IRS-P3
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IRS-P3 was a remote sensing satellite launched by ISRO on board of
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 ...
(PSLV) launch vehicle for
remote sensing Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object, in contrast to in situ or on-site observation. The term is applied especially to acquiring information about Earth ...
of
Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surfa ...
's
natural resources Natural resources are resources that are drawn from nature and used with few modifications. This includes the sources of valued characteristics such as commercial and industrial use, aesthetic value, scientific interest and cultural value. O ...
. It also hosted a scientific instrument, the Indian X-ray Astronomy Experiment (IXAE), for the study of X-ray astronomy. The IRS-P3 satellite contained an X-ray astronomy instrument, a C-band
transponder In telecommunications, a transponder is a device that, upon receiving a signal, emits a different signal in response. The term is a blend word, blend of ''transmitter'' and ''responder''. In air navigation or radio frequency identification, a T ...
and two remote sensing instruments. IRS-P3 was one of the satellite in the
Indian Remote Sensing Programme India's remote sensing program was developed with the idea of applying space technologies for the benefit of humankind and the development of the country. The program involved the development of three principal capabilities. The first was to desi ...
of
Earth observation satellite An Earth observation satellite or Earth remote sensing satellite is a satellite used or designed for Earth observation (EO) from orbit, including spy satellites and similar ones intended for non-military uses such as environmental monitoring, me ...
s, assembled, launched and maintained by Indian Space Research Organisation. There was no data recording device on board of the IRS-P3 and data was transmitted in real-time to the
ground station A ground station, Earth station, or Earth terminal is a terrestrial radio station designed for extraplanetary telecommunication with spacecraft (constituting part of the ground segment of the spacecraft system), or reception of radio waves fro ...
d in
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,
India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...
and
Neustrelitz Neustrelitz (; East Low German: ''Niegenstrelitz'') is a town in the Mecklenburgische Seenplatte district in the state of Mecklenburg-Vorpommern, Germany. It is situated on the shore of the Zierker See in the Mecklenburg Lake District. From 1738 ...
,
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.


Instruments

IRS-P3 carried two remote sensing instruments and one X-ray astronomy experiment: * Modular opto-electronic scanner (MOS), which was provided by
German Aerospace Center The German Aerospace Center (german: Deutsches Zentrum für Luft- und Raumfahrt e.V., abbreviated DLR, literally ''German Center for Air- and Space-flight'') is the national center for aerospace, energy and transportation research of Germany ...
(DLR), in the framework of a cooperative agreement between ISRO and DLR. MOS was designed for ocean remote sensing. * Indian X-ray astronomy experiment (IXAE). IXAE was to study the time variability and spectral characteristics of cosmic X-ray sources and for detection of transient X-ray sources. The experiment was developed by
ISRO Satellite Centre The U R Rao Satellite Centre (URSC), formerly ISRO Satellite Centre (ISAC) ( hi, इसरो उपग्रह केंद्र) is an Indian Space Research Organisation centre for the design, development, and construction of Indian satel ...
(URSC) and
Tata Institute of Fundamental Research Tata Institute of Fundamental Research (TIFR) is a public deemed research university located in Mumbai, India that is dedicated to basic research in mathematics and the sciences. It is a Deemed University and works under the umbrella of the D ...
(TIFR). The experiment was intended to study periodic and aperiodic intensity variation in galactic/extragalactic X-ray, spectral characteristics of various sources and properties of newly discovered X-ray transients. IXAE instruments consisted of three identical pointed mode proportional counters (PPCs) operated in the energy range 2-20
keV Kev can refer to: Given name * Kev Adams, French comedian, actor, screenwriter and film producer born Kevin Smadja in 1991 * Kevin Kev Carmody (born 1946), Indigenous Australian singer-songwriter * Kev Coghlan (born 1988), Scottish Grand Prix moto ...
, FOV of 2° x 2° and
effective area In electromagnetics and antenna theory, the aperture of an antenna is defined as "A surface, near or on an antenna, on which it is convenient to make assumptions regarding the field values for the purpose of computing fields at external points. T ...
of 1200 cm2, and an X-ray sky monitor (XSM) operating in the energy range 2-10 keV. * Wide-field sensor (WiFS) with additional Short-Wave Infrared band (SWIR). The sensor was designed for vegetation dynamic studies.


Launch

IRS-P3 was launched by the
PSLV-D3 PSLV-D3 was the overall third and second successful mission of the PSLV program by Indian Space Research Organisation. The vehicle carried IRS-P3 satellite which was deployed in the Sun-synchronous Low Earth orbit. Launch PSLV-D3 was launched at ...
launch vehicle A launch vehicle or carrier rocket is a rocket designed to carry a payload (spacecraft or satellites) from the Earth's surface to outer space. Most launch vehicles operate from a launch pad, launch pads, supported by a missile launch contro ...
on 21 March 1996, at 04:53 UTC, from
Satish Dhawan Space Centre Satish Dhawan Space Centre - SDSC (formerly Sriharikota Range - SHAR) is a rocket launch centre (spaceport) operated by Indian Space Research Organisation (ISRO). It is located in Sriharikota, Tirupati district of Andhra Pradesh. Sriharikota R ...
,
Sriharikota Sriharikota is a Barrier island off the Bay of Bengal coast located in the Shar Project settlement of Tirupati district in Andhra Pradesh, India. It houses the Satish Dhawan Space Centre, one of the two satellite launch centres in India (the o ...
, India. Periodic calibration of
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 ...
tracking radar was located at tracking stations.


Mission

The mission was completed on 15 October 2004 after serving for 8.5 years. With the consecutive successful launches of the PSLV, it was decided not to plan any more
Augmented Satellite Launch Vehicle The Augmented Satellite Launch Vehicle or Advanced Satellite Launch Vehicle, also known as ASLV, was a small-lift launch vehicle five-stage solid-fuel rocket developed by the Indian Space Research Organisation (ISRO) to place 150 kg satellite ...
(ASLV) missions.


See also

*
Indian Remote Sensing India's remote sensing program was developed with the idea of applying space technologies for the benefit of humankind and the development of the country. The program involved the development of three principal capabilities. The first was to desi ...


References


External links


ISRO IRS-P3 link
{{Orbital launches in 1996 Earth observation satellites of India Spacecraft launched in 1996 1996 in India