Laser along-body tracker comprising laser beam dithering

Details Laser along-body tracker comprising laser beam dithering Laser along-body tracker comprising laser beam dithering

1996-10-11

1999-09-21

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

356 401, G01S 1766

Patent

active

059557249

ABSTRACT:
A non-imaging laser-based tracking system for tracking the position of a targeted moving object. The tracking system includes two lasers: a reference laser and a slave laser. 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 beam is dithered relative to the reference laser beam in a direction along the longitudinal axis of the target. The system includes an optical receiver for repetitively scanning the irradiance profile reflected by the target. Since the slave laser beam is dithered relative to the reference laser beam, both laser beams will jitter and drift together providing a gain factor of two in average irradiance on the moving target.

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Peter M. Livingston, et al., "Laser Beam Active Tracking for Specular Objects to .lambda./D", Applied Optics, vol. 24, No. 13, Jul. 1, 1995, pp. 1919-1925.
Ahmed Erteza, "Boresighting a Gaussian Beam on A Specular Target Point: A Method Using Conical Scan", Applied Optics, vol. 15, No. 3, Mar. 1976, pp. 656-660.

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