Likely answer edit

IKONOS key parameters — bands and radiometry.

Band Wavelength (µm) Resolution
Panchromatic 0.45 – 0.90 1 m
1 — Blue 0.45 – 0.52 4 m
2 — Green 0.52 – 0.60 4 m
3 — Red 0.63 – 0.69 4 m
4 — NIR 0.76 – 0.90 4 m
  • Pan-sharpening: the 4 m MS can be fused with the 1 m pan to yield an effective 1 m color image.
  • Radiometric resolution: 11-bit sensitivity → 2 048 grey levels. Delivered in 16-bit unsigned data format (the extra 5 bits are zero-padded).
  • Temporal resolution: ~3 days revisit at mid-latitudes via ±45° off-nadir pointing.