Accession Number:

ADA279980

Title:

Wavelet Transformations for Helicopter Identification via Acoustic Signatures

Descriptive Note:

Corporate Author:

NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA

Personal Author(s):

• Solka, Jeffrey L.
• Priebe, Carey E.
• Hayes, Halford I.
• Rogers, George W.

Report Date:

1994-05-01

Pagination or Media Count:

25.0

Abstract:

The ability to classify helicopters based on their acoustic signature has applications to both detection and tracking. The current approach to this problem uses standard signal-processing techniques to extract features based on the fundamental harmonics of the helicopters blades. This document examines the role that the wavelet transformation might play in this feature extraction process. It addresses ways to use the wavelet transform both to improve the performance of the existing approach and to expand the capabilities of the classification system. Wavelet transformations, Helicopter identification, Signal processing.

Descriptors:

• *HELICOPTERS
• *ACOUSTIC SIGNATURES
• SIGNAL PROCESSING
• DETECTION
• HARMONICS
• CLASSIFICATION
• SIGNATURES
• RECREATION
• ROTOR BLADES
• TRANSFORMATIONS
• ACOUSTICS
• EXTRACTION
• STANDARDS
• DOCUMENTS
• TRACKING
• IDENTIFICATION

Subject Categories:

• Helicopters
• Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE