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Wide field sensor
The document summarizes the specifications of the Wide Field Sensor (WIFS) used on second generation Indian remote sensing satellites IRS-1C, IRS-1D, and IRS-P3. WIFS uses an 8 element refractive optics and has two cameras mounted with overlapping pixels. It collects data in three bands - visible (0.62-0.68 μm), near infrared (0.77-0.86 μm), and shortwave infrared (1.55-1.75 μm) - at a resolution of 188 meters and swath width of 774-804 km, with a revisit time of 5 days. This data is used to assess rabi cropped area, crop inventory, and crop phen
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Wide field sensor
- 1. Sensors and TheirSpecifications Wide Field Sensor IRS-1C, IRS-1D, IRS-P3, which are all second generation Indian remote sensing satellites,carried the WIFS sensor. The WIFS camera uses an 8 element refractive optics like in LISS-III. Two such cameras are mounted with overlapping pixels of imaging. WIFS data was used in assesment of rabi cropped area, crop inventory, observation of crop phenology etc. Band Wavelength Resolution Swath Revisit time (µm) (m) Width (days) (km) Band 1 (VIS) 0.62 to 0.68 188 774 5 Band 2 (NIR) 0.77 to 0.86 188 774 5 Band 3 1.55 to 1.75 188 804 5 (SWIR) S K Diwakar