band 19.7-20.2GHz Applicable Table from Article 22 of the ITU Radio Regulations TABLE 22-1C TABLE 22-4A1 TABLE 22-4B Reference GSO earth station antenna diameter [m] 0.7 0.9 2.5 5 3 10 1.6 epfd limit for the constellation [dB(w/m 2/40 kHz)] -187.4 -190.4 -196.4 -200.4 -182 -185 -157 2 epfd limit for the constellation [dB(w/m /MHz)] -173.4 -176.4 -182.4 -186.4 -168.0 -171.0 -143.0 2 epfd limit for each satellite (since N a = 2) [dB(w/m /40 kHz)] -190.4 -193.4 -199.4 -203.4 -185 -188 -160 2 epfd limit for each satellite (since N a = 2) [dB(w/m /MHz)] -176.4 -179.4 -185.4 -189.4 -171.0 -174.0 -146.0 Peak EIRP density [dB(W/Hz)] -56.4 -56.4 -56.4 -56.4 -56.4 -56.4 -56.4 Peak EIRP density [dB(W/MHz)] 3.6 3.6 3.6 3.6 3.6 3.6 3.6 Minimum satellite to Earth distance [km] 1248 1248 1248 1248 1248 1248 1248 D/λ for f=19.7 GHz 46.0 59.1 164.2 328.3 197.0 656.7 107.2 D/λ for f=20.2 GHz 47.1 60.6 168.3 336.7 202.0 673.3 109.9 Gr,max [dBi] using ITU-R Rec. S.1428 for f=19.7 GHz 40.9 43.1 52.7 58.7 54.3 64.7 49.0 Gr,max [dBi] using ITU-R Rec. S.1428 for f=20.2 GHz 41.2 43.3 52.9 58.9 54.5 65.0 49.2 Gr(ϕ) for f=19.7 GHz[dBi] -6.2 -7.0 -3.4 -1.4 12.6 20.0 32.3 Gr(ϕ) for f=20.2 GHz[dBi] -5.9 -6.8 -3.2 -1.2 12.8 20.3 32.5 ϕ [deg] for f=19.7 GHz 25.5 27.5 17.6 15.1 4.5 2.3 0.7 ϕ [deg] for f=20.2 GHz 25.0 26.9 17.4 14.9 4.4 2.2 0.7 Minimum downlink discrimination angle (ϕ) that should be met [deg] 27.5 4

epfd limit at the geostationary orbit for uplink transmissions Table 8 of the Petition: Calculation of the uplink discrimination angle needed to meet the uplink epfd limit NGSO earth station antenna diameter [m] 1 3.5 NGSO earth station antenna pattern ITU-R Rec. S.1428 ITU-R Rec. S.1428 2 epfd limit for the constellation [dB(w/m /40 kHz)] -162 -162 Maximum number of co-frequency operating NGSO earth stations visible by a GSO satellite 78 78 epfd limit for each satellite [dB(w/m2/40 kHz)] -180.9 -180.9 Minimum distance between the NGSO transmitting earth station and the GSO satellite [km] 35786 35786 Peak uplink power spectral density fed into the NGSO transmitting earth station [dB(W/Hz)] -67 -67 Peak uplink power spectral density fed into the NGSO transmitting earth station [dB(W/40 kHz)] -21.0 -21.0 D/λ for f=27.5 GHz 91.7 320.8 D/λ for f=30 GHz 100 350 Gt(θ) for f=27.5 GHz[dBi] 2.12 2.12 Gt(θ) for f=30 GHz[dBi] 2.12 2.12 θ [deg] for f=27.5 GHz 11.9 11.5 θ [deg] for f=30 GHz 11.9 11.5 Minimum uplink discrimination angle (θ) that should be met [deg] 11.9 5

epfd limit at the geostationary orbit for downlink transmissions Table 9 of the Petition: Demonstration of compliance with the ITU epfd limit at the geostationary orbit for downlink transmissions Polar Orbits Inclined Orbits Satellite peak downlink EIRP density [dB(W/Hz)] -50 -50 Satellite transmit antenna gain discrimination toward the GSO arc compared to the beam peak [dB] 15 25 Maximum satellite downlink EIRP density toward the GSO arc [dB(W/Hz)] -65 -75 Geostationary orbit to Earth distance [km] 35786 35786 NGSO to Earth distance [km] 1000 1248 Minimum distance between NGSO satellite and the geostationary orbit [km] 34786 34538 Peak power flux density generated by each satellite at the geostationary orbit under worst-case assumption [dB(W/m2/40 kHz)] -180.8 -190.7 Maximum number of satellites in Polar Orbits or Inclined Orbits visible by a GSO satellite at any given time 50 30 Peak power flux density generated by all satellites of the Polar Orbits or Inclined Orbits at the geostationary orbit under the worst-case assumption [dB(W/m2/40 kHz)] -163.81 -175.97 Peak power flux density generated by all 117 satellites at the geostationary orbit under worst- case assumption [dB(W/m2/40 kHz)] -163.55 6


Document Created: 2017-04-27 13:00:31
Document Modified: 2017-04-27 13:00:31
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