Transcript لزوم استفاده از ماهواره در ناوبری هوایی

Necessity of Using Satellite in
Aviation
Saeed Akbari
Expert in ATM
Email: [email protected]
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Present Situation
• Communication
• Navigation
• Surveillance
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Communication
• VHF and UHF frequencies at aerodromes
• VHF and UHF frequencies at ACC via
RCAGs
• MW line between ACC and ATS units at
aerodromes
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Problems in Communication
• No emergency frequency in ACC
• No back up frequency for ACC sectors
• Poor quality in some areas (may be due to
MW lines)
• Not possible to add more sectors in ACC
due to limited frequencies
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Navigation
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NDB
VOR
DVOR
DME
ILS
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Problems in Navigation
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Limitation of route designing
Difficult installation
Difficult maintenance
Impossible installation of ILS in some
airports
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Surveillance
• Raytheon radars comprising of two
MSSR/PSR in Mehrabad and Shiraz
• Thomson radars comprising of 10 SSR
(SINA project)
• Thales radars comprising of 5 MSSR/PSR
in Mashad, Isfahan, IKIA, Kish and
Bandarsbbas
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Problems in Surveillance
• Not full coverage
• Lack of spare parts due to sanction
especially for Raytheon radars
• Dependant technology
• Expensive
• Long time installation
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What we need?
• Good communication between aircraft and
ATS units also between ATS units
• Direct and efficient routes
• Precision landing facilities in aerodromes
• Back up for radars
• Full surveillance coverage
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