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Title: Interferometric synthetic aperture radar terrain elevation mapping from multiple observations

Abstract

All prior interferometric SAR imaging experiments to date dealt with pairwise processing. Simultaneous image collections from two antenna systems or two-pass single antenna collections are processed as interferometric pairs to extract corresponding pixel by pixel phase differences which encode terrain elevation height. The phase differences are wrapped values which must be unwrapped and scaled to yield terrain height. We propose two major classes of techniques that hold promise for robust multibaseline (multiple pair) interferometric SAR terrain elevation mapping. The first builds on the capability of a recently published method for robust weighted and unweighted least-squares phase unwrapping, while the second attacks the problem directly in a maximum likelihood (ML) formulation. We will provide several examples (actual and simulated SAR imagery) that illustrate the advantages and disadvantages of each method.

Authors:
;
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10161895
Report Number(s):
SAND-94-0624C; CONF-941090-2
ON: DE94014185; BR: GB0103012
DOE Contract Number:
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: Institute of Electrical and Electronics Engineers (IEEE) digital signal processing workshop,Yosemite, CA (United States),3-5 Oct 1994; Other Information: PBD: [1994]
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; SYNTHETIC-APERTURE RADAR; ALGORITHMS; INTERFEROMETRY; COMPLEX TERRAIN; MAPPING; REMOTE SENSING; LEAST SQUARE FIT; 420200; 990200; FACILITIES, EQUIPMENT, AND TECHNIQUES; MATHEMATICS AND COMPUTERS

Citation Formats

Ghiglia, D.C., and Wahl, D.E.. Interferometric synthetic aperture radar terrain elevation mapping from multiple observations. United States: N. p., 1994. Web.
Ghiglia, D.C., & Wahl, D.E.. Interferometric synthetic aperture radar terrain elevation mapping from multiple observations. United States.
Ghiglia, D.C., and Wahl, D.E.. 1994. "Interferometric synthetic aperture radar terrain elevation mapping from multiple observations". United States. doi:. https://www.osti.gov/servlets/purl/10161895.
@article{osti_10161895,
title = {Interferometric synthetic aperture radar terrain elevation mapping from multiple observations},
author = {Ghiglia, D.C. and Wahl, D.E.},
abstractNote = {All prior interferometric SAR imaging experiments to date dealt with pairwise processing. Simultaneous image collections from two antenna systems or two-pass single antenna collections are processed as interferometric pairs to extract corresponding pixel by pixel phase differences which encode terrain elevation height. The phase differences are wrapped values which must be unwrapped and scaled to yield terrain height. We propose two major classes of techniques that hold promise for robust multibaseline (multiple pair) interferometric SAR terrain elevation mapping. The first builds on the capability of a recently published method for robust weighted and unweighted least-squares phase unwrapping, while the second attacks the problem directly in a maximum likelihood (ML) formulation. We will provide several examples (actual and simulated SAR imagery) that illustrate the advantages and disadvantages of each method.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1994,
month = 7
}

Conference:
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  • Abstract not provided.