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Title: High Resolution Terrain Elevation Mapping Results from Airborne Cross-Track SAR Stereo


No abstract prepared.

; ;
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:
Report Number(s):
TRN: AH200108%%34
DOE Contract Number:
Resource Type:
Resource Relation:
Conference: IEEE ICASSP 2001 Conference, Salt Lake City, UT (US), 05/07/2001--05/11/2001; Other Information: PBD: 1 Dec 2000
Country of Publication:
United States

Citation Formats

Jakowatz, C.V. Jr., Yocky, D.A., and Wahl, D.E.. High Resolution Terrain Elevation Mapping Results from Airborne Cross-Track SAR Stereo. United States: N. p., 2000. Web.
Jakowatz, C.V. Jr., Yocky, D.A., & Wahl, D.E.. High Resolution Terrain Elevation Mapping Results from Airborne Cross-Track SAR Stereo. United States.
Jakowatz, C.V. Jr., Yocky, D.A., and Wahl, D.E.. 2000. "High Resolution Terrain Elevation Mapping Results from Airborne Cross-Track SAR Stereo". United States. doi:.
title = {High Resolution Terrain Elevation Mapping Results from Airborne Cross-Track SAR Stereo},
author = {Jakowatz, C.V. Jr. and Yocky, D.A. and Wahl, D.E.},
abstractNote = {No abstract prepared.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2000,
month =

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  • No abstract prepared.
  • 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 secondmore » 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.« less
  • In this paper we describe a new method for creating three-dimensional images using pairs of synthetic aperture radar (SAR) images obtained from a unique collection geometry. This collection mode involves synthetic apertures that have a common center. In this sense the illumination directions for the two SAR images are the same, while the slant planes are at different spatial orientations. The slant plane orientations give rise to cross-range layover (fore-shortening) components in the two images that are of equal magnitude but opposite directions. This differential cross-range layover is therefore proportional to the elevation of a given target, which is completelymore » analogous to the situation in stereo optical imaging, wherein two film planes (corresponding to the two slant planes) result in elevation-dependent parallax. Because the two SAR collections are coherent in this particular collection mode, the images have the same speckle patterns throughout. As a result, the images may be placed into stereo correspondence via calculation of correlations between micro-patches of the complex image data. The resulting computed digital stereo elevation map can be quite accurate. Alternatively, an analog anaglyph can be displayed for 3-D viewing, avoiding the necessity of the stereo correspondence calculation.« less
  • Recent studies in The Geysers region of Northern California have concentrated on drainage wind effects on tracer transport and diffusion in complex terrain, as part of the Atmospheric Studies in Complex Terrain (ASCOT) project. These studies combined tracer measurements, conventional tower and remote sensing meteorological measurements, and numerical wind field transport and diffusion models. One part of the meteorological measurement support used eight optical cross-path wind sensors across the principle air drainage valleys. These sensors had varying optical path lengths within the drainage layer of approx. 300 m to 3 km. Results of this study indicate that the combination ofmore » spatially averaged cross-path optical wind sensor and conventional tower mounted cup-vane anemometer data into a numerical plume transport and diffusion model for complex terrain has provided useful results. The most important of these results is an independent measure of wind data on a spatial scale compatible with necessarily large grid scales in numerical wind field models with topography. This allows assessment of terrain associated exposure problems for tower anemometers in complex terrain. The optical cross wind data can be used to compare necessary averaging times, and spatial distribution of point sensors and provide verification data to improve the logistics of instrument placement in combination with numerical models.« less