IASI performance
Spectral resolution
The spectral resolution is expected to be within 0.35 to 0.5 cm-1 depending on wavelength.
Radiometric resolution
The radiometric resolution is expected to be within 0.25 to 0.5K.
Radiometric noise is specified in terms of the noise equivalent temperature difference (NEDT) for a given reference temperature of 280K. The NEDT requirements apply to pseudo-channels defined as an average of individual samples, having widths of 0.5 cm-1.
| Parameter | Characteristics |
|---|---|
| Scan type | Step and dwell |
| Scan rate | 8 s |
| IFOV | 3.33° |
| IFOC size at Nadir | 12 km |
| Sampling at Nadir | 25 km |
| Pixel/scan | 120 |
| Swath | ± 48.3° |
| Swath | ± 1026 km |
| Spectral range | 645 to 2760 cm-1 |
| Lifetime | 5 years |
| Power | 210 W |
| Size | 1.2 x 1.1 x 1.3 m3 |
| Mass | 236 kg |
| Data rate | 1.5 Mbps |
