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GSAT-14
GSAT-14 is an Indian communications satellite launched in January 2014. It replaced the GSAT-3 satellite, which was launched in 2004. GSAT-14 was launched by a Geosynchronous Satellite Launch Vehicle Mk.II, which incorporated an Indian-built cryogenic engine on the third stage. Satellite GSAT-14 is part of the GSAT series of satellites. Constructed by ISRO, it is based around the I-2K satellite bus, and has a dry mass of . With fuel, its mass is . The spacecraft has a design life of 12 years. The satellite carries six Ku-band and six Extended C-band transponders to provide coverage of the whole of India. The satellite is expected to provide enhanced broadcasting services over the GSAT-3 satellite. GSAT-14 also carries two Ka-band beacons which will be used to conduct research into how weather affects Ka-band satellite communications. Fibre optic gyro, active pixel Sun sensor, round type bolometer and field programmable gate array based Earth sensors and thermal control coating ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications Satellite
A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a Transponder (satellite communications), transponder; it creates a communication channel between a source transmitter and a Radio receiver, receiver at different locations on Earth. Communications satellites are used for television, telephone, radio, internet, and military applications. Many communications satellites are in geostationary orbit above the equator, so that the satellite appears stationary at the same point in the sky; therefore the satellite dish antennas of ground stations can be aimed permanently at that spot and do not have to move to track the satellite. Others form satellite constellations in low Earth orbit, where antennas on the ground have to follow the position of the satellites and switch between satellites frequently. The radio waves used for telecommunications links travel by Line-of-sight propagation, line of sight and so are obstructe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
I-2K
I-2K is a satellite bus developed by Indian Space Research Organisation (ISRO), and marketed by Antrix Corporation. It is a standard bus for 2,000 kg class satellites; the 'I' in I-2K stands for INSAT, a group of communication satellites developed and launched by ISRO. The satellite buses developed by ISRO are specifically developed for small and medium weight satellites. I-2K spacecraft bus can supply DC power up to 3000 watts. I-2K platform is targeted towards satellites in liftoff mass in range of 1500–2500 kg. List of satellites launched using I-2K platform * INSAT series ( 3B 3C 3D 3DR 3E 4C 4CR) * IRS series ( 1C 1D P3) * GSAT series ( 1 2 3 (EDUSAT) 4 5P 6 6A 7 7A 9 14 31) * HYLAS-1 HYLAS (or HYLAS-1) is a British satellite in geostationary orbit. HYLAS, which is an acronym for ''Highly Adaptable Satellite'', is a communications satellite and was launched by the European Ariane 5 launch vehicle from the Guyana Spac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GSAT Satellites
The GSAT (Geosynchronous Satellite) satellites are India's indigenously developed communications satellites, used for digital audio, data and video broadcasting. As of 5 December 2018, 20 GSAT satellites manufactured by the Indian Space Research Organisation have been launched, out of which 14 are in service. History The GSAT series of geosynchronous satellites is a system developed by the Indian Space Research Organisation (ISRO) with an objective to make India self-reliant in broadcasting services. The system includes a total of 168 transponders (out of which 95 are leased out to provide services to broadcasters) in the C, Extended C and Ku bands, providing services to telecommunications, television broadcasting, weather forecasting, disaster warning and search and rescue operations. List of GSAT satellites This is a list of GSAT satellites and their status. See also * Polar Satellite Launch Vehicle (PSLV) * Geosynchronous Satellite Launch Vehicle (GSLV) * List o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GSAT-7
GSAT-7 or INSAT-4F is a multi-band military communications satellite developed by the Indian Space Research Organisation. The Indian Navy is the user of the multi-band communication spacecraft, which has been operational since September 2013. According to defense experts, the satellite will enable the navy to extend its blue water capabilities and stop relying on foreign satellites like Inmarsat, which provide communication services to its ships. Satellite GSAT-7, the multi-band communication satellite named ''Rukmini'' carries the payloads in UHF, C band and . It is the first dedicated military communication satellite (unlike earlier dual use satellites) built by ISRO that will provide services to the Indian Armed Forces with the main user being the Indian Navy. Its procured launch cost has been put at ₹480 crore, with the satellite costing ₹185 crore. Cost of whole project per Memorandum of Understanding with ISRO was ₹950 crores. The multiple-band spacecraft will be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GSAT-16
