SatcoDX - TELE-satellite International Magazine
SatcoDX - TELE-satellite International Magazine
SatcoDX - TELE-satellite International Magazine
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ﺮﻬﻈﻤﺑ C-band ﻉﻮﻧ ﻦﻣ ﺓﺮﺷﻮﺸﻟﺍ ﺾﻔﺧ ﺓﺪﺣﻭ ﻰﻣﺎﺣ ﺐﻴﻛﺮﺗ ﺪﻌﺑ ﻖﺒﻄﻟﺍ<br />
ﻞﻜﺸﻟﺍ ﻖﻴﻧﺃ<br />
ﺔﻳﻭﺍﺯ ﺱﺎﻴﻘﻣ ﻊﻣ ﻩﺎﻴﻣ ﻥﺍﺰﻴﻣ ﻡﺍﺪﺨﺘﺳﺍ ﺡﺮﺘﻘﻧ ﻭ ﻖﺒﻄﻟﺍ ﻪﻴﺟﻮﺘﻟ ﻥﺎﺣ ﺖﻗﻮﻟﺍ<br />
ﺔﻳﻭﺍﺰﻟﺍ ﻂﺒﺿ ﻞﻬﺴﻳ ﺎﻤﻣ<br />
38 <strong>TELE</strong>-<strong>satellite</strong> & Broadband — 10-11/2008 — www.<strong>TELE</strong>-<strong>satellite</strong>.com<br />
ﺎﻨﻛ ﻭ ( ﻞﺒﻴﺴﻳﺩ 12.5 ﻞﺑﺎﻘﻣ ﻞﺒﻴﺴﻳﺩ<br />
ﻖﺒﻃ ﻯﻭﺎﺴﺗ ﺓﺭﺪﻗ ﻰﻠﻋ ﻝﻮﺼﺤﻟﺍ ﻞﻣﺄﻧ<br />
ﻕﺎﺒﻃﻷﺍ ﻥﺃ ﺮﻛﺬﺗ ﻦﻜﻟ ﻭ ﻢﺳ120 ﺮﻄﻘﺑ<br />
Ku-Band ﻝﺎﺒﻘﺘﺳﻻ ﺖﺴﻴﻟ ﺔﻴﻜﺒﺸﻟﺍ<br />
ﺪﻗ ﺔﻠﺧﺍﺪﺘﻤﻟﺍ ﺕﺍﺭﺎﺷﻹﺍ ﺾﻌﺑ ﻥﺃ ﺚﻴﺣ ،<br />
. ﻝﻮﺤﻤﻟﺍ ﻰﻟﺇ ﻞﺼﺗ<br />
، ءﺍﺮﻘﻠﻟ ﻡﺎﻫ ﻉﻮﺿﻮﻤﻟﺍ ﺍﺬﻫ ﻥﺃ ﺚﻴﺣ ﻭ<br />
ﺓﺮﺷﻮﺷ ﺾﻔﺧ ﺓﺪﺣﻭ ﺔﺑﺮﺠﺘﺑ ﺎﻀﻳﺃ ﺎﻨﻤﻗ<br />
ﻰﻠﻋ ﻡﺪﺨﺘﺴﺗ ﻲﺘﻟﺍ ﻭ Ku-Band<br />
