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GSAT
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 ISRO, Indian Space Research Organisation have been launched, out of which 14 are in service. History The GSAT series of Geosynchronous satellite, geosynchronous satellites is a system developed by the ISRO, Indian Space Research Organisation (ISRO) with an objective to make India self-reliant in broadcasting services. The system includes a total of 168 Transponder (satellite communications), transponders (out of which 95 are leased out to provide services to broadcasters) in the C band (IEEE), C, Extended C and Ku band, 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian National Satellite System
The Indian National Satellite System or INSAT, is a series of multipurpose geostationary satellites launched by the ISRO, Indian Space Research Organisation (ISRO) to satisfy telecommunications, broadcasting, meteorology, and search and rescue operations. Commissioned in 1983, INSAT is the largest domestic communication system in the Indo-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 to serve the television and communication needs of India. Some of the satellites also have the Advanced Very High Resolution Radiometer, Very High Resolution Radiometer (VHRR), Charge-coupled device, CCD cameras for meteorology, meteorological imaging. The satellites also incorporate transponder(s) for receivin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GSAT-6A
GSAT-6A was a communication satellite launched by the Indian Space Research Organisation (ISRO). It featured a unfurlable S-band antenna similar to the one used on GSAT-6. Around 17 minutes after lift-off, the three stage GSLV Mk.II rocket flying on GSLV F08 mission successfully injected the satellite into a geosynchronous transfer orbit. Due to power failure during its orbit raising burns the communication was lost with GSAT-6A before it could reach its final circular geostationary orbit (GSO). History GSAT-6A was launched to complement GSAT-6 satellite which was launched in August 2015 by ISRO. The cost of building GSAT-6A was around ₹270 crore. GSAT-6A was to provide mobile communication services to the Indian Armed Forces. Launch GSLV-F08 carrying GSAT-6A spacecraft was launched from Second Launch Pad of Satish Dhawan Space Centre on 29 March 2018, 11:26 UTC and after flight of 17 minutes 45 seconds, placed GSAT-6A into its planned geostationary transfer orbit In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
INSAT-4E
INSAT-4E, also known as GSAT-6, is a member of the INSAT family and is a multimedia communication satellite that will offer a Satellite Digital Multimedia Broadcasting (S-DMB) service across several digital multimedia terminals or consoles which can be used to provide information services to vehicles on the fly and to the mobile phones. The satellite can be used for other social and strategic applications. Satellite INSAT-4E has five C x S transponders each of 9 MHz bandwidth and five S x C transponders each of 2.7 MHz bandwidth which will together cover the entire country. GSAT-6 uses a 0.8 meter (fixed) and one 6 meter S-Band unfurlable antenna (transmit and receive). The unfurlable antenna weighing 18 kg has CFRP truss construction with aluminium alloy joints and its parabolic gold plated molybdenum mesh is supported and shaped by cable mesh structures. The cost of GSAT-6 satellite is ₹232 crore and it is identical in configuration to GSAT-6A which was launch ... [...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] |
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] |
ISRO
The Indian Space Research Organisation (ISRO ) is India's national 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 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 imaging, communications and remote sensing satellites. It operates the GAGAN and IRNSS satellite navigation systems. It has sent three missions to the Moon and one mission to Mars. Formerly known as the Indian National Committee for Space Research (INCOSPAR), ISRO was set up in 1962 by the Government of India on the recommendation of scientist Vikram Sarabhai. It was renamed as ISRO in 1969 and was subsumed into the Department of Atomic Energy (DAE). The establi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GSAT-7A
