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Title: Correction of motion measurement errors beyond the range resolution of a synthetic aperture radar

Abstract

Motion measurement errors that extend beyond the range resolution of a synthetic aperture radar (SAR) can be corrected by effectively decreasing the range resolution of the SAR in order to permit measurement of the error. Range profiles can be compared across the slow-time dimension of the input data in order to estimate the error. Once the error has been determined, appropriate frequency and phase correction can be applied to the uncompressed input data, after which range and azimuth compression can be performed to produce a desired SAR image.

Inventors:
 [1];  [1];  [1]
  1. Albuquerque, NM
Issue Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
941140
Patent Number(s):
7391357
Application Number:
11/243,826
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01S - RADIO DIRECTION-FINDING
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Doerry, Armin W, Heard, Freddie E, and Cordaro, J Thomas. Correction of motion measurement errors beyond the range resolution of a synthetic aperture radar. United States: N. p., 2008. Web.
Doerry, Armin W, Heard, Freddie E, & Cordaro, J Thomas. Correction of motion measurement errors beyond the range resolution of a synthetic aperture radar. United States.
Doerry, Armin W, Heard, Freddie E, and Cordaro, J Thomas. Tue . "Correction of motion measurement errors beyond the range resolution of a synthetic aperture radar". United States. https://www.osti.gov/servlets/purl/941140.
@article{osti_941140,
title = {Correction of motion measurement errors beyond the range resolution of a synthetic aperture radar},
author = {Doerry, Armin W and Heard, Freddie E and Cordaro, J Thomas},
abstractNote = {Motion measurement errors that extend beyond the range resolution of a synthetic aperture radar (SAR) can be corrected by effectively decreasing the range resolution of the SAR in order to permit measurement of the error. Range profiles can be compared across the slow-time dimension of the input data in order to estimate the error. Once the error has been determined, appropriate frequency and phase correction can be applied to the uncompressed input data, after which range and azimuth compression can be performed to produce a desired SAR image.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {6}
}

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Works referenced in this record:

Range-Doppler Imaging of Rotating Objects
journal, January 1980


Anomalous propagation limitations to high-resolution SAR performance
conference, January 2002


Phase gradient autofocus-a robust tool for high resolution SAR phase correction
journal, July 1994