|Spectral Bands (microns)||
B3 0.62 - 0.68
B4 0.77 - 0.86
B5 1.55 - 1.69
B3 and B4 188x188
|Quantisation bits||7 (128 grey levels|
|Swath||810 Km.||No. of detectors||
2048 x 2 for B3
2048 x 2 for B4
2100 x 2 for B5
IRS-P3 WiFS is slightly different from IRS-1C WiFS. In IRS-P3 WiFS, another band (B5) in the middle infrared region is added for monitoring plant canopy water content.
The sensor system is primarily meant for ocean related studies. It operates in narrow spectral bands in visible, near infrared and short wave infra-red regions (SWIR) of the electromagnetc spectrum and consists of three optical modules namely MOS-A, MOS-B and MOS-C. Further the sensor should be able to detect small changes in spectral signature. This is achieved by having 16 bits of quantisation as against 7 or 8 bits in the sensors used for land applications.
|Spectral range||0.755 - 0.768||0.408 - 1.010||1.50 - 1.70|
|No. of Bands||4||13(*)||1|
|Resolution (m)||1569 x 1395||523 x 523||523 x 644|
|No. of detectors||140||384||299|
(*) Each band with 0.001 micrometers band-width.