Studies of Monochromatic, Quasi-Monochromatic and Broadband Imaging Techniques,
Abstract
Passive imaging techniques are considered for the entire range of acoustic signal classes. Methods are developed for imaging of monochromatic point-sources, linear distributions of quasi-monochromatic sources (deterministic carrier-frequency with slow and random fluctuations of amplitude and phase), and broadband sources. Imaging of a monochromatic point-source is performed by 'focusing' a synthetic aperture on the radiator. However, this technique is not applicable for wider classes of signals. Thus a power cross-covariance measure of field points is used to image quasi-monochromatic sources. To image broadband sources, it is to show that real apertures must be considered. A subsequent report will provide a unifying theory of passive imaging in the form of a generalized imaging integral. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 18, 1974
- Accession Number
- AD0780443
Entities
People
- F. L. Rees
- L. B. Palmer
- L. W. Brooks
Organizations
- Technology Service Corporation