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Title: Synthetic Aperture Radar Imaging Using a Beamforming Framework.

Abstract

Abstract not provided.

Authors:
;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sandia National Laboratories, null
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1414891
Report Number(s):
SAND2017-10146B
657090
DOE Contract Number:
AC04-94AL85000
Resource Type:
Book
Country of Publication:
United States
Language:
English

Citation Formats

Charles V. Jakowatz, Jr., and Wahl, Daniel E. Synthetic Aperture Radar Imaging Using a Beamforming Framework.. United States: N. p., 2017. Web.
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Charles V. Jakowatz, Jr., & Wahl, Daniel E. Synthetic Aperture Radar Imaging Using a Beamforming Framework.. United States.
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Charles V. Jakowatz, Jr., and Wahl, Daniel E. Fri . "Synthetic Aperture Radar Imaging Using a Beamforming Framework.". United States. doi:.
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@article{osti_1414891,
title = {Synthetic Aperture Radar Imaging Using a Beamforming Framework.},
author = {Charles V. Jakowatz, Jr. and Wahl, Daniel E.},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Sep 01 00:00:00 EDT 2017},
month = {Fri Sep 01 00:00:00 EDT 2017}
}
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Book:
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  • ; ;
    Abstract not provided.

  • ;
    This paper discusses a three-dimensional synthetic aperture imaging technique based on time-domain focusing of pulse-echo radar data. We describe the basic image formation process, important data processing issues, and compensation for planar variations in the media. We present a high-resolution volumetric image reconstruction of a concrete test slab and show that we are able to identify steel reinforcing bars in the image. We conclude with a brief comparison of this imaging method with a technique based on diffraction tomography.

  • Abstract not provided.

  • An imaging system for analyzing structures comprises a radar transmitter and receiver connected to a timing mechanism that allows a radar echo sample to be taken at a variety of delay times for each radar pulse transmission. The radar transmitter and receiver are coupled to a position determining system that provides the x,y position on a surface for each group of samples measured for a volume from the surface. The radar transmitter and receiver are moved about the surface to collect such groups of measurements from a variety of x,y positions. Return signal amplitudes represent the relative reflectivity of objectsmore » within the volume and the delay in receiving each signal echo represents the depth at which the object lays in the volume and the propagation speeds of the intervening material layers. Successively deeper z-planes are backward propagated from one layer to the next with an adjustment for variations in the expected propagation velocities of the material layers that lie between adjacent z-planes. 10 figs.« less

  • An imaging system for analyzing structures comprises a radar transmitter and receiver connected to a timing mechanism that allows a radar echo sample to be taken at a variety of delay times for each radar pulse transmission. The radar transmitter and receiver are coupled to a position determining system that provides the x,y position on a surface for each group of samples measured for a volume from the surface. The radar transmitter and receiver are moved about the surface to collect such groups of measurements from a variety of x,y positions. Return signal amplitudes represent the relative reflectivity of objectsmore » within the volume and the delay in receiving each signal echo represents the depth at which the object lays in the volume and the propagation speeds of the intervening material layers. Successively deeper z-planes are backward propagated from one layer to the next with an adjustment for variations in the expected propagation velocities of the material layers that lie between adjacent z-planes.« less