Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1998-07-27
2000-11-28
Lee, John R.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
356 401, G01S 1766
Patent
active
06153871&
ABSTRACT:
A non-imaging laser-based tracking system (38) for tracking the position of a targeted moving object (20). The tracking system (38) includes two lasers: a reference laser (26) and a slave laser (30). Each laser is a weapon, and when locked on a target, single laser effectiveness may be doubled without a thermal blooming performance loss associated with a single laser operating at twice the power. The slave laser (30) beam is dithered relative to the reference laser (26) beam in a direction along the longitudinal axis (22) of the target (20). The system includes an optical receiver (34) for repetitively scanning the irradiance profile reflected by the target (20). Since the slave laser (30) beam is dithered relative to the reference laser (26) beam, both laser beams will jitter and drift together providing a gain factor of two in average irradiance on the moving target (20).
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Lee John R.
TRW Inc.
Yatsko Michael S.
LandOfFree
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