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

Personal Author(s):

• Steinbrecher,Donald H.

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.

Descriptors:

• patent applications
• COMMUNICATION SYSTEMS
• radio signals
• radio frequency
• transmission lines
• digital images

Subject Categories:

• Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE