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23-18<br />

Communication<br />

Weat her<br />

-<br />

Operational Pbase<br />

Orbit Correction<br />

Scan Phase<br />

Normal and SK-Mode<br />

Normal Mode<br />

Enlironmcntal<br />

Monitoring Re- Positioning<br />

High Rcsolution<br />

b .- .<br />

'Normal Mode<br />

Re- Positionina<br />

Tablc 2.3- I: Typical AOCS perforrnancc rcquircments<br />

Geostationary Communication Satcllitcs<br />

SMYPHONIE<br />

INrELSAT V<br />

TV-SAT 1, 2<br />

TDF 1.2<br />

TELE-X<br />

DE-KOPERNIKUS<br />

EUTE~AT t<br />

2 flight models<br />

IS flight models<br />

13 Satellites in operation.<br />

FM 9 Rr FM 14 1031 due to launchcr failure<br />

2 flight modeh<br />

FM 1: one SG failcd to deploy, dcorbited<br />

2 flight models<br />

1 flight model<br />

protoflight model<br />

FMZ FM3<br />

PFM = m1<br />

ma m3, m4, FMS.<br />

Table 3.1-1: Review of geostationary communication satellite examples<br />

Dewl. AOCS<br />

Fhf Qual.<br />

1- - 1970<br />

1976 - 1987<br />

1980 - 1987<br />

17110 - 1987<br />

1387<br />

1983 - 1989<br />

19P6 -<br />

Launch Dims<br />

A: 19.12.84.<br />

6: 27.08.72<br />

mil' : 7.1290<br />

FM2 : 24.05.81<br />

FM3 : 15.12.91<br />

FM15: 27.01.89<br />

FMl : 21.11.87<br />

FMZ : 08.08.90<br />

m1 : 28.10.88<br />

FM2 : 17.07.90<br />

FM1 : 29.03.89<br />

PFM : 05.06.89<br />

FM2 : 17.07.90<br />

FM3 : .12.10.92<br />

FMI : 31.08.90<br />

FM2 : 16.01.91<br />

FM3 : Dec.91<br />

FM4 : 10.07.92

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