When we take pictures, we talk about the resolution of the camera.
When we take satellite images, we talk about the resolution of the image itself!
Ground sample: when we project the pixels taken by the satellite onto the ground, how big would the pixels be?
https://www.youtube.com/watch?v=xy5qR0cBFGs Clouds:
- Synthetic aperture radar
Timing:
- satellite data are just snapshots
- you cannot see fast moving objects, perhaps infantry or military assets/tanks
