. . . . ﺩﺩﺩﺩ ﻲﻋﺎﺑﺩ ﻲﻠﻋ ﺪﻤﳏ ﻦﺑ ﷲﺍﺪﺒﻋ ﻲﻋﺎﺑﺩ ﻲﻠﻋ ﺪﻤﳏ ﻦﺑ ﷲﺍﺪﺒﻋ ﻲﻋﺎﺑﺩ ﻲﻠﻋ ﺪﻤﳏ ﻦﺑ ﷲﺍﺪﺒﻋ ﻲﻋﺎﺑﺩ ﻲﻠﻋ ﺪﻤﳏ ﻦﺑ ﷲﺍﺪﺒﻋ
:
: .
:
: !
" # $ % & ' ( % (
)) (
* . + . ,-.-/
0' .12,3 % (
.
:
4% •
" # $ % 5 1332
(
% '
% –
"5
)%
(
% –
% (
(Colorado State University – Fort Collins ,CO– USA)
.
*78
:
"7
*78 9!
: 7 ":; '
! ":< ' ( .
" # $ % 5 ' •
13,3 ( )) & ' –
0' –
% .
*78
:
"% "7
9! *78 :
= >? @
(Spread Spectrum)
•
5 A%
($ % 13,1
( )) & ' –
0' – %
.
*78
:
"7
"%<
:
" # $ % @ •
– % –
)) & '
) 133C –
"!
.(
@ •
" # $ % –
% –
)) & '
) 13,1 –
133C .(
:
" # $ % @ %E ' F •
) 1/1, # G 1/.1
# .(
" # $ % @ " H ' F •
) 1/..
# G
1/./
# .(
" # $ % @ ! ' F •
) 1/.I # G 1/.C
# .(
% J: K @ 9 •
) 1/1, # G 1/.1
# .(
% + 0< K @ 9 •
) 1/1, # G 1/.1
# .(
% L; ' $ •
) 1/1,
# G 1/.1
# .(
' L; ' A$ •
) 1/.1 # G 1/.2
# .(
=' 8 0 M' M@ ' A$ +; 0 •
) 1/.1 # G 1/./
# .(
=' 8 0 J: 0 •
) 1/..
# G 1/.I
# .(
=' 8 =' 8 0 M% •
) 1/.I # G 1/.2
# .(
+L? J: 0 N %; 0< O >: •
) ..
/ . / 1/.C
# –
. / , / 1/.C
# .(
' F •
$
+L? J: 0 )
1/.C
# G
1427
# .(
+L? J: 0 M% •
%Q N )
I / , / 1/.C # G .R / 11 / 1/.R
# .(
: 0' ? % M% •
) ., / 11 / 1/.R
# (
.
' 5 M "8 $ ' F •
) 1/.R
# G .(
% 0) 'E M "8 ' A$ •
) 1/.R
# G .(
:
# •
.
&
. .-1 S + ' 5 @ )
1 (
# •
.
&
. .-.
S + ' 5 @ )
. (
# •
.
&
. I1.
"%<
) . (
# •
.
&
. I.1
"7 5 @
# •
.
&
. /.C
! "7<
# •
.
&
. /33 T8 U:
:
•
" # $ % ! V A .
# $ % @ A% +L? T8 =: V O >:; •
"
.
" # $ % @ ' M$ O >:; •
.
! :
9? " 0 •
A .
' A 5 ) 0 •
.
%E " "%: 0 •
.
% =! O 7 W:; @ 0 •
.
0 •
.
" : 0 •
:
"@? "
.
"! # :
• A. M. Dobaie, V. CHandrasekar, "Application of Tomographic technique for Analysis of Differential propagation Phase Measurements", 27th Conference on Radar
Meteorology, 1995.
• A. M. Dobaie, V. CHandrasekar "Polarization Diversity Measurements in Rainfall at S and C Band Frequencies: Observation of Self-Consistency",27th Conf. On Radar Met., 1995.
• Abdullah M. Dobaie, "Dual Multiparameter Radar Observation of Rainfall" ("
National Radio Science Meeting, Jan. 1995.
• Abdullah M. Dobaie, Said E. El-Khamy, "On The Designe of Channel Matched Direct-Sequence (CMDS) Spread Spectrum Signals", International Conference Signals and Systems, Al-Ain (U.A.E.), Jan. 1990.
• Abdullah M. Dobaie, Said E. El-Khamy, "On The Performance of Channel Matched Direct-Sequence (CMDS) Signals in Multipath Radio Channel", International Conference Signals and Systems, Al-Ain (U.A.E.), Jan. 1990.
• Ali M. Rushdi, M. A. Sheikh, A. M. Dobaie, " Optical fiber communications", Arab Journal of Science, Vol. 4, no. 6, pp. 79-88, July 1985.(In Arabic)……... "7
$F >E .
