Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1995-03-20
1996-07-02
Pascal, Leslie
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359117, 359136, 356363, H04J 1400
Patent
active
055328601
ABSTRACT:
A spatial synchronization method for an optical communications system includes the step of transmitting from a transmit aperture a pyramidal synchronizing profile so as to sequentially spatially register a user identification speckle pattern at a receive aperture. The iterative patterns in the pyramidal synchronizing profile detected by the receive array are processed and correlated with a library of respective user pyramidal synchronizing profiles so as to match and register the speckle pattern for a particular user. Registration of the user speckle pattern provides an offset value representing the spatial relation of a reference point of the user's pattern to a corresponding reference point of the receive aperture, which offset information is applied to a receive pattern processor so that the receive aperture is aligned with the transmitted speckle patterns.
REFERENCES:
patent: 3755676 (1973-08-01), Kinsel
patent: 4691312 (1987-09-01), Vlasak
patent: 4866699 (1989-09-01), Brackett et al.
patent: 5206923 (1993-04-01), Karlsson
patent: 5291324 (1994-03-01), Hinterlong
patent: 5410147 (1995-04-01), Riza et al.
patent: 5450199 (1995-09-01), Reider
Hassan, Amer. A., John E. Hershey, Nabeel A. Riza. Spatial Optical CDMA. IEEE Journal, vol. 13, No. 3, Apr. 1995, pp. 609-613.
Riza, Nabeel A., John E. Hershey, Amer A. Hassan. Signaling System for Multiple-access Laser Communications and Interference Protection. Applied Optics, vol. 32, No. 11, 10 Apr. 1993, pp. 1965-1972.
Hassan Amer A.
Hershey John E.
Riza Nabeel A.
Bacares Rafael
General Electric Company
Ingraham Donald S.
Pascal Leslie
Snyder Marvin
LandOfFree
Spatial synchronization for optical communication system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Spatial synchronization for optical communication system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spatial synchronization for optical communication system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1511514