A range and bearing-finding system is disclosed. A diverging encoded laser
beam is transmitted to a target, and a return reflection of the encoded
beam received. The transmitted beam is sampled, and a plurality of
predetermined time delays are applied to the sampled laser beam. The
sampled laser beam with each of the predetermined time delays is
correlated with the return reflection until a sampled laser beam having a
time delay providing the highest correlation is found, the time delay
indicating laser travel time to and from the target. Range is determined
from this time delay. Bearing of the target is found by using a quadrant
protector to receive the return reflection. The process for finding
bearing uses the correlation process used to find range.