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IRS-1D

Launch Date:29.09.1997

irs1d

IRS-1D is the follow on mission to the IRS-1C, belongs to the second generation of IRS series of Satellites. It carried 3 payloads viz., PAN, LISS 3 & WiFS similar to that of IRS-1C. The satellite was launched by PSLV C1. Improvements were carried out in IRS-1D sensors taking into account the IRS – 1C experiences. The mission wsa completed during January 2010 after serving for 12 years and 3 months.

Mission Operational Remote Sensing
Orbit 817 km Polar Sun-Synchronous 740 x 817 km (Achieved)
Orbit Inclination 98.6o
Lift-off Mass 1250 kg
Orbit Period 101.35 minutes
Local Time of Equator crossing 10:30 A.M.
Repetitivity 24 days (for LISS-3) 5 days (for WiFS) 5 days (for PAN Revisit)
Payloads

Three solid state push broom cameras:

PAN: 5.8 m resolution, 70 km swath, 6 bit radiometry, 0.50 – 0.75 µm

LISS-3: 23.5 m resolution, 141 km swath, 7 bit radiometry, 4 Bands (B2: 0.52 – 0.59 µm; B3: 0.62 – 0.68 µm; B4: 0.77 – 0.86 µm, B5: 1.55 – 1.70 µm)

WiFS: 188 m resolution, 804 km swath, 7 bit radiometry, 2 Bands (Band 3: 0.62-0.68 µm; Band 4: 0.77-0.86 µm)

Attitude and Orbit Control 3-axis body stabilized with 4 reaction wheels and magnetic torquers
Power Solar Array generating 809 W backed by 2 Ni-Cd batteries of 21 AH capacities each
Launch date September 29, 1997
Launch site SHAR Centre, Sriharikota, India
Launch vehicle PSLV – C1
Mission life Three Years (Nominal)
Orbital life Completed on January 2010 after serving 12 years and 3 months.
    Site last updated: Monday 11 December 2017
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