skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: New formulation for interferometric synthetic aperture radar for terrain mapping

Abstract

The subject of interferometric synthetic aperture radar (IFSAR) for high-accuracy terrain elevation mapping continues to gain importance in the arena of radar signal processing. Applications to problems in precision terrain-aided guidance and automatic target recognition, as well as a variety of civil applications, are being studied by a number of researchers. Not unlike many other areas of SAR processing, the subject of IFSAR can at first glance appear to be somewhat mysterious. In this paper we show how the mathematics of IFSAR for terrain elevation mapping using a pair of spotlight mode SAR collections can be derived in a very straightforward manner. Here, we employ an approach that relies entirely on three-dimensional Fourier transforms, and utilizes no reference to range equations or Doppler concepts. The result is a simplified explanation of the fundamentals of interferometry, including an easily-seen link between image domain phase difference and terrain elevation height. The derivation builds upon previous work by the authors in which a framework for spotlight mode SAR image formation based on an analogy to three-dimensional computerized axial tomography (CAT) was developed. After outlining the major steps in the mathematics, we show how a computer simulator which utilizes three-dimensional Fourier transforms can bemore » constructed that demonstrates all of the major aspects of IFSAR from spotlight mode collections.« less

Authors:
; ; ;
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10136681
Report Number(s):
SAND-93-2234C; CONF-940449-3
ON: DE94009063; TRN: 94:004483
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: Society of Photo-Optical Instrumentation Engineers conference on intelligent information systems,Orlando, FL (United States),4-8 Apr 1994; Other Information: PBD: [1994]
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; SYNTHETIC-APERTURE RADAR; PATTERN RECOGNITION; IMAGE PROCESSING; COMPLEX TERRAIN; MAPPING; 540210; BASIC STUDIES

Citation Formats

Jakowatz, Jr, C V, Wahl, D E, Eichel, P H, and Thompson, P A. New formulation for interferometric synthetic aperture radar for terrain mapping. United States: N. p., 1994. Web.
Jakowatz, Jr, C V, Wahl, D E, Eichel, P H, & Thompson, P A. New formulation for interferometric synthetic aperture radar for terrain mapping. United States.
Jakowatz, Jr, C V, Wahl, D E, Eichel, P H, and Thompson, P A. Fri . "New formulation for interferometric synthetic aperture radar for terrain mapping". United States. https://www.osti.gov/servlets/purl/10136681.
@article{osti_10136681,
title = {New formulation for interferometric synthetic aperture radar for terrain mapping},
author = {Jakowatz, Jr, C V and Wahl, D E and Eichel, P H and Thompson, P A},
abstractNote = {The subject of interferometric synthetic aperture radar (IFSAR) for high-accuracy terrain elevation mapping continues to gain importance in the arena of radar signal processing. Applications to problems in precision terrain-aided guidance and automatic target recognition, as well as a variety of civil applications, are being studied by a number of researchers. Not unlike many other areas of SAR processing, the subject of IFSAR can at first glance appear to be somewhat mysterious. In this paper we show how the mathematics of IFSAR for terrain elevation mapping using a pair of spotlight mode SAR collections can be derived in a very straightforward manner. Here, we employ an approach that relies entirely on three-dimensional Fourier transforms, and utilizes no reference to range equations or Doppler concepts. The result is a simplified explanation of the fundamentals of interferometry, including an easily-seen link between image domain phase difference and terrain elevation height. The derivation builds upon previous work by the authors in which a framework for spotlight mode SAR image formation based on an analogy to three-dimensional computerized axial tomography (CAT) was developed. After outlining the major steps in the mathematics, we show how a computer simulator which utilizes three-dimensional Fourier transforms can be constructed that demonstrates all of the major aspects of IFSAR from spotlight mode collections.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {4}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: