Wide angle laser range and bearing finder

Details Wide angle laser range and bearing finder Wide angle laser range and bearing finder

2008-03-18

2008-03-18

Tarcza, Thomas H. (Department: 3662)

Optics: measuring and testing

Range or remote distance finding

With photodetection

Reexamination Certificate

active

07345743

ABSTRACT:
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.

REFERENCES:
patent: 2004/0233416 (2004-11-01), Doemens et al.

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