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Note for Satellite Communication System - SCS By RAVIKUMAR KUMAR

  • Satellite Communication System - SCS
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UNIT V SATELLITE APPLICATIONS INTELSAT Series : ✓INTELSAT stands for International Telecommunications Satellite. ✓The organization was created in 1964 and currently has over 140 member countries and more than 40 investing entities. ✓July 2001 INTELSAT became a private company and in May 2002 the company began providing end-to-end solutions through a network of teleports, leased fiber, and points of presence (PoPs) around the globe.

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INSAT • INSAT or the Indian National Satellite System is a series of multipurpose geo-stationary satellites launched by ISRO to satisfy the telecommunications, broadcasting, meteorology, and search and rescue operations. • Commissioned in 1983, INSAT is the largest domestic communication system in the Asia Pacific Region. • It is a joint venture of the Department of Space, Department of Telecommunications, India Meteorological Department, All India Radio and Doordarshan. The overall coordination and management of INSAT system rests with the Secretary-level INSAT Coordination Committee. • INSAT satellites provide transponders in various bands (C, S, Extended C and Ku) to serve the television and communication needs of India. Some of the satellites also have the Very High Resolution Radiometer (VHRR), CCD cameras for metrological imaging. • The satellites also incorporate transponder(s) for receiving distress alert signals for search and rescue missions in the South Asian and Indian Ocean Region, as ISRO is a member of the Cospas-Sarsat programme.

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INSAT System • The Indian National Satellite (INSAT) System Was Commissioned With The Launch Of INSAT-1B In August 1983 • INSAT-1A, The First Satellite Was Launched In April 1982 But Could Not Fulfil The Mission. • INSAT System Ushered In A Revolution In India’s Television And Radio Broadcasting, Telecommunications And Meteorological Sectors. • It Enabled The Rapid Expansion Of TV And Modern Telecommunication Facilities To Even The Remote Areas And Off-Shore Islands.

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Satellites In Service • Of The 24 Satellites Launched In The Course Of The INSAT Program, 10 Are Still In Operation. • INSAT-2 E It Is The Last Of The Five Satellites In INSAT-2 Series{Prateek }. • It Carries Seventeen C-Band And Lower Extended C-Band Transponders Providing Zonal And Global Coverage With An Effective Isotropic Radiated Power (EIRP) Of 36 Dbw. • It Also Carries A Very High Resolution Radiometer ( VHRR) With Imaging Capacity • In The Visible (0.55-0.75 µm), • Thermal Infrared (10.5-12.5 µm) And Water Vapour (5.7-7.1 µm) Channels • Provides 2x2 Km, 8x8 Km And 8x8 Km Ground Resolution Respectively.

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