IRS-1A - Misplaced Pages

Indian Earth observation satellite

IRS-1A
Spacecraft properties
Names	Indian Remote Sensing satellite-1A

Mission type	Earth observation
Operator	ISRO
COSPAR ID	1988-021A
SATCAT no.	18960
Website	https://www.isro.gov.in/
Mission duration	3 years (planned) 4 years (achieved)


Spacecraft	IRS-1A
Bus	IRS-1
Manufacturer	Indian Space Research Organization
Launch mass	975 kg (2,150 lb)
Dry mass	895 kg (1,973 lb)
Dimensions	1.56 m x 1.66 m x 1.10 m
Power	600 watts


Start of mission
Launch date	17 March 1988, 06:43:00 UTC
Rocket	Vostok-2M s/n L15000-79
Launch site	Baikonur Cosmodrome, Site 31
Contractor	OKB-1
Entered service	June 1988


End of mission
Deactivated	1 July 1992


Orbital parameters
Reference system	Geocentric orbit
Regime	Sun-synchronous orbit
Perigee altitude	863 km (536 mi)
Apogee altitude	917 km (570 mi)
Inclination	99.01°
Period	102.7 minutes

Instruments
Linear Imaging Self-Scanning Sensor-1 (LISS-1) Linear Imaging Self-Scanning Sensor-2 (LISS-2)
Earth observation satellites series IRS-1B →

IRS-1A, Indian Remote Sensing satellite-1A, the first of the series of indigenous state-of-art remote sensing satellites, was successfully launched into a polar Sun-synchronous orbit on 17 March 1988 from the Soviet Cosmodrome at Baikonur. IRS-1A carries two sensors, LISS-1 and LISS-2, with resolutions of 72 m (236 ft) and 36 m (118 ft) respectively with a swath width of about 140 km (87 mi) during each pass over the country. Undertaken by the Indian Space Research Organisation (ISRO). It was a part-operational, part-experimental mission to develop Indian expertise in satellite imagery.

History

The availability of Landsat imagery created a lot of interest in the science community. The Hyderabad ground station started receiving Landsat data on a regular basis in 1978. The Landsat program with its design and potentials was certainly a great model and yardstick for the IRS programme. IRS-1A was the first remote sensing mission to provide imagery for various land-based applications, such as agriculture, forestry, geology, and hydrology. The mission's long-term objective was to develop indigenous remote sensing capability.

Satellite description

The satellite bus, measuring 1.56 m x 1.66 m x 1.10 metres, had the payload module attached on the top and a deployable solar panels stowed on either side. Attitude control was provided by four-momentum wheels, two magnetic torques, and a thruster system. Together, they gave an estimated accuracy of better than ± 0.10° in all three axes.

Instruments

IRS-1A carried two "Linear Imaging Self-Scanning Sensor", LISS-1 and LISS-2, with a spatial resolution of 72 m (236 ft) and 36 m (118 ft) respectively. The three-axis-stabilised Sun-synchronous satellite carried LISS sensors which performed "push-broom" scanning in visible and near-infrared bands to acquire images of the Earth. Local equatorial crossing time (ECT) was fixed at around 10:30 of the morning.

Launch

IRS-1A was launched on 17 March 1988, at 06:43:00 UTC. It had a perigee of 863 km (536 mi), an apogee of 917 km (570 mi), an inclination of 99.01°, and an orbital period of 102.7 minutes.

Mission

IRS-1A was operated in a Sun-synchronous orbit. IRS-1A successfully completed its mission on 1 July 1992 after operating for 4 years.

References

^ "IRS-1A". World Meteorological Organization. 28 July 2015. Archived from the original on 18 May 2023. Retrieved 12 May 2021.
^ "Trajectory: IRS-1A 1988-021A". NASA. 27 April 2021. Retrieved 12 May 2021. This article incorporates text from this source, which is in the public domain.
^ "Display: IRS-1A 1988-021A". NASA. 27 April 2021. Retrieved 12 May 2021. This article incorporates text from this source, which is in the public domain.
"Indian Remote Sensing Satellite-1A". CEOS International Directory Network (IDN). Archived from the original on 3 March 2016. Retrieved 8 April 2013.
"IRS-1A (Indian Remote Sensing Satellite-1A)". ESA Earth Observation Portal. Retrieved 12 May 2021.