ﻖﺒﻄﻟﺍ ﻰﻠﻋ ﺓﺭﺆﺒﻟﺍ ﻁﻮﺒﻀﻣ ﺮﻴﻏ ﻖﺒﻃ<br />
ﻥﺎﻓ ﺎﻳﺮﻈﻧ ﻭ INFOSAT V055<br />
ﺓﺮﺷﻮﺸﻟﺍ ﺾﻔﺧ ﺕﺍﺪﺣﻭ ﻦﻣ ﻉﻮﻨﻟﺍ ﺍﺬﻫ<br />
ﻪﻨﻜﻤﻳ ﺍﺬﻬﻟ ﻭ ( f/D (0.6 ﻝﺪﻌﻣ ﺔﻳﺪﻟ<br />
ﺕﺪﻛﺃ ﺪﻘﻟ ﻭ ، ﻖﺒﻄﻟﺍ ﺰﻛﺮﻣ ﺔﻳﺅﺭ ﻂﻘﻓ<br />
ﺾﻔﺨﻧﺍ ﺚﻴﺣ ﺔﻳﺮﻈﻨﻟﺍ ﻩﺬﻫ ﺎﻨﺗﺎﺳﺎﻴﻗ<br />
ﺔﻧﺭﺎﻘﻤﻟﺎﺑ ﻞﺒﻴﺴﻳﺩ 1 ﻰﻟﺇ ﺓﺭﺎﺷﻹﺍ ﺓﺩﻮﺟ<br />
ﻞﻤﻌﺗ ﻲﺘﻟﺍ ﺓﺮﺷﻮﺷ ﺾﻔﺧ ﺓﺪﺣﻭ ﻊﻣ<br />
C/N = ) ﺓﺭﺆﺒﻟﺍ ﻁﻮﺒﻀﻣ ﻖﺒﻃ ﻊﻣ<br />
ﺮﻤﻗ ﻥﺎﻓ ﻝﺎﺣ ﻱﺃ ﻰﻠﻋ ﻭ ( 11 dB<br />
ﻊﻣ ﻪﻟﺎﺒﻘﺘﺳﺍ ﻦﻜﻤﻳ ﺩﺮﻴﺑ ﺕﻮﻫ ﻞﺜﻣ ﻯﻮﻗ<br />
ﺾﻔﺧ ﺕﺍﺪﺣﻭ ﻦﻣ ﺊﻃﺎﺨﻟﺍ ﻉﻮﻨﻟﺍ ﺍﺬﻫ<br />
. V055 ﻞﻳﺩﻮﻣ ﻖﺒﻄﻟﺍ ﻰﻠﻋ ﺓﺮﺷﻮﺸﻟﺍ<br />
؟ C-Band ﻝﺎﺒﻘﺘﺳﺍ<br />
ﺔﻳﺮﺋﺍﺩ ﺔﻴﺒﻄﻘﺑ<br />
ﺚﺒﺗ ﻲﺘﻟﺍ ﺭﺎﻤﻗﻷﺍ ﻦﻣ ﺪﻳﺪﻌﻟﺍ ﻙﺎﻨﻫ<br />
ﻲﺘﻟﺍ ﻭ ﺔﻳﺮﺋﺍﺪﻟﺍ ﺔﻴﺒﻄﻘﻟﺍ ﻡﺍﺪﺨﺘﺳﺎﺑ<br />
ﻦﻜﻟ ﻭ ﺎﻨﻌﻗﻮﻣ ﻰﻓ ﺎﻬﻟﺎﺒﻘﺘﺳﺍ ﻦﻜﻤﻳ<br />
ﻥﺎﻛ ﻭ ، ﻞﺒﻴﺴﻳﺩ 12 ﺭﺍﺪﻘﻤﺑ C/N<br />
ﻞﺒﻴﺴﻳﺩ 6 ﻦﻣ ﺮﺜﻛﺍ ءﺎﺿﻮﻀﻟﺍ ﺶﻣﺎﻫ<br />
: ﻮﻫ ﺮﺧﺁ ﻲﻤﻗﺭ ﺩﺩﺮﺗ ﻙﺎﻨﻫ ﻥﺎﻛ ﻭ ،<br />
ﻦﻜﻳ ﻢﻟ ﻭ ( 4040H (27500, 3/4<br />
، dBμV 84.1 ﺓﺭﺎﺷﻹﺍ ﺓﻮﻗ ، ءﻮﺳﺃ<br />
ﻞﺒﻴﺴﻳﺩ 12.6 ﺭﺍﺪﻘﻤﺑ C/N ﻝﺪﻌﻣ ﻭ<br />
