Indian Remote Sensing (IRS) 1A was launched in 1988, followed by 1B in 1991. Both of these sateillites carry two different imaging sensors: Linear Imaging Self Scanner (LISS) 1 and 2. These satellites have a polar, circular, sun-synchronous 904-km orbit with a 22-day repeat cycle. The LISS 1 swath width is 148 km. The satellite has two identical LISS 2 instruments with a 3-km overlap, yielding a total LISS 2 swath width of 145 km.
| Band | Wavelength Region (µm) | Resolution (m) |
| 1 | 0.45-0.52 (blue) | 73 |
| 2 | 0.52-0.59 (green) | 73 |
| 3 | 0.62-0.68 (red) | 73 |
| 4 | 0.77-0.86 (near-IR) | 73 |
| Band | Wavelength Region (µm) | Resolution (m) |
| 1 | 0.45-0.52 (blue) | 36 |
| 2 | 0.52-0.59 (green) | 36 |
| 3 | 0.62-0.68 (red) | 36 |
| 4 | 0.77-0.86 (near-IR) | 36 |
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