External links

ISRO IRS-1A link

Indian Remote Sensing (IRS) satellites

IRS-1

IRS-P

Cartosat

Completed	1 (IRS-P5) 2 2A 2B 2C 2D 2E 2F 3

Oceansat

Completed	1 (IRS-P4) 2 3

Resourcesat

Completed	1 (IRS-P6) 2 2A
Planned	Resourcesat-3

Indian spacecraft

Satellites

Communication	CMS 01 02 GSAT 1 2 3 (EDUSAT) 4 5P 6 6A 7 7A 8 9 (South Asia Satellite) 10 11 12 14 15 16 17 18 19 29 30 31 HAMSAT INSAT 1A 1B 1C 1D 2A 2B 2C 2D 2DT 2E 3A 3B 3C 3D 3DR 3DS 3E 4A 4B 4C 4CR 4E 4F 4G Planned: GSAT 20 22 23 24
Earth observation	Bhaskara I II Cartosat 1 2 2A 2B 2C 2D 2E 2F 3 EMISAT EOS 1 2 4 7 8 HySIS IMS-1 IRS 1A 1B 1C 1D 1E P1 P2 P3 Megha-Tropiques Microsat Microsat-R Oceansat 1 2 Resourcesat 1 2 RISAT 1 2 2B 2BR1 Rohini RS-D1 RS-D2 SARAL SCATSAT-1 Technology Experiment Satellite (TESS) Planned: NISAR GISAT Oceansat-3 Resourcesat-3 RISAT-1A
Experimental	APPLE Aryabhata Rohini RS-1 Rohini Technology Payload (RTP)
Navigation	IRNSS 1A 1B 1C 1D 1E 1F 1G 1I NVS-01
Student satellites	ANUSAT Jugnu SRMSAT StudSat StudSat-2 YouthSat Pratham

Space probes

Scientific	SROSS A B C C2
Astronomical	Astrosat Aditya-L1 XPoSat AstroSat-2 (planned)
Lunar programme	Chandrayaan-1 Moon Impact Probe Chandrayaan-2 Vikram Pragyan Chandrayaan-3 Vikram Pragyan Lunar Polar Exploration Mission Chandrayaan-4 Chandrayaan-5 Chandrayaan-6
Interplanetary	Mars Orbiter Mission Mars Orbiter Mission 2 (planned) Venus Orbiter Mission (planned)

Human
spaceflight

Indian Human Spaceflight Programme
- SRE-1
- SRE-II
- SRE-III
Gaganyaan
- CARE
Bharatiya Antariksha Station

Future spacecraft in italics.

v t e ← 1987 Orbital launches in 1988 1989 →
January	Kosmos 1908 Kosmos 1909, Kosmos 1910, Kosmos 1911, Kosmos 1912, Kosmos 1913, Kosmos 1914 Gorizont No.25L Progress 34 Kosmos 1915 Meteor-2 No.20
February	USA-29 Kosmos 1916 USA-30 Kosmos 1919, Kosmos 1917, Kosmos 1918 Kosmos 1920 Kosmos 1921 Sakura 3a Kosmos 1922
March	Zhongxing-1 Kosmos 1923 Kosmos 1924, Kosmos 1925, Kosmos 1926, Kosmos 1927, Kosmos 1928, Kosmos 1929, Kosmos 1930, Kosmos 1931 Molniya-1 No.65 Spacenet 3R, Telecom 1C Kosmos 1932 Kosmos 1933 IRS-1A Molniya-1 No.64 Kosmos 1934 Progress 35 Kosmos 1935 San Marco 5 Kosmos 1936 Gorizont No.26L
April	Kosmos 1937 Kosmos 1938 Foton No.4L Kosmos 1939 Transit-O 23, Transit-O 32 Kosmos 1940 Kosmos 1941
May	Ekran No.31L Kosmos 1942 Progress 36 Kosmos 1943 Intelsat VA F-13 Kosmos 1944 Kosmos 1945 Kosmos 1946, Kosmos 1947, Kosmos 1948 Molniya-3 No.49 Kosmos 1949 Kosmos 1950 Kosmos 1951
June	Soyuz TM-5 Kosmos 1952 Kosmos 1953 Meteosat 3, PAS-1, OSCAR-13 Nova 2 Kosmos 1954 Kosmos 1955 Kosmos 1956
July	Okean-O1 No.5 Kosmos 1957 Fobos 1 Unnamed Fobos 2 SROSS-B Kosmos 1958 Progress 37 Kosmos 1959 INSAT-1C, ECS-5 Meteor-3 No.3 Resurs-F1 No.30 Kosmos 1960
August	Kosmos 1961 Fanhui Shi Weixing I-02 Kosmos 1962 Molniya-1 No.66 Kosmos 1963 Gorizont No.28L Kosmos 1964 Kosmos 1965 Transit-O 25, Transit-O 31 Soyuz TM-6 Kosmos 1966
September	USA-31 USA-32 Kosmos 1967 Fengyun I-01 GStar-3, SBS-5 Kosmos 1968 Progress 38 Kosmos 1969 Kosmos 1970, Kosmos 1971, Kosmos 1972 Sakura 3b Ofek-1 Kosmos 1973 NOAA-11 Molniya-3 No.51 STS-26 (TDRS-3)
October	Kosmos 1974 Kosmos 1975 Kosmos 1976 Gran' No.34L Kosmos 1977 Kosmos 1978 TDF 1
November	USA-33 Unnamed Buran 1K1 (37KB No.3770) Kosmos 1979 Kosmos 1980 Kosmos 1981 Soyuz TM-7 Kosmos 1982
December	STS-27 (USA-34) Kosmos 1983 Ekran-M No.12L Skynet 4B, Astra 1A Kosmos 1984 Zhongxing-2 Molniya-3 No.52 Kosmos 1985 Progress 39 Molniya-1 No.63 Kosmos 1986
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).

Categories: