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- Spacecraft Brief Description The Insat 1B was the second spacecraft in the first generation Indian National Satellite System. The three-axis stabilized spacecraft, originally launched as an on-orbit backup, replaced Insat 1A, which failed in late 1982. It was positioned in a geosynchronous orbit at 74 deg E with a host of ground stations throughout India. The Insat 1B satellite, built by the Ford Aerospace and Communications Corporation, was designed to provide combined telecommunications, direct TV broadcast, and meteorological service to India's civilian community over a 7-year-in-orbit lifespan. The telecommunications package provided two-way, long-distance telephone circuits and direct radio and TV broadcasting to the remotest areas of India. The meteorology package was comprised of a scanning very-high-resolution, two-channel radiometer (VHRR) to provide full-frame, full-earth coverage every 30 min. The visual channel (0.55-0.75 micrometer) had a 2.75-km resolution while the IR channel (10.5-12.5 micrometers) had an 11-km resolution. Using the Insat TV capability, early warnings of impending disasters (i.e., floods, storms, etc.) can directly reach the civilian population, even in remote areas. The Insat 1B also had a data channel for relaying meteorological, hydrological, and oceanographic data from unattended land-based or ocean-based data collection and transmission platforms. * INSAT-1B was relegated to spare status on 17 July 1990 by the INSAT-1D. The INSAT-1B was finally removed from GEO in August 1993, after being replaced at 93.50E by INSAT-2B.* Auxiliary Information Launch Date and Time : 1983-08-31 07:49:00 Epoch Date and Time : 1983-10-15 Orbit Type : Geocentric Apogee(km) : 35680. Perigee(km) : 35680. Inclination : 0.0 Date of last update : 1998-10-07 More information about the INSAT Satellite Series is available at: "http://www.bharat-rakshak.com/SPACE/space-satellite3.html"
Group: Platform_Details Entry_ID: INSAT-1B Group: Platform_Identification Platform_Category: Earth Observation Satellites Platform_Series_or_Entity: INSAT (Indian National Satellite) Short_Name: INSAT-1B Long_Name: Indian National Satellite-1B End_Group Group: Synonymous_Platform_Names Short_Name: INSAT-1B End_Group Group: Platform_Associated_Instruments Short_Name: VHRR End_Group Group: Orbit Orbit_Inclination: 0.0 Perigee: 35680 Apogee: 35680 End_Group Creation_Date: 2007-10-05 Online_Resource: http://www.bharat-rakshak.com/SPACE/space-satellite3.html Group: Platform_Logistics Launch_Date: 1983-08-31 Primary_Sponsor: India End_Group End_Group
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