Observing Systems Capability Analysis and Review Tool
Satellite Programme: Indian Remote-sensing Satellite
Series of 7 satellites for land observation, changing name starting from IRS-1 to IRS-P with IRS-1E=IRS-P1.
Follow-on of early demonstration flights Bhaskara-1 and Bhaskara-2 launched in 1979 and 1981, respectively. Main improvements: 3-axes stabilisation, sunsynchronous orbit, more instruments more performing.
After IRS-P3 the series was split as IRS-P4 = OceanSat-1, IRS-P5 = CartoSat-1, IRS-P6 = ResourceSat-1
Indian programme: ISRO responsible of development and operations.
Platforms actively stabilised over 3 axes.
Design lifetime; 3 years.
Sunsynchronous orbits around 10:30.
Replacemen policy based on launching satellites at roughly 1-year intervals.
See detailed descriptions at
Real-time downlink to the main ISRO station at Hyderabad and to a network of appointed acquisition stations in X-band.
All data concentrated to the National Remote Sensing Center (NRSC) in Hyderabad for processing and distribution (through Antrix Corporation).
1988 - 2010
Associated satellites and instruments
Note: red tag => no longer operational , green tag => operational , blue tag => planned
Indian Remote-sensing Satellite
(1988 - 1992)
(1991 - 2001)
(1995 - 2005)
(1997 - 2010)
(1993 - 1993)
(1994 - 1997)
(1996 - 2004)