Bai giang TTVT

8/6/2019 Bai giang TTVT

1/49

05/23/11 1

Gii thiu d n thnh phn bQPThuc d n phng v tinh vinasat

Thng 2 - 2008

Ban QLDA thng tin vtinh


2/49

mc ch, yu cu, ph ng php

Mc ch: Gii thiu cho cn b Thng tin ton qun mt cchkhai qut v d n TTVT thnh phn BQP trong d n phng vtinh vin thng Vinasat

Yu cu: Nm c cc vn tng quan ca d n, gip ch

ng trong vic phi hp trin khai d n VINASAT mang li hiu

qu cao trong cng tc bo m TTLLPh ng php: Thuyt trnh kt hp vi Ti liu, trc tip giI pcc vn v ng mc trong qu trnh thuyt trnhThi gian trnh by: 45 pht


3/49


4/49


5/49

Tng quan v thng tin v tinh

Lch s ra iCu trc tng th ng TT V Tinhc im ca Thng tin v tinhPhn loi v tinh, qu o v tinhNhng vn chung ca TT v tinh


6/49

Lch s ra i thng tin v tinhNm 1911 pht minh truyn sng qua khng gian.Nm 1911 pht minh truyn sng qua khng gian.Nm 1945 nh bc hc Arthur C. Clarke gii thiu t ng v mt h thng thngNm 1945 nh bc hc Arthur C. Clarke gii thiu t ng v mt h thng thngtin ton cu s dng v tinh bay xung quanh qu t trong mt tp ch Anhtin ton cu s dng v tinh bay xung quanh qu t trong mt tp ch Anh

Wireless worldWireless worldNm 1957 Lin x phng thnh cng v tinh nhn to Sputnik 1Nm 1957 Lin x phng thnh cng v tinh nhn to Sputnik 1Nm 1958 M ln u tin pht bn tin chc mng Ging sinh ca tng thng MNm 1958 M ln u tin pht bn tin chc mng Ging sinh ca tng thng MEisenhower qua v tinh c tn l Score bay cao 1500 kmEisenhower qua v tinh c tn l Score bay cao 1500 km T 1960 n 1962 M lin tc phng cc v tinhT 1960 n 1962 M lin tc phng cc v tinh Echo, Curier, Telstar v RelayEcho, Curier, Telstar v Relay cao t 1500km n 8000m nh ng thi gian sng ch c vi ngy do ht ngun.

Nm 1963 M phng v tinh a tnh u tin mang tn Syncom cch trI tNm 1963 M phng v tinh a tnh u tin mang tn Syncom cch trI t36000 km v truyn c tn hiu hnh th vn hi TOKYO v M.36000 km v truyn c tn hiu hnh th vn hi TOKYO v M.Nm 1965 Lin x phng v tinh Molniya bay theo qu o elip nghing 65 soNm 1965 Lin x phng v tinh Molniya bay theo qu o elip nghing 65 sovi mt phng xch ovi mt phng xch oT thng 7/1964 t chc quc t v thng tin v tinh INTELSAT c thnh lp,T thng 7/1964 t chc quc t v thng tin v tinh INTELSAT c thnh lp,s thnh vin hin nay 134 n c v vng lnh th. TTVT pht trin mnh m vs thnh vin hin nay 134 n c v vng lnh th. TTVT pht trin mnh m vngy cng ph bin.ngy cng ph bin. .


7/49

M HNH ng thng tin v tin


8/49

c im ca tt v tinhGi thnh khng ph thuc vo c ly thng tinGi thnh khng ph thuc vo c ly thng tin

Kh nng pht qung b trn mt phm vi rt rngKh nng pht qung b trn mt phm vi rt rng

Kh nng cung cp dch v bng thng rngKh nng cung cp dch v bng thng rng

It b nh h ng bi a hnh thch hp cho vng xa xIIt b nh h ng bi a hnh thch hp cho vng xa xIho lnh nI mng c nh khng v n ti cho lnh nI mng c nh khng v n ti c

Kh nng cung cp Dch v a dng : Thoi, TruynKh nng cung cp Dch v a dng : Thoi, Truynhnh, truyn d liu, kt ni mng Internet, mng ringhnh, truyn d liu, kt ni mng Internet, mng ring


9/49

Phn loi v tinh qu o v tinh

Qu o lp Qu o trn

Cc h thng quo lp cao (HEO)

Vng ph sng t v trung bnh nv cao vi mt s

v tinh

Qu occ v nghing

Qu o thp(LEO)Qu o trung bnh(MEO)

Vng ph sng rng ton cunh ng yu cu phi c nhiu vtinh

Qu oXch o

Qu o ng b v

qu o a tnh(GEO)

Ph sng ton cu viba v tinh

Phn loi theo chc nng hoc phn loi theo qu o


10/49

Thng s v tinh a tnhChu k bay ca v tinh (1 vng) ht 1436 phtMt phng qu o v tinh trng vi mt phng xchoBn knh bay l 42164 km, cch trI t 35.786 kmVng nhn thy chim 45% b mt qu t, vng cth thng tin vi gc ngng 5 l 1/3 b mt trI t.

