Spatial resolution refers to the size of one pixel on the ground. Anything on the ground that is less than that size will be blended with the surrounding, that means the smaller the pixel sizes are the more details are provided.
1m resolution satellite imagery can capture details on the ground that are greater than or equal to 1m by 1m.
|Low Resolution||Medium Resolution||High Resolution / Very High Resolution|
|> 60m/pixel||10 - 30m/pixel||30cm - 5m/pixel|