GSAT-16 is the 11th Indian communication satellite, meant to increase the number of transponders available for satellite-based telecommunication, television, and VSAT services in India. GSAT-16 is similar to GSAT-15 with each satellite weighing 3,150 kg and having power generation capacity of 6.8 kW. Launch Initially launch was planned for 4 December 2014, but was postponed due to inclement weather. GSAT-16 was finally launched on 6 December 2014 from the Guiana Space Centre, French Guiana, by an Ariane 5 rocket. Payload The satellite is equipped with 12 ku, 24 C and 12 Extended C band transponders. The satellite also has the highest Indian ku-beacon transmitter. Satellite GSAT-16 will be the 11th among GSAT series of Indian communication satellites, and will have estimated lifespan of 12 years. It will support civil aviation services apart from backing up the services provided by other communication satellites. The satellite is aimed as a replacement for satellite IN ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Space Research Organisation
The Indian Space Research Organisation (ISRO ) is India's national List of government space agencies, space agency, headquartered in Bengaluru, Karnataka. It serves as the principal research and development arm of the Department of Space (DoS), overseen by the Prime Minister of India, with the Chairperson of the Indian Space Research Organisation, Chairman of ISRO also serving as the chief executive of the DoS. It is primarily responsible for space-based operations, space exploration, international space cooperation and the development of related technologies. The agency maintains a constellation of Earth observation satellite, imaging, Communications satellite, communications and remote sensing satellites. It operates the GPS-aided GEO augmented navigation, GAGAN and Indian Regional Navigation Satellite System, IRNSS satellite navigation systems. It has sent Chandrayaan programme, three missions to the Moon and Mars Orbiter Mission, one mission to Mars. Formerly known as the In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
INSAT-4C
INSAT-4C was an Indian communications satellite which was lost in a launch failure in 2006. Had it reached orbit, it would have formed part of the Indian National Satellite System. Launched in 2007, it was intended to have operated in geostationary orbit at a longitude of 73.97° east. The INSAT-4CR satellite, launched in September 2007, replaced it. Built by the Indian Space Research Organisation, INSAT-4C was based upon the I-2K satellite bus. It had a dry mass of , or when fully fuelled. It was expected to have operated for ten years. The satellite carried twelve Ku band transponders, with two solar arrays to generate power. ISRO launched INSAT-4C on the second operational flight of the Geosynchronous Satellite Launch Vehicle, which was flying in the Mk.I configuration. The launch took place from the Second Launch Pad at the Satish Dhawan Space Centre Satish Dhawan Space Centre – SDSC (formerly Sriharikota Range – SHAR) is the primary spaceport of the Indian S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GSAT-4
GSAT-4, also known as HealthSat, was an experimental communication satellite, communication and navigation satellite, navigation satellite launched in April 2010 by the Indian Space Research Organisation on the maiden flight of the Geosynchronous Satellite Launch Vehicle Mk.II rocket. It failed to reach orbit after the rocket's third stage malfunctioned. The third stage was the first Indian-built Cryogenic fuel, cryogenic-fuelled upper stage, and was making its first flight. The ISRO suspects that the failure was caused by the third stage not igniting. Satellite Weighing around two tons, GSAT-4 carried a multi-channel, Ka-band, bent pipe and regenerative transponder, and a navigation payload in the C, L1, and L5 bands. Designed to guide civil and military aircraft, GSAT-4 was to have employed several new technologies such as a bus management unit, miniaturised dynamically tuned gyros, lithium-ion battery, 70 volt bus for Ka-band traveling-wave tube amplifiers, travelling-wave tube ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Standard Time
Indian Standard Time (IST), sometimes also called India Standard Time, is the time zone observed throughout the Republic of India, with a time offset of UTC+05:30. India does not observe daylight saving time or other seasonal adjustments. In military and aviation time, IST is designated E* ("Echo-Star"). It is indicated as ''Asia/Kolkata'' in the IANA time zone database. History The Indian Standard Time was adopted on 1 January 1906 during the British era with the phasing out of its precursor Madras Time (Railway Time), and after Independence in 1947, the Union government established IST as the official time for the whole country, although Kolkata and Mumbai retained their own local time (known as Calcutta Time and Bombay Time) until 1948 and 1955, respectively. The Central observatory was moved from Chennai to a location at Shankargarh Fort in Allahabad district, so that it would be as close to UTC+05:30 as possible. Daylight Saving Time (DST) was used brief ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
