1、EUTELSAT, TERMINALS AND ANTENNA APPROVAL Thomas Lohrey October 2016 A KEY PLAYER IN THE SPACE BUSINESS 2 Satellites for global coverage 39 Solid investment programme satellites to launch 4 Revenues 1.48 billion SERVICES SUPPORTING DIGITAL GROWTH Situation at 30 June 2015 GOVERNMENT SERVICES Civil se
2、curity Connectivity for the military Disaster recovery 14% VIDEO APPLICATIONS Direct-to-Home reception Feeding headends Newsgathering 63% DATA AND BROADBAND Connecting telecom networks Consumer, enterprise and government broadband In-flight and maritime connectivity 23% 3 EUROPE KA-SAT broadband sat
3、ellite pioneer in Europe AFRICA 2019: standalone High Throughput Satellite RUSSIA Broadband payload on EUTELSAT 36C LATAM Broadband payload on EUTELSAT 65 West A ASIA EUTELSAT 172B to launch in 2017 for in-flight connectivity 4 EFFICIENT BANDWIDTH ADAPTED TO REGIONAL BROADBAND NEEDS CASE STUDY AFRIC
4、AN BANK The principal contribution to service interruption, customer dissatisfaction and loss of revenue. Operator Error 80-85% of cases Equipment faults 10-15% of cases Deliberate Jammers Less than 5% of cases normally politically. (high profile gets the media attention). Deliberate Pirating - tran
5、smitting for free less than 1% of cases Interference The impact GSM DEMODULATION 7 VSAT equipment failure responsible in majority of cases Broken cable, rotten connectors, non-terminated combiner inputs - GSM stations inject beacons and traffic channels into the L-Band IF band - Signals are upconver
6、ted and transmitted in RF to the satellite - VSAT BUCs upconvert L-Band IF between 900 and 1500 MHz towards satellites GSM base stations transmit between 850 and 960 MHz Our GSM demodulation tool a EUTELSAT development: - Identification of Country ID, Network ID and Cell ID - Geolocalisation of the
7、GSM BTS possible - VSAT identification must be close to this GSM BTS - Cooperation with VSAT system operator - Possibility of ordered shutdown by regulator authority ADJACENT SATELLITE INTERFERENCE 8 Examples FIELDS OF INTEREST 9 Terminal Hardware + Installation Satellite operator Service provider N
8、etwork operator Hot Line usage Service investor Business plan Interference Maximum usable Throughput Link Efficiency Bit/Hz per terminal No. of terminals In space capacity WELCOME TO EUTELSAT EARTH STATION APPROVAL 10 Full document can be downloaded http:/ Eutelsat specification: document EESS 502 -
9、 Eutelsat approval process document: ESOG 120 Reasons why Eutelsat insists in a Earth station approval are as follows: Reduction of cross polar interference Reduction of adjacent satellite interference Assurance of network efficiency (efficient use of space segment) Ensure reliable terminal operatio
10、n even on difficult ambient conditions Customer benefits Confidence in certified antenna quality. Required in many tenders. Accepted by most other satellite operators. Easy and fast Eutelsat terminal line up. WHAT IS EUTELSAT EARTH STATION APPROVAL 11 THE APPROVAL TEST PROCESS 12 Information about a
11、ntenna to approve Checkout information, - preparation of approval process Range test Stability test Pointing test Antenna meet specification ? Verification of reasons consulting = improvement Provision of Approval certification and LOGO NO YES Gain and pattern of antenna at output of OMT/TX rej. fil
12、ter Examples of range test adapters The test adapter shall allow direct access to the output of the OMT without any electronic components. RANGE TEST ADAPTER 13 For satellite orbit separation 1.5, 2.5, 3 Calculate max overshoot in range 1 - 1.5; 1.5 - 2; 2 - 2.5; 2.5 - 3; 3 - 9; 9 - 20 PRESENTATION
13、OF RANGE TEST RESULTS 14 ANTENNA COPOL GAIN MASK FCC 25.209 VERSUS EUTELSAT =0 1 or 100/D 7 9.2 48 180 D = Antenna diameter in line with Geostationary orbit 29-25log dBi 8dBi 32-25log dBi -10 dBi 10% overshoots maximum 3 dB Copol antenna gain in all planes 10% overshoots maximum 6 dB FCC =0 1.5 7 9.
14、2 48 85 180 29-25log dBi No overshoots 8dBi 32-25log dBi -10 dBi 0 dBi 10% overshoots maximum 3 dB In Ku- and Ka- band In the plane of the geostationary orbit =0 3 48 85 180 32-25log dBi -10 dBi 10% overshoots maximum 6 dB In Ku- and Ka- band In all other directions 0 dBi Eutelsat FCC EXAMPLES OF OR
15、BITAL PLANES EXAMPLES OF RASTER SCANS 120 CM KA BAND ANTENNA 17 POINTING ACCURACY TEST SET UP 18 Process 1. Point to test satellite nominal procedure 2. Mark laser point on white board 3. Set up clean carrier 4. Check clean carrier with reference st. 5. Optimize pointing with clean carrier 6. Mark L
16、aser point on white board 7. Verify difference between laser points and calculate deviation. Deivation must be Table value Antenna OK 5. Table with the minimum force values for On Axis, Pitch and Yaw force Developed by TU Munich based on wind tunnel tests LOGOS 20 All Logos are Trademark protected F
17、or further information on classical earth station antennas contact: E on VSAT and broadband service antennas contact Thomas Lohrey: on mobile (COTM) antennas contact Eros Feltrin: Full ESOG 120 document download : http:/ VSAT Innovation & Development INSTALLATION APPS /KA-SAT pointer for Tooway can
18、be adapted to DTH and other VSAT /Entire installation and activation /Secured E-mail with GPS data for installation management /Patent pending Utilisation of one satellite position on Ku and Ka band Enhancing the utilisation bandwith of a terminal by 50% First mass market capable Dichroic sub-reflector ever (patent pending) TRIPLE PLAY - DICHROIC SUB-REFLECTOR ReflectorK - / K a- bandFeed (TRIA )additional K u- band FeedKA KU BAND DSR FOR TOOWAY Requirement: TV reception from 9 East and 7 East with Tooway terminals (triple play) EUTELSAT, TERMINALS AND ANTENNA APPROVAL Sept. 2016
