NDLI: Improved Active Sonar Performance Using Costas Waveforms

Content Provider	IEEE Xplore Digital Library
Author	Pecknold, S.P. Renaud, W.M. McGaughey, D.R. Marsden, R.F.
Copyright Year	1976
Abstract	Costas waveforms are a class of waveforms having the form of frequency-hopped pulse trains. When used as a transmit waveform in an active sonar system they may provide superior performance to conventional waveforms such as continuous-wave (CW) and frequency-modulated (FM) pulses, as each Costas waveform provides both range and speed information for a target echo. Matched-filtering identifies individual Costas waveforms from among a set of Costas waveforms that are received. This characteristic allows for more frequent ensonification of a water mass for targets at moderate ranges, giving a higher rate of return echoes for improved target tracking. Alternatively, it offers the potential for overlapping bandwidths and waveform types to be used in a multisonar environment. In this work, the Costas wideband ambiguity, cross- and autocorrelation functions are derived. The range and speed resolutions of Costas waveforms are compared to CW and FM pulse resolutions both via a broadband pulse propagation model and using data obtained during the Defence Research And Development Canada-Atlantic (DRDC Atlantic) Towed Integrated Active-Passive Sonar (TIAPS) deep sea trials in September 2003. Costas waveforms are shown to provide simultaneous range and speed resolution in deep- and shallow-water environments, and Costas waveforms are shown to be individually identifiable at the receiver. The performance of Costas waveforms in reverberation is also briefly examined, and found to be similar to that of FM pulses.
Sponsorship	IEEE Oceanic Engineering Society
Starting Page	559
Ending Page	574
Page Count	16
File Size	4087517
File Format	PDF
ISSN	03649059
Volume Number	34
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency Bandwidth Signal to noise ratio Signal resolution Sonar measurements Signal processing Research and development Sea measurements Signal detection Detectors sonar signal processing Doppler measurements matched filters permutation matrices
Content Type	Text
Resource Type	Article
Subject	Ocean Engineering Mechanical Engineering Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Adaptive pulse optimization for improved sonar range accuracy

Active sonar detection in shallow water using the Page test

A Generalized Linear Filter Approach for Sonar Receivers

Reverberation Suppression Using Wideband Doppler-Sensitive Pulses

Signal excess in K-distributed reverberation

Range-Doppler processing with the cone kernel time-frequency representation

Non-recurrent wideband continuous active sonar

Mismatched filters for Doppler-sensitive active sonar pulses

LPI waveforms for active sonar?

Improved Active Sonar Performance Using Costas Waveforms

Similar Documents

Adaptive pulse optimization for improved sonar range accuracy

Active sonar detection in shallow water using the Page test

A Generalized Linear Filter Approach for Sonar Receivers

Reverberation Suppression Using Wideband Doppler-Sensitive Pulses

Signal excess in K-distributed reverberation

Range-Doppler processing with the cone kernel time-frequency representation

Non-recurrent wideband continuous active sonar

Mismatched filters for Doppler-sensitive active sonar pulses

LPI waveforms for active sonar?

Improved Active Sonar Performance Using Costas Waveforms