Propagation Effects Handbook for Satellite Systems - DESCANSO ...

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Table 6.5-1. Fading Data Predominantly Due to Scintillation from
Satellites at Low Angles of Elevation
Lacstkon Seteltite
[CCIR Report 564-1, 19781
(de&at)
FedirIs dete
Unlted3Ungdom; ATS4 ; 30 GHz 6S 6.5 (dB)(peak-to-peak) Mmimumln
bhzueehem,suffolk 3.3 10 (dB)(peek+o~-k) Iurbukent windy
2A 18 (dB)(peek.toXk) } COnditiong
0.3-1.2 0ccukoneldeepf8deg of20dB
United Kingdom;
Birmfr@rn ATS6;30GHZ 1-2 Slow enhznccments and Sudden fcdec of 20 dB
USA ; Vi@nie
[Stutzmerretul,
197s]
ATS4;20GHZ
4.7:5.1
4.5
2-3dB Before zndafterllghtrekn
2-7dB Huyconditiom
8-15dB Pertly cloudy conditionr
USA ; Ohio ATS-6;2and30GHz 2.8
0.38
3dBat2GHz
15dBat30GHz
7dBst2GHz
20 dB at 30 GHz I
Mzximumeffectin
cumulus
Ctorrdr
USA; Meuecheettz lDCSP; 7 GHz 10 0.03-0.2 dB r.m.c.
3 10dB r.tn.t. wu obzerved
occesionztly in summer.
Elwation engte fluctuations of up to
O.O1° st 3’ elevation ● nd 0.002” at 10° elewion
(r.rn.t VZIuer in S+nin period).
Cenada; Eureke
I#fynd ● t al,
Anik 11; 1 Data zkmilar ● t the two frequenclet
4end6GHz Fades of 11 end 20 dB predicted for 1%
and 0.1 %of worrt month.
United ,Wngdom; Indian OceM 6.5
Goonhklly
IHerrh, 19771
SateUite,
(INTELSAT fV)
4end6GHz
3 dB (peebtoseek) exceeded fof 0.3%
of time on 4 GHz down.lin~ in a 9-month
continuous meezurementc
USA; Merykend ATS+ ; 20 end 2.5-9 1.5 dB(peak.to-peek)819* t incrca~ti
Ilppokito, 19761 30 GHz to 11 dB It 2.5° at 30 Gllz. Vatue$ at
20 GHz about 40-70%of thote at 30 GHz.
Occezionzl deep ftdes during light rein.
6-87