Thi gian tr do truyn sng t u pht n u Thu v ng c li khong 0,556 giy do vy khi thoiQua v tinh ta d dng nhn thy tr v hin t nghi m(vng).

S

BA 2

r

2

O

S

Hnh 1.11: Gc nhn t v tinh a t nh

h


11/49

a tnh

Hnh 1.12: Vtr 3 vtinh a tnh ph sng ton cu


12/49

Mt s khI nim chung v ttvtCc ph ng php a truy nhp v tinh: gm 3 ph ngphp chnh+a truy nhp phn chia theo tn s FDMA+ a truy nhp phn chia theo thi gian TDMA+ a truy nhp phn chia theo m CDMA

Cc ph ng php hn hp

- a truy nhp phn chia theo thi gian/a tn s MF/TDMA- a truy nhp phn chia theo m/a tn s MF/CDMA- a truy nhp phn chia theo pha m CPDMA- a truy nhp phn chia theo pha m/a tn s MF/CPDMA


13/49

Cc ph ng php a truy nhp VT

f

t

VSAT 1VSAT 2

VSAT 3VSAT 4

f

t

VSAT 1 VSAT 2 VSAT 3 VSAT 4

f

t

VSAT 1VSAT 2

VSAT 3VSAT 4

FDMA

TDMA

CDMA


14/49

Cc bng tn V Tinhtn s k hiu s dng in hinh

1,5 - 1,6 GHz L Dch v thng tin ding (MSS)2,0 - 2,7 - S Dch v pht thanh,

truyn hinh (BSS)3,7 - 7,25 - C Dch v v tinh c nh

(FSS)7,25 - 8,4 - X Cc v tinh chuyn dng q/s10,7 - 18 - K u Dch v v tinh c

nh (FSS)18 - 31 - K a Dch v v tinh c

nh (FSS)

44 GHz Q Cc v tinh ni vng


15/49


16/49

Phn 2

Tng quan d n phngv tinh vinasat

d h h


17/49

Tng quan v d n phng v tinh vinasat

Thng tin chungCc Thng s chnh ca VinasatCh tiu k thut v tinh Vinasat

Gii hn khai thc v tinh Vinasat

Th i h


18/49

Thng tin chungCn c vo ch th ca TT Chnh ph, t thng 12/1997 TCB cng

Ngnh khc tin hnh nghin cu tin kh thi d n

Chnh ph ph duyt u t ti Quyt nh s 1104/Q-TTg 18/10/2Tp on BCVT VN (VNPT) c giao lm ch u t, thc hin D

Nh thu Lockheed Martin Commercial Space Systems, tp on sn b quc phng v cng ngh v tr ln nht ca M trng thu d

v tinh VINASAT.V tinh VINASAT do hng Lockheed Martin (M) sn xut

Phng ln qu o bng tn la y Adrian -5 (Php).

Theo k hoch, d kin v tinh ny s c phng ln qu o cui thng 3

hocu thng 4 v bt u a vo khai thc t thng 6 nm 2008

C c th ng s chnh ca vinasat


19/49

C c thng s chnh ca vinasat Kiu v tinh: V tinh a tnh

V tr qu o: 132 ng

Trng l ng phng khong 2800 kg

S my pht p: 20 ( 08 my pht p bng

C, 12 my pht p bng Ku). Thi gian sng: 15 nm (c th n 20 nm)

02 trm iu khin ti Qu D ng v BnhD ng

Vng ph sng rng ln gm Vit Nam, ngNam , ng Trung Quc, n , Triu Tin,Nht Bn, c v Hawaii.


20/49

Mt s ch tiu KT chnh


21/49

Mt s ch tiu KT chnh2. Bng tn Ku

S b php p: 12- ng ln (Uplink):13.750 13.990 MHz (240 MHz); v14.255 14.495 MHz (240 MHz), Phn cc: Tuyn tnh V - ng xung (Downlink):10.950 11.200 MHz (250 MHz);v 11.450 11.700 MHz (250 MHz), Phn cc:Tuyn tnh H

Vng ph sng theo gin :- ng ng mc EIRP: 54dBW trong vng lnh thVit Nam v ln cn- ng ng mc G/T: 7dB/0K vi phn lnh th VitNam v ln cn.

