Satellite and Their Specification Sumant Diwakar INDIAN REMOTE SENSING Indian Remote Sensing satellites (IRS) are a series of Earth Observation satellites, built, launched and maintained by Indian Space Research Organisation. The IRS series provides many remote sensing services to India. Indian Remote Sensing (IRS) satellite system was commissioned with the launch of IRS- 1A, in 1988. With twelve satellites in operation, IRS is the largest civilian remote sensing satellite constellation in the world providing imageries in a variety of spatial resolutions, spectral bands and swaths. The data is used for several applications covering agriculture, water resources, urban development, mineral prospecting, environment, forestry, drought and flood forecasting, ocean resources and disaster management. Following are the list of remote sensing satellite launched by ISRO:- 1) IRS-1A Launch Date: March 17, 1988 IRS-1A, the first of the series of indigenous state-of-art remote sensing satellites, was successfully launched into a polar sun- synchronous orbit on March 17, 1988 from the Soviet Cosmodrome at Baikonur. IRS-1A carries two cameras, LISS-I and LISS-II with resolutions of 73 metres and 36.25 metres respectively with a swath width of about 140 km during each pass over the country. IRS-1A Specification Mission Operational Remote Sensing Weight 975 kg Onboard power 600 Watts Communication S-band, X-band and VHF(commanding only) Stabilization Three axis body stabilized (zero momentum)
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Satellite and Their Specification
Sumant Diwakar
INDIAN REMOTE SENSING
Indian Remote Sensing satellites (IRS) are a series of Earth Observation satellites, built,
launched and maintained by Indian Space Research Organisation. The IRS series provides
many remote sensing services to India.
Indian Remote Sensing (IRS) satellite system was commissioned with the launch of IRS-
1A, in 1988. With twelve satellites in operation, IRS is the largest civilian remote sensing
satellite constellation in the world providing imageries in a variety of spatial resolutions,
spectral bands and swaths. The data is used for several applications covering agriculture,
water resources, urban development, mineral prospecting, environment, forestry,
drought and flood forecasting, ocean resources and disaster management.
Following are the list of remote sensing satellite launched by ISRO:-
1) IRS-1A Launch Date: March 17, 1988
IRS-1A, the first of the series of indigenous
state-of-art remote sensing satellites, was
successfully launched into a polar sun-
synchronous orbit on March 17, 1988 from the
Soviet Cosmodrome at Baikonur. IRS-1A carries
two cameras, LISS-I and LISS-II with resolutions of
73 metres and 36.25 metres respectively with a
swath width of about 140 km during each pass
over the country.
IRS-1A Specification
Mission Operational Remote Sensing
Weight 975 kg
Onboard power 600 Watts
Communication S-band, X-band and VHF(commanding
only)
Stabilization Three axis body stabilized (zero
momentum)
Satellite and Their Specification
Sumant Diwakar
with 4 Reactions Wheels, Magnetic
torquers
RCS
Monopropellant Hydrazine based with
sixteen
1 Newton thrusters
Payload
Three solid state Push Broom Cameras:
LISS-1(72.5 metre resolution),
LISS-2A and
LISS-2B (36.25 metre resolution)
Launch date March 17, 1988
Launch site Baikanur Cosmodrome Kazakhstan
Launch vehicle Vostok
Orbit 904 km Polar Sun-synchronous
Inclination 99.08o
Repetivity 22 days (307 orbits)
Local time 10.30 a.m. (descending node)
Mission completed
during July 1996
Satellite and Their Specification
Sumant Diwakar
2) IRS-1B Launch Date: 29.08.1991
Improved features compared to its predecessor: gyro referencing for better
orientation sensing, time tagged commanding
(IRS-1A) facility for more flexilibility in camera
operation and line count information for better
data product generation.
Mission completed on December 20, 2003 after
serving for 12 years and 4 months.
IRS-1B Specification
Mission Operational Remote Sensing
Weight 975 kg
Onboard power 600 Watts
Communication S-band, X-band and VHF (commanding only)
Stabilization
Three axis body stabilized (zero momentum)
with
4 Reactions Wheels, Magnetic torquers
RCS
Monopropellant Hydrazine based with
sixteen
1 Newton thrusters
Payload
Three solid state Push Broom Cameras LlSS-1
(72.5 metre resolution), LlSS-2A and
LlSS-2B (36.25 metre resolution)
Launch date August 29, 1991
Launch site Baikanur Cosmodrome Kazakhstan
Satellite and Their Specification
Sumant Diwakar
Launch vehicle Vostok
Orbit 904 km Polar Sun Synchronous
Inclination 99.08o
Repetivity 22 days
Local time 10.30 a.m. (descending node)
Mission Completed On December 20, 2003
3) IRS-1C Launch Date: 28.12.1995
IRS-1C is India's second generation operational Remote
Sensing Satellite. The satellite carries Payloads with
enhanced capabilities like better Spatial resolution
additional spectral band, improved repeitivity and
augment the Remote Sensing capability of the existing
IRS-1A and IRS-1B.
Mission completed on September 21, 2007 after serving
for 11 years and 8 months.
IRS-1C Specification
Mission Operational Remote Sensing
Weight 1250 kg
onboard power 809 Watts (generated by 9.6 sq.metres
Solar Panels)
Communication S-band, X-band
Stabilization Three axis body stabilized (zero momentum)
Satellite and Their Specification
Sumant Diwakar
with
4 Reaction Wheels, Magnetic torquer
RCS
Monopropellant Hydrazine based with
sixteen
1 N thrusters & one 11N thrusters
Payload
Three solid state Push Broom Cameras:
PAN (<6 metre solution )LlSS-3(23.6 metre
resolution) and WiFS (189 metre resolution)
Onboard tape recorder Storage Capacity : 62 G bits
Launch date December 28, 1995
Launch site Baikanur Cosmodrome Kazakhstan
Launch vehicle Molniya
Orbit 817 km Polar Sun-synchronous
Inclination 98.69o
Repetivity 24 days
Local time 10.30 a.m
Mission completed on September 21, 2007
4) IRS-P3 Launch Date: 21.03.1996
IRS-P3 was launched by PSLV-D3 on March 21, 1996
from SHAR Centre, Sriharikota, India. IRS-P3 carries
two remote sensing payloads - Wide Field Sensor
(WiFS) similar to that of IRS-1C, with an additional
Short Wave Infrared Band (SWIR) and a Modular
Opto-electronic Scanner (MOS). It also carries an
Satellite and Their Specification
Sumant Diwakar
X-ray astronomy payload and a C-band transponder for radar calibration.
Mission completed during January 2006 after serving 9 years and 10 months.
IRS-P3 Specification
Mission
Remote sensing of earth's natural resources. Study of X-ray
Astronomy. Periodic calibration of PSLV tracking radar
located at tracking stations.
Weight 920 kg
onboard power 817 Watts
Communication S-band
Stabilization Three axis body stabilized
RCS Combinations of bladder type and surface tension type