Statistics – Applications
Scientific paper
Jan 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984spie..440..118b&link_type=abstract
IN: Synthetic aperture systems; Proceedings of the Meeting, San Diego, CA, August 25, 26, 1983 (A85-22710 09-74). Bellingham, WA
Statistics
Applications
Laser Applications, Light Transmission, Optical Paths, Phased Arrays, Telescopes, Algorithms, Atmospheric Lasers, Light Beams, Wavelengths
Scientific paper
Design concepts and a numerical model are presented for an optical path length detector equipped phased array laser transmitter (PHASAR). The PHASAR is based on the multiple mirror telescope concept and focuses single or multiple beams on a target in the far field. The optical path lengths must be controlled to ensure phasing of the laser beams as they converge. A floating reference system would automatically compare the path lengths from each mirror to induce coherent additions of the beams at the receiver. The differences in phasing could be extracted by placing a small collector telescope at the array exit to reflect part of the beam back to a detector which would process the interference pattern. Emphasis is laid on assuring maximum target irradiation using multi-wavelength lasers. Algorithms for obtaining fine pointing control of the system are discussed.
Butts R. R.
Cusumano Salvatore J.
DeHainaut Christopher R.
Fender Janet S.
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