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Accession Number:
AD1048724
Title:
Method for Establishing Direction of Arrival by Use of Signals of Opportunity
Descriptive Note:
Technical Report
Corporate Author:
NUWC Newport United States
Report Date:
2017-08-29
Pagination or Media Count:
42.0
Abstract:
A method is provided for use of a segmented aperture communications system to determine a direction of arrival of a radio signal in which the system includes a receiver plane having equally spaced and planar aligned radio frequency ports.Computation of the aperture segments depends on the port coordinates where the geometric relationship of the segments isused to determine a time delay and direction of arrival of the signal. The ports receive at least two orthogonal polarizations that characterize the incoming signals. A central port is used as reference to determine a phase difference associated at each port. Two angles are calculated by a simultaneous solution of two phase difference measurements to determine the direction of arrival solution. A mean direction of arrival solution is obtained by averaging solution estimates that are obtained by repeating the direction of arrival determination using random port pairs.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE