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1 Coordination of Earth Stations with respect to terrestrial stations / other earth stations
2 Process for E/S Coordination Frequency Study Article 5 : Frequency Allocation Article 9: Understanding Coordination Provisions Sending Information Appendix 7: Copy of Coordination Diagram Appendix 4: Coordination data (AP4/III) Coordination & Notification Coordination under 9.15 / 9.17 / 9.17A / 9.21 Send Notification data (AP4 captured by SpaceCap) 2
3 Process for E/S Coordination Frequency Study Article 5 : Frequency Allocation Article 9: Understanding Coordination Provisions Sending Information Appendix 7: Copy of Coordination Diagram Appendix 4: Coordination data (AP4/III) Coordination & Notification Coordination under 9.15 / 9.17 / 9.17A / 9.21 Send Notification data (AP4 captured by SpaceCap) 3
4 Frequency Allocations for Earth Station Frequency Study Volume No.1 Article 5 Region MHz FIXED FIXED-SATELLITE (Earth-to-space) equal rights Space = Terrestrial All Regions MHz FIXED-SATELLITE (Earth-to-space) (space-to-earth) opposite direction Uplink Downlink 4
5 Frequency Study 5
6 Volume No.1 Article 9 Frequency Study 9.6 Administrations shall effect coordination notifying to the BR or brings into use any frequency assignment. before A 6
7 Volume No.1 Article 9 Frequency Study 9.15 Coordination of a Specific or Typical Earth Station of non-gso in respect of Terrestrial Stations (associated with Footnote A) Footnote 9.11A Adm B Adm A 7
8 Volume No.1 Article Coordination of any Specific Earth Station or Typical Mobile Earth Station in frequency bands above 100 MHz, in respect of Terrestrial Stations, with the exception of the coordination under 9.15 Frequency Study Adm A Adm B Adm A Adm B 8
9 Volume No.1 Article 9 Frequency Study 9.17A Coordination of any Specific Earth Station in respect of other Earth Stations operating in the opposite direction of transmission (ODT), or any Typical Mobile Earth Station in respect of Specific Earth Station (ODT) *Rx E/S No methodology in AP7 Adm A Adm B 9
10 Volume No.1 Article 9 Frequency Study 9.21 Specific Earth Station of a service required to seek agreement of other administrations (under Footnotes) rare case for Earth Station Space Service under No agreement (ex: footnote MSS) 10
11 Coordination of Earth Station is ADM s duty and responsibility. GSO Satellites Frequency Study Non-GSO Satellites Interference 9.17A Transmitting Earth Station 9.15/ /9.17 Terrestrial Receiving Earth Station
12 Process for E/S Coordination Frequency Study Article 5 : Frequency Allocation Article 9: Understanding Coordination Provisions Sending Information Appendix 7: Copy of Coordination Diagram Appendix 4: Coordination data (AP4/III) Coordination & Notification Coordination under 9.15 / 9.17 / 9.17A / 9.21 Send Notification data (AP4 captured by SpaceCap) 12
13 Preparation of Coordination Data Sending Information Collecting AP4 data AP7 Capture (BR Software) SpaceCap (BR Software) Capture data (.MDB) GIBC/AP7 (BR Software) Where is BR Software? Coordination Area/ADM Coordination Request BR IFC (Space Services) - International Frequency Information Circular or R/go/space-software/en 13
14 Volume No.2 Appendix 4 Coordination data Sending Information Annex 2 GEOGRAPHICAL DATA SATELLITE ANTENNA SIGNAL CHARACTERISTICS Others Longitude / Latitude Altitude Orbital Location, Identification (Geo, Non-Geo) Maximum gain Radiation pattern Power Maximum Power Density Frequencies Noise temperature Emission Type Horizontal Elevation Angle 14
15 AP4 data - AP7 Capture (Exercise Purpose) Sending Information * * * The associated Space Station should be notified and the beam should be matched. 15
16 AP4 data - SpaceCap (for Coordination & Notification) Sending Information 16 16
17 Computer Program for Determination of Coordination Area Sending Information AP7 embedded in GIBC (from BR IFIC DVD) C:\BR_SOFT\BATCH Create your Input File Magic button for Coordination? 17
18 Volume No.2 Appendix 7 Sending Information Anomalous (short-term) Interference Propagation mechanisms Elevated layer reflection/refraction (h < x 100m) Common Volume at the intersection of the antenna main beams Hydrometeor scatter Tropospheric scatter (>100km) Ducting (>500km) Diffraction (local) Great-circle propagation (Mode 1) 4 Radio-Clim. zone + Hydrometeor scatter (Mode 2) 15 Rain zone A-Q 18
19 L(%)=P t +G e +G x Gx, Pr(%) from Tables of AP7 P r (%) convert to Max ( Great-circle propagation Hydrometeor scatter (Mode 1), (Mode 2) ) (Mode1) L(%)=P t +G x Gx, Pr(%) from Tables of AP7 P r (%) (Mode2) Hydrometeor scatter G X P t *G e (10 to 123 Km/f) Minimum Coordination Distance Maximum Calculation Distance (369/ Mode2 up to 1200 Km/ Mode1*Zone C) 19
20 Report (p1) of AP7 (GIBC) program 9.17 Sending Information ex: Rcv GSO ES (FSS) w.r.t. Terrestrial St (TS, FS, MS) Freq: GHz Sat longitude : 18 W Horizon Ele. Anagle : 0 Affected countries: Countries included in Coordination Distance/Area Automatic indication in AP7 report 20
21 Coordination area of 9.17A (Opposite direction) ex: Tx GSO ES (FSS) with respect to Rcv GSO ES (EESS) Sending Information Freq: GHz Sat longitude : 1 W Horizon Ele. Anagle : 0 Affected countries: I TUN 21
22 Predetermined Coordination distance 9.15 (Table 10 of Appendix 7) Sending Information Predetermined AP7 Table 10 (Example Adm: KOR) Typical, 100Km Typical, 400Km Typical, 500Km Typical, 580Km 125E 130E 120E 125E 130E 135E 115E 120E 125E 130E 135E 140E 115E 120E 125E 130E 135E 140E 40N 40N 45N 45N KRE 40N KRE 40N 40N KRE 40N 40N KRE 40N KOR KOR KOR J KOR J 35N 35N 35N 35N 35N 35N 35N 35N J CHN CHN J 30N 30N 30N 30N 30N 30N 125E 130E 120E 125E 130E 135E 120E 125E 130E 135E 120E 125E 130E 135E Typical, 1000Km Typical, 1080Km Specific, 100Km Specific, 580Km 105E 110E 115E 120E 125E 130E 135E 140E 145E 150E 105E 110E 115E 120E 125E 130E 135E 140E 145E 150E 40N 125E 130E 40N 120E 125E 130E 135E 45N 45N 45N 45N KRE 40N 40N 40N 40N 40N KRE 40N KRE KRE 35N KOR J 35N 35N KOR J 35N KOR 30N CHN 30N 30N CHN 30N KOR 35N 35N 25N 25N 25N 25N J MACHKG 115E 120E 125E 130E 135E 140E 20N MACHKG 115E 120E 125E 130E 135E 140E 20N 125E 130E 120E 125E 130E 22
23 Report (p2) of AP7 (GIBC) program Sending Information Tech. parameters of the planning E/S Calculated parameters by 5 Azimuth Coordination distance by 5 Azimuth ( 0-355º ) To: Probably Affected ADMs (9.29/31) Send AP4/III Coord. Data Send Copy of Cood. Contour 23
24 Process for E/S Coordination Frequency Study Article 5 : Frequency Allocation Article 9: Understanding Coordination Provisions Sending Information Appendix 7: Copy of Coordination Diagram Appendix 4: Coordination data (AP4/III) Coordination & Notification Coordination under 9.15 / 9.17 / 9.17A / 9.21 Send Notification data (AP4 captured by SpaceCap) 24
25 APPENDIX 7 Definition of the Coordination Area Coordination & Notification E F SUI D I 0 SVK AUT HNG SVN HRV BIH YUG MKD ALB GRC MLT ROU BUL TUR 45 Coordination contours with the greatest coordination distance However It represents a regulatory concept based on Worst Cases & 90 Conservative Assumptions. ALG TUN EGY i.e. It s not an exclusion zone. 225 Mode(1) Mode(2) 180 LBY means More 135 detailed calculations and discussions need to be performed. 25
26 Horizontal Elevation Angles All Azimuths around Earth Station Ant. if no values between Average value No values default 0 degree Azimuth x5 o. Azimuth x4 o. Azimuth x2 o. Azimuth x o Coordination & Notification. Azimuth x 3 o. Azimuth x1 o HE Angle 4 HE Angle HE 5 Horizon Angle 2 Elevation HE Angle 3 HE Angle 1 Earth station 26
27 Effect of Horizon Elevation Angle Coordination & Notification RECEIVING EARTH STATION COORDINATION AREAS MAGHTAB MLT/MLT 014E N MHZ E F SUI I D AUT SVN SVK HNG ROU HRV BIH YUG BUL MKD MDA UKR E F SUI D I SVK AUT HNG SVN HRV BIH YUG MKD ROU BUL ALB GRC TUR ALB GRC TUR MLT MLT TUN TUN ALG ALG EGY EGY LBY LBY Reduced Coordination Area HORIZON ELEVATION ANGLE : 0 o HORIZON ELEVATION ANGLE: Actual Value 27
28 More practical consideration with Auxiliary Contour Coordination & Notification AP7 embedded in GIBC Auxiliary Contour Extra coordination lines inside main contour It s all Complementary information. 28
29 Auxiliary Contour - Mode 1 (& 2) Appendix 7 - Annex 6 Coordination & Notification Extra coordination lines inside main contour (decided between ADMs) Adm B Coordination contour (Gx=50 dbi) Adm A - 5 db Auxiliary contour (Gx = 45 dbi) - 10 db Auxiliary contour (Gx = - 40 dbw) 29
30 Actions on Coordination Request (Article 9) Coordination & Notification 4 Months A Coordination Req. (9.29/9.31) Administration A Ack. of receipt (9.45) Req. additional Info (9.54) if Agreement (9.51A) Send Notification (11.2) if Disagreement (9.51A/9.52) Adm B s assignment ** Suggestion for resolution Administration B Technical Exam (9.50) Collect existing/planning system Inside Coordination Contours Notify Adm B s system (9.52B, 11.2/11.9) Notify Adm B s system (9.52, 11.2/11.9) ITU Assistance Req. - No reply/decision from Adm B (9.33/9.46/9.60)
31 3 Things (Planning Adm A) on Coordination of Earth Station 1. Define Affected ADM (AP7) 2. Send Request (AP4 & AP7) 3. Coordinate (with mutual cooperation) 31
32 3 Things (Requested Adm B) on Coordination of Earth Station 1. Acknowledge the reception 2. Coordinate (with mutual cooperation) 3. Give an early decision 32
33 Question? WRS Answer 33
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