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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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1

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