Target Identification by First-Pulse Deconvolution
Abstract
A reliable method for identifying an echo by using only the first part of that echo returned by a smooth reflecting body is presented. Dividing the Fourier transform of the entire reflected echo by the Fourier transform of the incident pulse results in a function that is highly variable with frequency. Using only the very first portion of the target echo in this deconvolution process consistently results in a function that changes slowly over the frequency band for a variety of target conditions. This result is demonstrated for echoes reflected from submarine models in air and water. Also, both single-hull (U.S.) and double-hull (Soviet) configurations were measured in water. Echo results were compared for a coated and uncoated double-hull target. An equivalent full-scale frequently range of between approximately 600 Hz and 1400 Hz was examined. A stable and smooth function of frequency was observed in all cases when the very first part of the reflected pulse was used.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 29, 1980
- Accession Number
- ADA389981
Entities
People
- Werner G. Neubauer
Organizations
- United States Naval Research Laboratory