Mt s gii hn khai th c ca Vinasat


22/49

Mt s gii hn khai thc ca Vinasati vi bng tn C m rng

- S dng ng ten c gin bc x (antenna pattern)theo khuyn ngh REC S.580-5 ca ITU-R; Mt gii hEIRP lch trc (EIRP off-axis) cho php p dng i ving ln trm mt t: EIRP off-axis - 46 + 29 25log (dBW/Hz)- ng knh ng ten thu, pht trm mt t khuyn nghs dng ti thiu l 2,4m), cng sut pht ca ng tenphi tun th cc gii hn nu trn v phi c s phihp cht ch vi cc bn lin quan trnh gy can nhiuh thng, c bit vi v tinh ln cn.

Mt s gii hn khai th c ca Vinasat


23/49

Mt s gii hn khai thc ca Vinasat i vi bng tn Ku:

- S dng ng ten c gin bc x theo khuyn nghREC S.580-5 ca ITU-R; Mt gii hn EIRP lch trc(EIRP off-axis) cho php p dng i vi ng ln trmmt t: di tn: 13.750 13.990 MHz, EIRP off-axis -46,56 + 29 25 log (dBW/Hz) ; di tn: 14.255 14.495MHz, EIRP off-axis--- - 47,56 + 29 25 log (dBW/Hz);Mt gii hn EIRP ng trc (EIRP on-axis) EIRP onaxis - 7,1 (dBW/Hz)- ng knh ti thiu ng ten pht trm mt t s dngl 1,2m.- ng knh ti thiu ng ten thu trm mt t khuynngh s dng l 0,6m)

Vng ph bng Ku


24/49

Vng ph b ng Ku

Vng ph bng C


25/49

Vng ph b ng C


26/49

c trng k thut chnh ca v tinh VINASATTi tin (Payload)

12 Ku-Band transponders 8 C-Band primary transponders Payload power - 3347 W

Cu trc (Structure & Mechanisms) LM24C A2100 Core

Program unique, VINASAT, transponder panels Dry mass 1207.86 kg Two, 85 hybrid (C & Ku-Band) DGAs

Ngun in 5080 W AE EOL solar array capability @ 15 years Two 2-panel solar array wings 4 ATJM panels with 7.5% power margin required 2 x 114 AH NiH2 batteries EPRU 1 FBA

ng c y (LM24C with A-size pressurant tank) A2100 dual mode system LEROS LAE Arcjets

iu khin trng thi (LM24C, as Available) Standard A2100 ACS components

iu khin v o c t xa (LM24C, asAvailable)

C-Band TT&C RF (Omni, 1 Rx, 2 Tx horns) 4 CMRs, 2 TLM Xmtrs 16-bit OBC 1 P/L, 2 bus RIUs

iu khin nhit -Thermal Control Standard A2100 thermal control P/L Thermal Dissipation = 2070 W

Thi gian hot ng Maneuver Life Design and Service Life - 15 years 20 year fuel life

VINASAT 1 KHI THU GN


27/49

VINASAT-1 KHI THU GN

2 TMPIN MT

TRI

2 TM PINMT TRI

ANTENNAPHATY

ANTENNA PHANG

VINASAT 1 KHI THU GN


28/49

OMNI ANTENNA

EARTH SENSORAssemblies

(ESAs)

SUN SENSORDETECTORS

(SSDs)

TT&CHORNS

EARTH PANEL

SUN SENSORDETECTORS

(SSDs)

N18376 Lockheed Martin Proprietary Data. US Export controlled Data. Authorized for export to foreign

consignees IAW DSP-5 991463. Re Export is not authorized.

VINASAT-1 KHI THU GN

VINASAT 1 KHI TRIN KHAI


29/49

VINASAT-1 KHI TRIN KHAI

PRIMARYSTRUCTURE

SOLAR ARRAY2-PACK

SOLAR ARRAY2-PACK

EAST ANTENNAREFLECTOR ASSY

WEST ANTENNAREFLECTOR ASSY

N18376 Lockheed Martin Proprietary Data. US Export controlled Data. Authorized for export to foreign

consignees IAW DSP-5 991463. Re Export is not authorized.


30/49

05/23/11 30

Phn 3Tng quan d n thng tin v tinh thnh

phn b quc phng

BQP


31/49

BQPMc tiu d n.Mc tiu d n.

