00000nam 2200000zi 4500 9.953830 CaOODSP 20250916124753 m o d f cr |n||||||||| 250806e199407 bccad obt f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn--- DR52-11/18-1994E-PDF Maranda, Brian Howard, 1957- author. A simple model for the prediction of phase swings observed in acoustic propagation data / by MB.H. Maranda and G.R. Ebbeson. Victoria, B.C. : Defence Research Establishment Pacific = Centre de recherches pour la défense pacifique : Research and Development Branch, Department of National Defence, July 1994. 1 online resource (17 pages, 3 unnumbered pages) : illustrations, charts. text txt rdacontent computer c rdamedia online resource cr rdacarrier Technical memorandum ; 94-117 Digitized edition from print [produced by Defence Research and Development Canada]. "Unclassified." Includes bibliographical references (page 17). "In 1986, a propagation loss experiment was conducted in which a narrowband source moved away from two widely separated hydrophones located in shallow water. It was found that the relative phase between the signals received at the two hydrophones underwent rapid swings near the nulls of the pressure field. In this paper, a simple two-mode propagation model is derived that explains the source of these phase swings. In order to produce phase swings as large as those observed in the experimental data, it was necessary to introduce different bathymetries along the propagation paths to the two hydrophones"--Abstract. Includes abstracts in English and French. Underwater acoustics Canada. Acoustique sous-marine Canada. Defence Research Establishment Pacific, issuing body. Canada. Department of National Defence. Research and Development Branch, issuing body. Technical memorandum (Defence Research Establishment Pacific) 94-117. (CaOODSP)9.936067 PDF 948 KB https://publications.gc.ca/collections/collection_2025/rddc-drdc/DR52-11-18-1994-eng.pdf