Sistem Komunikasi Satelit

5/19/2018 Sistem Komunikasi Satelit

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Sistem Komunikasi SatelitPertemuan 9

Matakuliah : H0122 / Dasar Telekomunikasi

Tahun : 2008


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2Bina Nusantara

Mahasiswa dapat mendemonstrasikankelebihan dan kerugian sistem satelitserta aplikasi satelit untuk navigasi.

LearningOutcomes


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3Bina Nusantara

Pengertian sistem satelit Komponen Sistem Orbit Satelit Aplikasi Sistem Komunikasi

Satelit GPS

Outline Materi


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4Bina Nusantara

Satellite Sstems

basestationorgatewa

!nter SatelliteLink "!SL#

Mobile$ser Link"M$L#

Gatewa

Link "G%L#

&ootprin

t

small 'ells"spotbeams#

$ser data

PS(N)ata Network GSM

G%L

M$L

PS(N* Publi' Swit'hed(elephone Network


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5Bina Nusantara

Satellite +ommuni'ation

Satellites are laun'hed and orbited &or a varieto& purposes but the most 'ommon appli'ation is'ommuni'ation.

(wo Stations on ,arth want to 'ommuni'ate butare too &ar awa to use 'onventional means-

the 'an use a satellite as a rela station.+ommuni'ation satellites are not originators o&

in&ormation but are rela stations &or earthsour'es.

(he transmitting station sends the in&ormationto the satellite "uplink#- whi'h in turnretransmits it to the re'eiving station"downlink#.

(he signal 'onverter is 'alled transponder.


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6Bina Nusantara

+lassi'ation

+overage area Global- regional- national

Servi'e tpe /i0ed servi'e satellite "/SS# Broad'ast servi'e satellite "BSS# Mobile servi'e satellite "MSS#

General usage +ommer'ial- militar- amateur-

e0perimental


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7Bina Nusantara

Satellite orbits* ,1uatorial2orbit satellite !n'lined2orbit satellite Polar2orbit satellite

/ootprint (he signal satellite &rom a satellite is aimed at a

spe'i' area

Orbits


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Bina Nusantara

Satellite 'ategories

G,O "Geosn'hronous ,arthOrbit#

M,O "Medium2,arth Orbit# L,O "Low2earth orbit#

+ategories


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Bina Nusantara

Satellite OrbitAltitudes


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Bina Nusantara

Satellite +ommuni'ations

,arl satellite 'ommuni'ations use + band in therange 3.425.6 G78

+ould inter&ere with terrestrial 'ommuni'ations Beamwidth is narrower with higher &re1uen'ies 9e'ent 'ommuni'ations make greater use o& Ku

band

Ka band is now being used.


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Bina Nusantara

Banesi!nation

"ormal #re$uen%&ran!e '(H)*

+

S

,

-

Ku

K

Ka

.

millimeter'mm*

1 2

2

8

8 12

12 18

18 2

2 0

0

110

100 3 400

/re1uen' Bands


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Bina Nusantara

Originall proposed b Arthur +. +larke. +ir'ular orbits above the e1uator- angular

separation about 6 degrees 2 allows :;< satellites. Orbital height above the earth about 3=


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Satellite 9ela Link



(ransponder

An earth station transmits in&ormation tothe satellite.

(he satellite 'ontains a re'eiver that pi'ks

up the transmitted signal- amplies it- andtranslates it on another &re1uen'.

(he signal on the new &re1uen' is thenretransmitted to the re'eiving stations ba'k

on earth. (he transmitter2re'eiver 'ombination in the

satellite is known as a transponder.



Ground Stations

(he ground station- or earth station- is theterrestrial base o& the sstem.

(he ground station 'ommuni'ates with thesatellite to 'arr out the designated mission.

(he earth station 'onsists o& ve maorsubsstems* (he antenna subsstem (he re'eive subsstem

(he transmit subsstem (he ground 'ontrol e1uipment "G+,# subsstem Power subsstem



Global Positioning Satellite "GPS# Altitude about :;.



(elah dipelaari kategori satelit. (elah dipelaari aplikasi satelit komunikasi. (elah dipelaari subsistem satelit komunikasi.

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Sistem Komunikasi Satelit