WiFS

Wide Field Sensor

Satellites

IRS-P3, IRS-1C and IRS-1D

Status

Operational (on IRS-1D) – Utilised in the period: 1995 to ~ 2009

Mission

Land and vegetation observation

Instrument type

Two parallel radiometers, 2 VNIR channels on IRS-1C and IRS-1D, additional SWIR channel on IRS-P3

Scanning technique

Bushbroom, 4000 pixel/line, swath 770 km (with two instruments)

Coverage/cycle

Global coverage in 5 days, in daylight

Resolution (s.s.p.)

190 m IFOV

Resources

Mass: … kg - Power: … W - Data rate: … Mbps

Central wavelength

Spectral interval

Radiometric accuracy (SNR)

0.650 µm

0.62 - 0.68 µm

…... @ ….. % albedo

0.815 µm

0.77 - 0.86 µm

…... @ ….. % albedo

1.650 µm (on IRS-P3)

1.55 - 1.75 µm

…... @ ….. % albedo