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SATELLITE
DR. VICENTE Y. BUENCONSEJO JR., PECE
FACULTY, COLLEGE OF ENGINEERING
COLEGIO SAN AGUSTIN - BACOLOD
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SATELLITES
natural or artificial object that revolves
CHARACTERISTICS
2
moon 1st natural satellite
Sputnik 1 1st artificial satellite
Oct. 4, 1957 - Soviet Union
All planets except mercury & venus
Saturn 18 moon
Explorer 1 Jan 31, 1958 Van Allen Belts
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TYPES OF SATELLITES
1. Communications Satellites
First tele hone and television satellite
AT&Ts Telstar 1 1962 - NASA
1st Communications Satellites
Syncom 3 1964 - US DOD Geostationary orbit
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TYPES OF SATELLITES
2. Navigation Satellites
1st Navi ation Satellite
4
Transit 1B 1960 US NAVY
Locate ships, aircrafts, automobiles
GPS (NAVSTAR) US AIR FORCE
GLONASS Russian Federation
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TYPES OF SATELLITES
3. Weather Satellites
1st Weather Satellite
5
METEOSAT 3 Europe NOAA Long-term Weather
TIROS 1960 NASA
GOES series NASA
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TYPES OF SATELLITES
4. Military Satellites
Sends encr ted data
6
Persian Gulf War (1991) Scud DMSP Global weather info
DSCS 5 spacecraft Geo
DSP Early warning missile launch
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TYPES OF SATELLITES
5. Scientific Satellites
Provide data to ma
7
Hubble Space Telescope - 1990 General Purpose Observatory
Sun, Moon, other planets
Comets, Stars & Galaxies
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SATELLITE COMMUNICATION
Provide telephone, TV & data
Rx si nals, am lifies & Tx
8
SHF 3 to 30GHz
C 6/4 GHz Ku 14/11 GHz
via microwave signal LOS space
ITU Frequency assignment
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SATELLITE COMMUNICATION
Transponder extend coverage Rx - uplink, Freq Shifter - downlink
9
Power Source Solar cell - NiCd - NiH
Tx power
Signal Strength
ower mp er -
Antenna size Narrow Beam - Disc
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SATELLITE COMMUNICATION
Satellite Launching
Boosters
10
1. 1st stage boost stage Geostationary orbit 22,300 mi
2. 2nd
stage parking stage3. 3rd stage perigee stage
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HISTORY OFCOMMUNICATION SATELLITES
SCORE 1st Comm Satellites Exp
Dec 18, 1958 13 da s elli tical
1
1
ECHO 1 Aug 12, 1960
1st Tx Live TV & Telephone - Atlantic
Telstar 1 July 10, 1962
Baloon Mylar Aluminum Coating
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HISTORY OFCOMMUNICATION SATELLITES
Syncom 2 July 26, 1963
1st geostationary Comm Satellites
1
2
yncom ug , 4
1st Commercial Comm Satellite
Intelsat I Early Bird April 6, 1965
1st Transpacific TV picture
High BW Telcom US & Europe
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HISTORY OFCOMMUNICATION SATELLITES
Intelsat II & III -1969
Full coverage Atlantic & Pacific
6,000 voice channels
Intelsat IV 1971
> 1200 voice channels
Note: All Intelsat were in US under ITSO
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ITSO
Indonesia
Canada Australia Mexico
1
4
Japan
Brazil
Arab League
E U
France
U K
Open Skies 1972 - FCC
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SPACE EXPLORATION
Comstar, Satcom & Westar - US
Anik - Canada
1
5
Symphonie France & West Germany
Molniya - Soviet
Marisat - US
Skynet Comsat UK
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WEATHER SATELLITES
TIROS 1st Weather Satellites
Global covera e 12hrs
1
6
GOES Oct 1975
GMS 1977 - Japan
24 hr US weather coverage
Meteosat 1977 - ESA
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WEATHER SATELLITES
Meteor 1969 Soviet
GEOS 1 1965 - NASA
1
7
GEOS 2 1968 - NASA
Seasat Spacecraft 1978 - 100 days
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