Spy Satellites are very special because some of the powerful satellites can even read the number plate on a car. The power of a spy satellite is measured by the resolution of pictures it can take. Resolution means the satellite camera’s ability to identify objects as small as 1m.
Image Source: img521.imageshack.us/img521/8741/1jilgvkgpn.jpg
- 1m resolution allows identification of buildings, vehicles.
- 2.5 resolutions allow identification of buildings, detection but not recognition of vehicles.
- 5m resolution permits recognition but not identification of buildings. It cannot detect vehicles.