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Title: Automatic Change Detection in Synthetic Aperture Radar (SAR)


No abstract provided.

 [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Technical Report
Country of Publication:
United States

Citation Formats

Murphy, David Patrick, and Calef, Matthew T. Automatic Change Detection in Synthetic Aperture Radar (SAR). United States: N. p., 2017. Web. doi:10.2172/1375848.
Murphy, David Patrick, & Calef, Matthew T. Automatic Change Detection in Synthetic Aperture Radar (SAR). United States. doi:10.2172/1375848.
Murphy, David Patrick, and Calef, Matthew T. Tue . "Automatic Change Detection in Synthetic Aperture Radar (SAR)". United States. doi:10.2172/1375848.
title = {Automatic Change Detection in Synthetic Aperture Radar (SAR)},
author = {Murphy, David Patrick and Calef, Matthew T.},
abstractNote = {No abstract provided.},
doi = {10.2172/1375848},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 15 00:00:00 EDT 2017},
month = {Tue Aug 15 00:00:00 EDT 2017}

Technical Report:

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  • Radar non-acoustic anti-submarine warfare (NAASW) became the subject of considerable scientific investigation and controversy in the West subsequent to the discovery by the Seasat satellite in 1978 that manifestations of underwater topography, thought to be hidden from the radar, were visible in synthetic aperture radar (SAR) images of the ocean. In addition, the Seasat radar produced images of ship wakes where the observed angle between the wake arms was much smaller than expected from classical Kelvin wake theory. These observations cast doubt on the radar oceanography community's ability to adequately explain these phenomena, and by extension on the ability ofmore » existing hydrodynamic and radar scattering models to accurately predict the observability of submarine-induced signatures. If one is of the opinion that radar NAASW is indeed a potentially significant tool in detecting submerged operational submarines, then the Soviet capability, as evidenced throughout this report, will be somewhat daunting. It will be shown that the Soviets have extremely fine capabilities in both theoretical and experimental hydrodynamics, that Soviet researchers have been conducting at-sea radar remote sensing experiments on a scale comparable to those of the United States for several years longer than we have, and that they have both an airborne and spaceborne SAR capability. The only discipline that the Soviet Union appears to be lacking is in the area of digital radar signal processing. If one is of the opinion that radar NAASW can have at most a minimal impact on the detection of submerged submarines, then the Soviet effort is of little consequence and poses not threat. 280 refs., 31 figs., 12 tabs.« less
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