Accession Number : ADA194862
Title : A Fiber Optic Beamforming Processor for Wideband Direction Finding.
Descriptive Note : Professional paper for Mar 88,
Corporate Author : NAVAL OCEAN SYSTEMS CENTER SAN DIEGO CA
Personal Author(s) : Pappert, Stephen A
PDF Url : ADA194862
Report Date : Apr 1988
Pagination or Media Count : 3
Abstract : This paper describes a wideband electro-optic direction finding (DF) processor employing an array of laser diodes, an array of photo-detectors, and a network of fiber optic delay lines. This DF filter offers a potential operational bandwidth in excess of 10 GHz and allows for multiple, simultaneous beam angular responses with peaks which are independent of frequency. Two eight-laser, two-beam laboratory test model DF devices, one utilizing multimode optical fiber and the other single-mode fiber, were constructed. These experimental optical beamforming filters are operable in the 100-2000 MHz frequency range and can simultaneously monitor two angles of arrival. Experiments were performed to determine the two systems' sensitivity, dynamic range, angular resolution, and frequency response.
Descriptors : *ANGLE OF ARRIVAL, *DIRECTION FINDING, *FIBER OPTICS, *FIBER OPTICS TRANSMISSION LINES, ANGLES, ARRAYS, BANDWIDTH, BEAM FORMING, BROADBAND, DELAY LINES, DIODES, DYNAMIC RANGE, ELECTROOPTICS, FREQUENCY, FREQUENCY RESPONSE, LASERS, MULTIMODE, OPTICAL FILTERS, PROCESSING EQUIPMENT, RESOLUTION, SENSITIVITY
Subject Categories : Target Direction, Range and Position Finding
Distribution Statement : APPROVED FOR PUBLIC RELEASE