Accession Number : AD0783708

Title :   A Cross-Correlation Method for Computer-Aided Selection of CDAA SUM Patterns.

Descriptive Note : Technical rept.,

Corporate Author : ILLINOIS UNIV URBANA RADIO RESEARCH LAB

Personal Author(s) : Smith,S. Diane ; Bailey,Albert D. ; Ernst,Edward W. ; Gardner,Chester S.

Report Date : JUL 1974

Pagination or Media Count : 68

Abstract : A circularly disposed antenna array/radio direction finding (CDAA/RFD) system (Wullenweber) can be used to determine the azimuthal angle of arrival for an incoming signal. Unfortunately, there will always be a certain degree of inaccuracy in the resulting value since not all arriving signals will be perfect single-mode data. This report deals with one possible method of determining when to accept the angle-of-arrival value computed from a SUM pattern of the CDAA. Filtering and cross-correlating the data with an ideal pattern are performed. The resulting cross-correlation coefficient gives a value upon which an acceptance or rejection decision can be made. (Author)

Descriptors :   *Radio direction finders, Antenna arrays, Antenna radiation patterns, Correlation techniques, Computer applications, Azimuth

Subject Categories : Direction Finding

Distribution Statement : APPROVED FOR PUBLIC RELEASE