Accession Number : AD0760691

Title :   Bearing-of-Arrival Estimates for Transient Signals.

Descriptive Note : Research and development rept. Jun 71-Jun 72,

Corporate Author : NAVAL UNDERSEA CENTER SAN DIEGO CALIF

Personal Author(s) : Grace,O. D.

Report Date : APR 1973

Pagination or Media Count : 44

Abstract : The report theoretically and experimentally investigates three techniques for estimating the bearing of arrival of transient signals. These techniques estimate bearing of arrival from the differences between signal arrival times at the array elements, as measured by envelope delays and cross-correlation delays; the differences between signal amplitudes at the array elements; and a simultaneous bearing search by a steerable beam. Theoretical expressions for statistical bias and error range of each technique are developed, and these results are compared with corresponding experimental results that were obtained using data collected at sea. (Author)

Descriptors :   (*SONAR SIGNALS, DIRECTION FINDING), SONAR ARRAYS, INFORMATION THEORY, CORRELATION TECHNIQUES, TIME LAG THEORY, TRANSIENTS

Subject Categories : Cybernetics
      Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE