Estimating Torpedo range using multi-path signals and fast orthogonal search techniques

Authors

  • Jeff Collins Naval Operations School, Station Forces, P.O. Box 99000, Halifax, NS B3K 5X5
  • Donald R. McGaughey Royal Military College of Canada, Station Forces, P.O. Box 17000, Kingston, ON K7K 7B4
  • Jim Therriault Defence Research and Development Canada (Atlantic), P.O. Box 1012, Dartmouth, NS B2Y 3Z7
  • Sean Pecknold Defence Research and Development Canada (Atlantic), P.O. Box 1012, Dartmouth, NS B2Y 3Z7

Keywords:

Computer simulation, MATLAB, Range finders, Spectrum analysis, Torpedoes, Fast orthogonal search techniques, Surface-reflection signals, Torpedo Detection Algorithm (TDA), Torpedo range estimation algorithm

Abstract

This paper introduces a torpedo range estimation algorithm, which is primarily developed in MATLAB. The Torpedo Detection Algorithm (TDA) employs the fast orthogonal search (FOS) algorithm for high-resolution spectral analysis to detect the closely spaced direct-path and surface-reflection signals. When a direct-path and surface-reflection are found, an automatic alert of a possible torpedo detection is initiated. In simulation, the existence of a torpedo and its range are found as it travels from 5000 to 750 metres from the receiver. Simple trigonometric expressions are used to estimate the torpedo's range given the two frequencies estimated by FOS and a priori information about the torpedo speed and depth. The predicted and actual ranges for a simulation in which a torpedo approaches from 5000 to 750 metres is shown.

Additional Files

Published

2007-12-01

How to Cite

1.
Collins J, McGaughey DR, Therriault J, Pecknold S. Estimating Torpedo range using multi-path signals and fast orthogonal search techniques. Canadian Acoustics [Internet]. 2007 Dec. 1 [cited 2024 Sep. 12];35(4):11-4. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1975

Issue

Vol. 35 No. 4 (2007)

Section

Technical Articles

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