Sonar Echo Ranging Using Signals With Nonlinear Time-Frequency Characteristics

Antonia Papandreou-Suppappola; Seth B. Suppappola

doi:10.1109/LSP.2003.821660

Sonar Echo Ranging Using Signals With Nonlinear Time-Frequency Characteristics

Antonia Papandreou-Suppappola, Seth B. Suppappola

Electrical Engineering

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

In this letter, we investigate the applicability of cetacean sounds and frequency-modulated (FM) signals with dispersive characteristics toward the problem of echo ranging of acoustic targets. We derive closed-form expressions of the ambiguity function range resolution profile for nonlinear FM (NFM) pulses with similar time-frequency characteristics as cetacean whistles. We demonstrate that by varying the signal parameters, we can obtain their ambiguity function with a narrow mainlobe and low sidelobes desirable for estimating the time delay and Doppler shift of the received echo. We further test our results by formulating a detection problem using NFM pulses.

Original language	English (US)
Pages (from-to)	393-396
Number of pages	4
Journal	IEEE Signal Processing Letters
Volume	11
Issue number	3
DOIs	https://doi.org/10.1109/LSP.2003.821660
State	Published - Mar 2004

Keywords

Ambiguity function
Sonar echo ranging
Time-varying (TV) signals

ASJC Scopus subject areas

Signal Processing
Electrical and Electronic Engineering
Applied Mathematics

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10.1109/LSP.2003.821660

Cite this

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title = "Sonar Echo Ranging Using Signals With Nonlinear Time-Frequency Characteristics",

abstract = "In this letter, we investigate the applicability of cetacean sounds and frequency-modulated (FM) signals with dispersive characteristics toward the problem of echo ranging of acoustic targets. We derive closed-form expressions of the ambiguity function range resolution profile for nonlinear FM (NFM) pulses with similar time-frequency characteristics as cetacean whistles. We demonstrate that by varying the signal parameters, we can obtain their ambiguity function with a narrow mainlobe and low sidelobes desirable for estimating the time delay and Doppler shift of the received echo. We further test our results by formulating a detection problem using NFM pulses.",

keywords = "Ambiguity function, Sonar echo ranging, Time-varying (TV) signals",

author = "Antonia Papandreou-Suppappola and Suppappola, {Seth B.}",

note = "Funding Information: Manuscript received November 29, 2002; revised February 20, 2003. This work is supported by the Naval Undersea Warfare Center under Contract N66604-96-C-A336. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Shuichi Ohno.",

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AU - Suppappola, Seth B.

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N2 - In this letter, we investigate the applicability of cetacean sounds and frequency-modulated (FM) signals with dispersive characteristics toward the problem of echo ranging of acoustic targets. We derive closed-form expressions of the ambiguity function range resolution profile for nonlinear FM (NFM) pulses with similar time-frequency characteristics as cetacean whistles. We demonstrate that by varying the signal parameters, we can obtain their ambiguity function with a narrow mainlobe and low sidelobes desirable for estimating the time delay and Doppler shift of the received echo. We further test our results by formulating a detection problem using NFM pulses.

AB - In this letter, we investigate the applicability of cetacean sounds and frequency-modulated (FM) signals with dispersive characteristics toward the problem of echo ranging of acoustic targets. We derive closed-form expressions of the ambiguity function range resolution profile for nonlinear FM (NFM) pulses with similar time-frequency characteristics as cetacean whistles. We demonstrate that by varying the signal parameters, we can obtain their ambiguity function with a narrow mainlobe and low sidelobes desirable for estimating the time delay and Doppler shift of the received echo. We further test our results by formulating a detection problem using NFM pulses.

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KW - Time-varying (TV) signals

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Sonar Echo Ranging Using Signals With Nonlinear Time-Frequency Characteristics

Abstract

Keywords

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