Panchromatic imaging. A single wide-band channel — the sensor is sensitive to radiation across a broad wavelength range.

• When that range coincides with the visible spectrum, the image resembles a black-and-white photograph.
• Advantages: high spatial resolution (no band splits), good geometric accuracy — basis of pan-sharpening workflows.
• Examples: Landsat 8/9 Band 8 (15 m pan), SPOT HRV pan (10 m), IKONOS pan (1 m).