Quy m d nQuy m d na im trin khaia im trin khaiGiI php cng ngh la chn cho d nGiI php cng ngh la chn cho d n

KhI qut h thng TTVTQSKhI qut h thng TTVTQSBo mt thng tin lin lc qua V tinhBo mt thng tin lin lc qua V tinhD kin k hoch trin khaiD kin k hoch trin khai

Mc tiu d n


32/49

Mc ti u d n

Mc tiu xy dng h thng Thng tin v tinh

qun s nh sau:1) Kt hp vi h thng thng tin c nh

trin khai, bo m thng tin thoi, fax,truyn s liu ch huy cc n v xa, ni

m h thng cp quang, vi ba, tng i int k thut s cha vn ti bo m c;

2) Bo m thng tin thoi, TSL, fax, THHN chocc n v lm nhim v c ng;

Quy m d n


33/49

Quy m d nD n u t xy dng mng mt t thng tin v tinh quns l mt thnh phn ca tng d n phng v tinh vinthng Vit Nam VINASAT. y l mt d n quy m qucgia, vi cc hng mc u t chnh:

Xy dng 02 trm HUB dung lng t 8 - 12 Mbps.

Xy dng mng VSAT gm trn 250 trm vi cc cu hnh:c nh, bn c nh v c ng trang b cho cc cp chindch, chin thut k c mt s loi trn tu bin Hi qun.

Xy dng v nng cp h tng ph hp

T chc v o to lc lng vn hnh, khai thc v mbo k thut lu di.


34/49

GiI php la chn cho d n


35/49

G p p a c c o d + S dng bng tn v tinh: C bng C v Ku

Bng C: trm c nh, Bng Ku: Bn C, c ng, tubin

+ S dng cng ngh chuyn mch gi IP - Thit b theo cng ngh chuyn mch knh lc hu , nhiuhng dng sn xut. Hin nay cc thit b TTVT gii tn c s(baseband) c xu hng chuyn sang s dng cng ngh IP tchhp a dch v vi chi ph r hn, cu hnh thit b n gin, d b

tr.- Cng ngh IP cho php t chc kt ni cc dch v truyn sliu, thoi, video,... ca mng TTVT vi cc mng h tng vinthng n gin, thun li hn so vi cng ngh chuyn mch knh- Cng ngh IP s gip tit kim bng thng , khng yu cu d phng cng sut (back-off) cao, do gip gim kch thc ng

ten v cng sut my pht trm mt t.- Vn bo mt thng tin c th thc hin mc lung IP ,thun li cho vic thit k ch to cc thit b bo mt (VSAT tiVSAT) ca ngnh c yu qun i vi chi ph thp.



36/49

p p

LNA

Transceiver

HPA U/C

Modem

ng ten

D/C

Ngoi tri

Voice/FaxData

Trong nh

M M u u x x

Modem M M u u x x

Modem M M u u x x

Modem/Demod

M M u u x x

LNA

Transceiver

HPA U/C

Modem

R R oout ut er er

ng ten

D/C

Ngoi tri

Voice/FaxDataEthernet

Trong nh

I P

DemodDemod

DemodDemodulat

or I P



37/49

p p + S dng a truy nhp v tinh: a truy nhpphn chia theo thi gian/ a tn s MF/TDMA

- Truy nhp v tinh theo TDMA gip tn dng ti a bng thnv tinh cho truyn dn t cc trm VSAT v HUB. iu ny gip s dng hiu qu cc bng thng my pht p v tinh..

- Hin ch to c cc thit b nh thi c chnh xc cao cho php s dng cng ngh TDMA vi gi thnh trm h hn. .

- Cc thit b HUB c cu trc gn hn so vi gii php FDMAMi b demodulator HUB s qun l nhiu kt ni t cc trm VSA(tu h thng c th ti 20-25 link/b hoc hn). Do vy cu trc trHUB theo TDMA s gn hn nhiu so vi FDMA .

- Vi dung lng mng ln ti vi trm trm v nhu cu s dng thng xuyn bin ng th s dng truy nhp MF/TDMA cho php iu hnh mng linh hot, kh nng thm trm m khng phi thu thm bng thng v tinh.

- Kh nng bo mt do tnh ngu nhin ca qutrnh c p pht tn sv bng thng.

KhI qut M hnh h thng TTVT QS


38/49

q g Q H thng gm 2 mng bng tn C v bng tn Ku, mi mngC v Ku gm c 2 trm HUB d phng phn tp a l. HUBbng C v HUB bng Ku s c t cng mt v tr gi l cnt mng v kt ni trc tip vi nhau thng qua ngtruyn cp quang mt t to thnh mng li ca h thngthng tin v tinh. T cc nt mng s c cc kt ni vi mngc nh bng lung E1 chuyn ti cc dch v thoi, sliu v truyn hnh cho mng thng tin v tinh. Khong 180 trm c nh Bng C, trn 30 trm bn c nhbng Ku, trn 40 trm c ng c nh bng Ku, trn 10 trmtu bin bng Ku, trn 10 trm c ng THHN Mng c thit k hot ng vng chc linh hot nhkh nng d phng a l ca trm HUB, khi 1 HUB b s choc thin tai hoc thi tit xu th cc trm VSAT s t

ng kt ni vi trm HUB cn li, bo m thng tin lin lckhng b gin on. H thng qun l mng c thit lp ti mi v tr trmHUB v c th hot ng c lp, ng thi mt h thngqun l tp trung cng c thit lp gim st v iuh nh to n b mn khi c n thit.

KhI qut M hnh h thng TTVT QS


39/49

q g Q

Mng

truyn

dn

mt

t

Sn Ty

ng NaiVSAT 2-C

VSAT 1-C

VSAT 2-Ku

HUB C HUB Ku

HUB KuHUB C

Cp quang

ng v tinh

Xe c ng THHN

Xe VSAT c ng

Trm bn c nh

Trm c nh

Trm trn tu bin


40/49

cc dch v h thng TTVT QS


41/49

g Q1) Dch v thoi:

Cung cp kh nng thoi quay s t ng vi giao dinAnalog hoc IP lin lc gia cc thu bao trong mngVSAT v vi mng in thoi qun s c nh. Ti mtrm VSAT s c thit b chuyn mch IP cho phpqun l ti a n 32 s thu bao. Ti mi trm HUBl chuyn mch IP vi kh nng qun l n 1024 thubao. Cc cuc gi trong n ti mt trm s khngchim bng thng v tinh m c nh tuyn ngay

ti trm. Cc cuc gi ti cc trm VSAT khc c nhtuyn ngay trong mng VSAT. Cc cuc gi ra mngngoi v gi vo mng VSAT s kt ni thng qua lungtrung k E1 ti trm HUB.2) Dch v d liu v truyn hnh: Cung cp kh nng ng dng cc dch v d liu ktni gia cc mng my tnh VLAN, kt niInternet...tt c trn nn cng ngh IP. Kt ni vimng truyn s liu qun s ATM.Cung cp kh nng truyn hnh im -im tc 2.048 Mbps gia 2 xe c ng hoc gia xe c

KhI qut M hnh 1 trm VSAT


42/49

q

Modem

BUC

LNB

Router VoIP

Voice/Fax

Ethernet

L band

Data/RS232

Ethernet Trong nh Ngoi tri

M IP

Tx

Rx

Switch

10/100Mb

ps

bo mt h thng TTVT QS


43/49

g Nguy c mt an ninh thng tin

+ Cc i chn thu, khai thc thng tin c tnh nngcao, t trn t i phng;+ i pht nhiu c nh, t trn t i phnghoc gn bin gii hay trn tu bin, gy nhiu chothng theo ng uplink;+ My bay mang my pht nhiu ng uplink v

downlink, c th thm nhp vo vng ph sng ca tinh.

Gii php bo mt thng tin v tinh+ Bo mt giao din v tinh

+ Bo mt thng tin u cui u cui+ Cng ngh bo mt da trn IP

Nguy c mt an ninh TT v tinh


44/49

V tinh thng tin

Chim ot k nh lnh

My pht nhiu ng ln trn my bay

My pht nhiu ngxung trn my bay

Lc lng ch tn cng v tinhLc lng mt t iu khinv tinh

My pht nhiu b mt cnh

Chn thu/thm d

Tn cng vo khu vc mtt

bo mt giao din v tinh


45/49

VSAT 1 - C VSAT 1 - KuL 614 , Sn Ty

MH 1

HUB C HUBKu

Cp quang ng v tinh

Xe VSAT truyn hnh

Xe VSAT c ng

Trmb n c nh

Trmc nhTrmtrn tu bin

MV

MH 2

MV

MV

MV

Trmbo mt C yu

MV

MV

MV

TSLQS

VSAT 2 - C VSAT 2 - KuA98 TP .HCM

MH 3

HUB C HUB Ku

MV

MH 4

MV

MV

MV

MV

MV

MV


46/49


47/49


48/49

Tng kt


49/49

05/23/11 49

Tng kt

S l c Th no l TT v tinh? Thng tin tng quan v Vinasat.

Thng tin tng quan v d n

thng tin v tinh thnh phn BQuc phng

Bai giang TTVT

Documents

Transcript of Bai giang TTVT