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Title: A 3-D SAR approach to IFSAR processing

Abstract

Interferometric SAR (IFSAR) can be shown to be a special case of 3-D SAR image formation. In fact, traditional IFSAR processing results in the equivalent of merely a super-resolved, under-sampled, 3-D SAR image. However, when approached as a 3-D SAR problem, a number of IFSAR properties and anomalies are easily explained. For example, IFSAR decorrelation with height is merely ordinary migration in 3-D SAR. Consequently, treating IFSAR as a 3-D SAR problem allows insight and development of proper motion compensation techniques and image formation operations to facilitate optimal height estimation. Furthermore, multiple antenna phase centers and baselines are easily incorporated into this formulation, providing essentially a sparse array in the elevation dimension. This paper shows the Polar Format image formation algorithm extended to 3 dimensions, and then proceeds to apply it to the IFSAR collection geometry. This suggests a more optimal reordering of the traditional IFSAR processing steps.

Authors:
;
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (US); Sandia National Labs., Livermore, CA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
752100
Report Number(s):
SAND99-2400C
TRN: AH200018%%442
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: Aerosense 2000, Algorithms for Synthetic Aperture Radar Imagery VII (or48), Orlando, FL (US), 04/24/2000--04/28/2000; Other Information: PBD: 1 Mar 2000
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; RADAR; IMAGES; IMAGE PROCESSING; MOTION; HEIGHT; ALGORITHMS; INTERFEROMETRY; IFSAR; INTERFEROMETRY: FINE RESOLUTION; 3-D; POLAR FORMAT

Citation Formats

DOERRY,ARMIN W., and BICKEL,DOUGLAS L. A 3-D SAR approach to IFSAR processing. United States: N. p., 2000. Web.
DOERRY,ARMIN W., & BICKEL,DOUGLAS L. A 3-D SAR approach to IFSAR processing. United States.
DOERRY,ARMIN W., and BICKEL,DOUGLAS L. Wed . "A 3-D SAR approach to IFSAR processing". United States. doi:. https://www.osti.gov/servlets/purl/752100.
@article{osti_752100,
title = {A 3-D SAR approach to IFSAR processing},
author = {DOERRY,ARMIN W. and BICKEL,DOUGLAS L.},
abstractNote = {Interferometric SAR (IFSAR) can be shown to be a special case of 3-D SAR image formation. In fact, traditional IFSAR processing results in the equivalent of merely a super-resolved, under-sampled, 3-D SAR image. However, when approached as a 3-D SAR problem, a number of IFSAR properties and anomalies are easily explained. For example, IFSAR decorrelation with height is merely ordinary migration in 3-D SAR. Consequently, treating IFSAR as a 3-D SAR problem allows insight and development of proper motion compensation techniques and image formation operations to facilitate optimal height estimation. Furthermore, multiple antenna phase centers and baselines are easily incorporated into this formulation, providing essentially a sparse array in the elevation dimension. This paper shows the Polar Format image formation algorithm extended to 3 dimensions, and then proceeds to apply it to the IFSAR collection geometry. This suggests a more optimal reordering of the traditional IFSAR processing steps.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Mar 01 00:00:00 EST 2000},
month = {Wed Mar 01 00:00:00 EST 2000}
}

Conference:
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