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Title: Apodized RFI filtering of synthetic aperture radar images

Abstract

Fine resolution Synthetic Aperture Radar (SAR) systems necessarily require wide bandwidths that often overlap spectrum utilized by other wireless services. These other emitters pose a source of Radio Frequency Interference (RFI) to the SAR echo signals that degrades SAR image quality. Filtering, or excising, the offending spectral contaminants will mitigate the interference, but at a cost of often degrading the SAR image in other ways, notably by raising offensive sidelobe levels. This report proposes borrowing an idea from nonlinear sidelobe apodization techniques to suppress interference without the attendant increase in sidelobe levels. The simple post-processing technique is termed Apodized RFI Filtering (ARF).

Authors:
 [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1204095
Report Number(s):
SAND2014-1376
503904
DOE Contract Number:
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English

Citation Formats

Doerry, Armin Walter. Apodized RFI filtering of synthetic aperture radar images. United States: N. p., 2014. Web. doi:10.2172/1204095.
Doerry, Armin Walter. Apodized RFI filtering of synthetic aperture radar images. United States. doi:10.2172/1204095.
Doerry, Armin Walter. 2014. "Apodized RFI filtering of synthetic aperture radar images". United States. doi:10.2172/1204095. https://www.osti.gov/servlets/purl/1204095.
@article{osti_1204095,
title = {Apodized RFI filtering of synthetic aperture radar images},
author = {Doerry, Armin Walter},
abstractNote = {Fine resolution Synthetic Aperture Radar (SAR) systems necessarily require wide bandwidths that often overlap spectrum utilized by other wireless services. These other emitters pose a source of Radio Frequency Interference (RFI) to the SAR echo signals that degrades SAR image quality. Filtering, or excising, the offending spectral contaminants will mitigate the interference, but at a cost of often degrading the SAR image in other ways, notably by raising offensive sidelobe levels. This report proposes borrowing an idea from nonlinear sidelobe apodization techniques to suppress interference without the attendant increase in sidelobe levels. The simple post-processing technique is termed Apodized RFI Filtering (ARF).},
doi = {10.2172/1204095},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2014,
month = 2
}

Technical Report:

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