Title :
Modulo conversion method for estimating the direction of arrival
Author :
Mallik, Ranjan K.
fDate :
10/1/2000 12:00:00 AM
Abstract :
A modulo conversion method for resolving phase ambiguity and consequently estimating the direction of arrival (DOA) of an electromagnetic wave incident on a multielement interferometer with nonuniform spacings is presented. The technique involves a step-by-step reduction of the number of ambiguities in the measured phase difference of the longest interelement spacing. A major advantage of this method is that even the shortest interelement spacing can be larger than half-wavelength.
Keywords :
array signal processing; direction-of-arrival estimation; radio direction-finding; radiowave interferometry; direction of arrival estimation; error analysis; incident electromagnetic wave; modulo conversion method; multielement interferometer; nonuniform spacings; number of ambiguities; phase ambiguity; probability plot; step-by-step reduction; Antenna measurements; Broadband antennas; Direction of arrival estimation; Frequency; Linear antenna arrays; Phase estimation; Phase measurement; Phased arrays; Receiving antennas; Signal resolution;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
