TABLE 1 Generic oceanographic radar parameters for compatibility studies System No.* Frequency band (MHz) Peak power (W) Emission BW (kHz) Sky-wave propagation Ground-wave propagation Antenna gain main lobe (dBi) P main lobe** (dBW) Antenna gain back lobe (dBi) P back lobe** (dBW) Antenna gain main lobe (dBi) P main lobe** (dBi) Antenna gain back lobe (dBi) P back lobe** (dBW) System 1 5 50 25 8 25/13 8 25/13 2 19/7 2 19/7 System 2 13 50 50 8 25/10 8 25/10 2 19/4 2 19/4 System 3 27 50 100 8 25/7 8 25/7 2 19/1 2 19/1 System 4 42 50 125 8 25/6 8 25/6 2 19/0 2 19/0 System 5 8 30 12.5 8 23/14 –6 9/0 2 17/8 –12 3/–6 System 6 12 30 50 8 23/8 –6 9/–6 2 17/2 –12 3/–12 System 7 16 30 50 8 23/8 –6 9/–6 2 17/2 –12 3/–12 System 8 25 30 75 8 23/6 –6 9/–8 2 17/0 –12 3/–14 System 9 42 30 1000 8 23/–5 –6 9/–19 2 –12 3/–25 System 10 9.2 50*** 22 6 23/11 –12 5/–7 0 17/5 –18 –1/–13 System 11 24.5 50*** 100 15 32/14 –3 14/–4 9 26/8 –9 8/–10
31 Oceanographic radar interference effects on med-short fixed service links (Fortaleza)) 32 Oceanographic radar interference effects on med-short fixed service links (Virginia Beach) 33 Oceanographic radar interference effects on med-long fixed service links (Fortaleza) 34 Oceanographic interference effects on med-long fixed service links (Virginia Beach) 35 Oceanographic radar interference effects on long fixed service links (Fortaleza) 36 Oceanographic radar interference effects on long fixed service links (Virginia Beach) Attachment 2 Calculation of the interfering time ratio for oceanographic radars in each frequency band 2-1 5 MHz (System 1, 1) At 5 MHz, the locations the path losses are lowest are: (L,G)1=( 0°E, 49.75°N) Normandy coast, France (L,G)4=(5°W, 51.5°N) Mer de la Manche (L,G)7=(0.25°W, 49.75°N) =L1 (L,G)10= (1.25°E, 49.75°N) Normandy France Therefore the location (0.5°E, 50°N) is used for these calculations. This location is in coastal Northern Normandy, France, where N20 equal to –150.4 and –151.7 dBW/Hz for “rural” and “quiet rural” respectively. For a 3 kHz bandwidth receiver, Imax is equal to –121.6 and –122.9 dBW respectively for “rural” and “quiet rural” environment. FIGURE FIGURE FIGURE FIGURE FIGURE
Man-made is −190.4 dBW/Hz for “quiet rural” environment and −175.5 dBW/Hz for “rural” environment. The galactic noise is −184.2 dBW/Hz. Figure 46 shows the cumulative histograms of the resulting external noise for the “rural” (green) and the “quiet rural” (red) environments which are quite similar for the three locations. It can be seen that whatever the location, N20 is −175 dBW/Hz and −183 dBW/Hz respectively for the “rural” and the “quiet rural” environments. 46 Cumulative histogram of external noise (dBW/Hz) at 25 MHz for 4 locations Attachment 4 Results from RECAREA sky-wave analysis worldwide Calculation results of RECAREA simulation described in § 6.5 are shown in following tables. TABLE 29 Ratio of time interference occurs for 4.5 MHz Poleward emission with oceanographic radar peak power 50 W TABLE 30 Ratio of time interference occurs for 4.5 MHz Equatorward emission with oceanographic radar peak power 50 W TABLE 31 Ratio of time interference occurs for 9 MHz Poleward emission with oceanographic radar peak power 50 W 32 Ratio of time interference occurs for 9 MHz Equatorward emission with oceanographic radar peak power 50 W