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6x1 Cammm
To mqienasclz:
1 P 4
lln kmmap eolwimmmr tRc useable clcvation angle is
lmdl0scml
Dis@ma oPMuanoircwss tamin docs not signifcantly
dwe lpre M.&!z Bumion of thc wtcllitc
hesatcc of vqesatitm. mcs specifically and
WKU~PP~,
in lDrr vicinity of &e tcrrccvial termid.
dwc IkE M.&Ec duration of CRC .wtcllitc
Tree coved rsw#snmimq lcrnin cxxcrbcc Itr.
e&-c8 d mes by ducing Lhc uscahk duration of
the wkzllits
Manwk. Pmnylwn;lblc and Imd-mohilc tcrminals
err aflccmf by lcrmin and mcs. hut thc airhmc
!ermidsand shiphmc tcrminals at crpcn wa are not
Jiectcd
In h yc.wnccolvecs Ihc fading might change from
log-ml shadowing IO Raylcigh to Rician a. thc
moving satcllitc comc. into view and riscs
Effect of foliage of diffcrcnt kinds and hcightc nccds
IO bc studid
7 SUMMARY & CONCLUSOONS
Eacvlnaim mglcs fa salcllitCS in 5 diffcrcnr orbit* 81
Scal Rack, WA bvc bccn elamid. Expctedly
Ilct visibility of lpcE mlcllitcs in the 5 orbits is not
identical. CIS Ma GPS clcvations anglcs arc low
md LDEe wasllika am available for shomr duration.
Molniya 24 has high clcvalion and it is visible lor n
SUMM pan or ~hc day.
Tcnain and covcwgc prediction z.,alysis has becn '
dlone by cxmtin8 lcrrain from a 3 OIC-SCC d m bacc
.wd using the Bullinpn rncthod for computing Ihc
kid. Effect of mmin on propagation loss as wcll
as the effect of raising (/lowering) thc antcnna
clevl~tion been shown.
VPerreisapaecityoPpropgation lcmsdala ingcncrd
and h g h lolisge in pyricuhr til mm wavcs.
M-lo d lo ke made (0 dctcnninc Lhc
pubability dlistribrkm of the signals. Knowlcdge
OC & BDCLi9ticq ofthe signal will aid in eclablishing
dimic f&
low.
marain lhat is neither m u s nor loo