GSAT-7A is an advanced military communications satellite meant primarily for the Indian Air Force with Indian Army using 30% of capacity. Overview GSAT-7A allows IAF to interlink different ground radar stations, ground airbase, aircraft to aircraft Real-time Control System, AEW&C aircraft such as Beriev A-50-based Phalcon and DRDO Netra. The satellite enhances network-centric warfare capabilities of the Indian Air Force and its global operations. The satellite is also used by Indian Army's Aviation Corps for real-time control and communication of its aviation operations. India is in the process of acquiring high-altitude long endurance satellite-controlled UAVs, such as American armed MQ-9B Predator drones, that can fire at enemy targets from long distances. As of December 2018, there are 320 dual use or dedicated military satellite in the sky, half of which are owned by the United States, followed by Russia, China and India (14). [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GSAT-5P
GSAT-5P, or GSAT-5 Prime, was an Indian communications satellite which was lost in a launch failure in December 2010. Part of the Indian National Satellite System, it was intended to operate in geosynchronous orbit as a replacement for INSAT-3E. Satellite GSAT-5P was a spacecraft, which was built by the Indian Space Research Organisation based on the I-2K satellite bus. ISRO also launched the satellite, and was to have been responsible for its operation. It was equipped with 36 transponders operating in the G/ H band of the NATO-defined spectrum, or the C band of the older IEEE spectrum. Twelve of the transponders operated on extended frequencies within the band. GSAT-5P was expected to operate for at least 12 years, and would have been placed at a longitude of 55 degrees east. Launch The launch of GSAT-5P used a Geosynchronous Satellite Launch Vehicle Mk.I, serial number F06, and took place from the Second Launch Pad at the Satish Dhawan Space Centre. The rocket featured s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GSAT-7C
GSAT-7C (Geosynchronous satellite 7C) is a planned Indian military communication satellite for the Indian Air Force, as part of the GSAT series. On 23 November 2021, the Defence Acquisition Council under the Defence Minister Rajnath Singh approved the Acceptance of Necessity (AoN) of the satellite project. The project is worth . The funds were allocated for the development of the satellite and ground hubs for real-time connectivity of software defined radios. Complete design, development, and launching of the satellite will be in India. It will be based on ISRO's I-2000 kg ( I-2K) Bus. The satellite will allow beyond the line of sight communications for the Indian Armed Forces to use their BNET SDRs. It's different from other GSAT military satellites because it will be dedicated to secure link software-defined radio communications only. GSAT-7, is a series of satellites developed by Indian Space Research Organisation The Indian Space Research Organisation (ISRO ) is Ind ... [...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] |
GSAT-2
GSAT-2 was an experimental communication satellite built by the Indian Space Research Organisation (ISRO) and launched on one of the first GSLVs. The satellite was positioned at 48 deg east longitude in the geo-stationary orbit. Payloads GSAT-2 carried four C-band transponders, two Ku band transponders and a Mobile Satellite Service (MSS) payload operating in S-band forward link and C-band return link. Besides the communication payloads, GSAT-2 carried the following four piggyback experimental payloads: *Total Radiation Dose Monitor (TRDM) to compare the estimated radiation doses inside the satellite with the directly measured radiation doses using a Radiation Sensitive Field Effect Transistor (RADFET) *Surface Charge Monitor (SCM) to indicate the state of the charging environment in the vicinity of the spacecraft * Solar X-ray Spectrometer (SOXS) to study the solar flare emission in 4 keV - 60 keV energy range using state of the art semiconductor devices and Phoswich Scinti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geosynchronous Satellite Launch Vehicle
Geosynchronous Satellite Launch Vehicle (GSLV) is a class of expendable launch systems operated by the ISRO, Indian Space Research Organisation (ISRO). GSLV has been used in List of GSLV launches, fifteen launches since 2001. History The Geosynchronous Satellite Launch Vehicle (GSLV) project was initiated in 1990 with the objective of acquiring an Indian launch capability for geosynchronous satellites. GSLV uses major components that are already proven in the Polar Satellite Launch Vehicle (PSLV) launch vehicles in the form of the S125/S139 solid rocket booster and the Liquid-propellant rocket, liquid-fueled Vikas (rocket engine), Vikas engine. Due to the thrust required for injecting the satellite in a geostationary transfer orbit (GTO) the third stage was to be powered by a LOX/LH2, LH2 Cryogenic engine which at that time India did not possess or have the technological expertise to build. The aerodynamic characterization research was conducted at the National Aerospace Labo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
