Table 2. Spatial resolution required for identification by observation targets [1]

Observation target Min. resolution for recognition [m] Min. resolution for details [m]
Military airfield 9 4.5
Loading dock 15 6
Aerodrome facilities 4.5 3
Submarine 6 1.5
Fishing boat 4.5 1.5
Bridge 4.5 0.9
Aircraft 1.5 0.9
Radar facility 0.9 0.9
Air defense camp 1.5 0.3
Truck 1.5 0.6
Tent 1 0.6