Kalpana-1 was the first dedicated

meteorological satellite A weather satellite or meteorological satellite is a type of Earth observation satellite that is primarily used to monitor the weather and climate of the Earth. Satellites can be polar orbiting (covering the entire Earth asynchronously), or ge ...

launched by

Indian Space Research Organisation The Indian Space Research Organisation (ISRO; ) is the national space agency of India, headquartered in Bengaluru. It operates under the Department of Space (DOS) which is directly overseen by the Prime Minister of India, while the Chairman o ...

using

Polar Satellite Launch Vehicle The Polar Satellite Launch Vehicle (PSLV) is an expendable medium-lift launch vehicle designed and operated by the Indian Space Research Organisation (ISRO). It was developed to allow India to launch its Indian Remote Sensing (IRS) satellites ...

on 12 September 2002. The satellite is three-axis stabilized and is powered by

solar panels A solar cell panel, solar electric panel, photo-voltaic (PV) module, PV panel or solar panel is an assembly of photovoltaic solar cells mounted in a (usually rectangular) frame, and a neatly organised collection of PV panels is called a photo ...

, getting up to of power. The METSAT bus was used as the basis for the Chandrayaan lunar orbiter mission of 2008.

History

Originally known as MetSat-1, the satellite was the first launched by the PSLV-C4 into the

Geostationary orbit A geostationary orbit, also referred to as a geosynchronous equatorial orbit''Geostationary orbit'' and ''Geosynchronous (equatorial) orbit'' are used somewhat interchangeably in sources. (GEO), is a circular geosynchronous orbit in altitu ...

. On February 5, 2003, it was renamed to Kalpana-1 by the

Indian Prime Minister The prime minister of India (IAST: ) is the head of government of the Republic of India. Executive authority is vested in the prime minister and their chosen Council of Ministers, despite the president of India being the nominal head of the ...

Atal Bihari Vajpayee Atal Bihari Vajpayee (; 25 December 1924 – 16 August 2018) was an Indian politician who served three terms as the 10th prime minister of India, first for a term of 13 days in 1996, then for a period of 13 months fr ...

in memory of Kalpana Chawla—an Indian born

NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeedin ...

astronaut An astronaut (from the Ancient Greek (), meaning 'star', and (), meaning 'sailor') is a person trained, equipped, and deployed by a human spaceflight program to serve as a commander or crew member aboard a spacecraft. Although generally r ...

who perished in the

disaster A disaster is a serious problem occurring over a short or long period of time that causes widespread human, material, economic or environmental loss which exceeds the ability of the affected community or society to cope using its own resources ...

. The satellite features a Very High Resolution scanning

Radiometer A radiometer or roentgenometer is a device for measuring the radiant flux (power) of electromagnetic radiation. Generally, a radiometer is an infrared radiation detector or an ultraviolet detector. Microwave radiometers operate in the microwave ...

(VHRR), for three-band images ( visible,

infrared Infrared (IR), sometimes called infrared light, is electromagnetic radiation (EMR) with wavelengths longer than those of Light, visible light. It is therefore invisible to the human eye. IR is generally understood to encompass wavelengths from ...

, and

thermal infrared Infrared (IR), sometimes called infrared light, is electromagnetic radiation (EMR) with wavelengths longer than those of visible light. It is therefore invisible to the human eye. IR is generally understood to encompass wavelengths from around ...

) with a resolution of , and a Data Relay

Transponder In telecommunications, a transponder is a device that, upon receiving a signal, emits a different signal in response. The term is a blend of ''transmitter'' and ''responder''. In air navigation or radio frequency identification, a flight trans ...

(DRT) payload to provide data to weather terrestrial platforms. Its mission were to collect data in layer of

cloud In meteorology, a cloud is an aerosol consisting of a visible mass of miniature liquid droplets, frozen crystals, or other particles suspended in the atmosphere of a planetary body or similar space. Water or various other chemicals may ...

water vapor (99.9839 °C) , - , Boiling point , , - , specific gas constant , 461.5 J/( kg·K) , - , Heat of vaporization , 2.27 MJ/kg , - , Heat capacity , 1.864 kJ/(kg·K) Water vapor, water vapour or aqueous vapor is the gaseous p ...

, and

temperature Temperature is a physical quantity that expresses quantitatively the perceptions of hotness and coldness. Temperature is measured with a thermometer. Thermometers are calibrated in various temperature scales that historically have relied o ...

of the

atmosphere An atmosphere () is a layer of gas or layers of gases that envelop a planet, and is held in place by the gravity of the planetary body. A planet retains an atmosphere when the gravity is great and the temperature of the atmosphere is low. A ...

and to establish a small satellite I-1000 bus system which can meet the exclusive service requirements of a meteorological payload for earth imageries Kalpana-1 went out of service in mid-2018.

VHRR scanning radiometer

The three band images are: * Visible * Thermal

* Water vapour infrared

References

Earth observation satellites of India Spacecraft launched in 2002 Kalpana Chawla Spacecraft launched by PSLV rockets ISRO satellites {{India-spacecraft-stub

History

VHRR scanning radiometer

See also

References