، ﻞﺒﻴﺴﻳﺩ 6.3 ءﺎﺿﻮﻀﻟﺍ ﺶﻣﺎﻫ ﻭ<br />
! ﺍﺪﺟ ﺪﻴﺟ<br />
ﺔﻳﻭﺎﺴﺘﻣ ﺔﻴﻠﺛﺎﻤﺘﻟﺍ ﻞﻗﺍﻮﻨﻟﺍ ﺖﻧﺎﻛ ﺪﻗ ﻭ<br />
C/ ﻝﺪﻌﻣ ﻥﺎﻛ ﻭ ، ﺡﻮﺿﻮﻟﺍ ﻭ ﺓﻮﻘﻟﺍ ﻰﻓ<br />
ﻮﻫ ﺎﻣ ) ﺔﻴﻤﻗﺮﻟﺍ ﻞﻗﺍﻮﻨﻟﺍ ﻦﻣ ﻰﻠﻋﺃ N<br />
C/N = ﻝﺪﻌﻣ ﻊﻗﻮﺘﻧ ﺎﻨﻛ ﻭ ( ﻲﻌﻴﺒﻄﻟﺍ<br />
ﺩﺩﺮﺘﻠﻟ ﺍﺬﻫ ﺎﻧﻭﺩ ﺪﻘﻟ ﻭ ؟! ﻞﺒﻴﺴﻳﺩ 23.5<br />
ﺓﺮﻳﺰﺠﻟﺍ ﺓﺎﻨﻗ ﻥﺍ ، ( 3996H (PAL<br />
ﻰﻠﻋ ﺚﺒﺗ ﺔﻳﺰﻴﻠﺠﻧﻹﺍ ﺔﻐﻠﻟﺎﺑ ﺔﻴﻟﻭﺪﻟﺍ<br />
. ﺔﻳﻮﻘﻟﺍ ﺕﺍﺭﺎﺷﻹﺍ ﻩﺬﻫ<br />
؟ Ku-Band ﻝﺎﺒﻘﺘﺳﺍ<br />
ﺔﻴﻄﺨﻟﺍ ﺔﻴﺒﻄﻘﻟﺍ<br />
ﺔﻤﻤﺼﻣ ﺔﻴﻜﺒﺸﻟﺍ ﻕﺎﺒﻃﻷﺍ ﻥﺃ ﺚﻴﺣ<br />
ﻂﻘﻓ C-Band ﻝﺎﺒﻘﺘﺳﻻ ﺎﺳﺎﺳﺃ<br />
Ku- ﺓﺮﺷﻮﺷ ﺾﻔﺧ ﺓﺪﺣﻭ ﺎﻨﻣﺪﺨﺘﺳﺍ<br />
ﻱﺬﻟﺍ ﻭ Ku-Band ﻝﺎﺒﻘﺘﺳﻻ Band<br />
ﺔﻳﺎﻔﻜﻟﺍ ﻪﻴﻓ ﺎﻤﺑ ﺎﻳﻮﻗ ﻻﺎﺒﻘﺘﺳﺍ ﻦﻜﻳ ﻢﻟ<br />
ﺕﻮﻫ ﺮﻤﻘﻟﺍ ﻰﻠﻋ ﻞﻗﺎﻧ ﺎﻧﺮﺒﺘﺧﺍ ﺪﻘﻟ ﻭ ،<br />
ءﺍﺩﺃ ﻥﺎﻛ ﻭ ( ﻕﺮﺷ ﺔﺟﺭﺩ 13 ) ﺩﺮﻴﺑ<br />
ﺾﻔﺧ ﺓﺪﺣﻭ ﻡﺍﺪﺨﺘﺳﺍ ﻦﻣ ءﻮﺳﺃ C/N<br />
12 ) ﻢﺳ90 ﺮﻄﻘﺑ ﻖﺒﻃ ﻰﻠﻋ ﺓﺮﺷﻮﺷ<br />
ﻖﻓﻷﺍ ﻞﻔﺳﺍ ﻊﻘﺗ ﻲﺘﻟﺍ C-band ﺭﺎﻤﻗﺃ ﻝﺎﺒﻘﺘﺳﺍ ﺔﻟﻭﺎﺤﻣ : ﺔﻌﺘﻤﻟﺍ ﺕﺃﺪﺑ
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