Engineering topics
Zebker, H.
Publications and source records attributed to Zebker, H..
Techniques and Tools for Estimating Ionospheric Effects in Interferometric and Polarimetric SAR Data
The InSAR Scientific Computing Environment (ISCE) is a flexible, extensible software tool designed for the end-to-end processing and analysis of synthetic aperture radar data. ISCE inherits the core of the ROI_PAC interferometric tool, but contains improvements at all levels of the radar processing chain, including a modular and extensible architecture, new focusing approach, better geocoding of the data, handling of multi-polarization data, radiometric calibration, and estimation and correction of ionospheric effects. In this paper we describe the characteristics of ISCE with emphasis on the ionospheric modules. To detect ionospheric anomalies, ISCE implements the Faraday rotation method using quadpolarimetric images, and the split-spectrum technique using interferometric single-, dual- and quad-polarimetric images. The ability to generate co-registered time series of quad-polarimetric images makes ISCE also an ideal tool to be used for polarimetric-interferometric radar applications.
Goldstone Mercury Radar Full-Disk Imaging and Radar Interferometry
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Surface Deformation and Coherence Measurements of Kilauea Volcano, Hawaii, from Six Month Repeat Pass Interferometry with SIR-C
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Recent Results in Surface Deformation Measurements: Spaceborne Repeat Pass Interferometry with ERS, JERS, and SIR-C
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On the Derivation of Coseismic Displacement Fields Using Differential Radar Interferometry: The Landers Eartquake
We present a map of the coseismic displacement field resulting from the Landers, CA, June 28, 1992 earthquake derived using data acquired from an orbiting high resolution radar system. We achieve results more accurate than previous space studies and similar in accuracy to those obtained by conventional field survey techniques. Data from the ERS-1 synthetic aperture radar instrument acquired in April, July, and August 1992 are used to generate a high resolution, wide area map of the displacements.
Generation of High Resolution Topographic Maps of the Galapagos Islands Using TOPSAR Data
Data collected over the Galapagos Islands using the JPL/NASA TOPSAR airborne interferometric radar covered an area in excess of 5000 km(sup 2). This paper presents the algorithms used to mosaic the data into a high resolution (10X10 m ground spacing) topographic map of the islands. Also described are the correlation and height maps which are generated as ancillary products to the topographic maps.
Generation of High Resolution Topographic Maps of the Galapagos islands Using TOPSAR Data
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The JPL Aircraft Topographic Synthetic Aperture Radar (TOPSAR) Program
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Imaging Radar Interferometry
Synthetic aperture radar has been used for high resolution imaging from aircraft and satellites for many years.
TOPSAT: The Global Topography Mission
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Effects of Environmental Change on Radar Backscastter in the Oregon Transect
This paper substantiates earlier findings that radar measurements in the Oregon transect cannot be uniquely related to biomass, and that instead inversion algorithms should be used,.
Analysis and Evaluation of the TOPSAR Topographic SAR Interferometer
Across-track interferometric SAR provides high resolution both horizontally and vertically which is of importance to topographic mapping applications.
An Evaluation of the TOPSAR Topographic SAR Interferometer Performance
Evaluation based on standard TOPSAR product with 10m pixel spacing.
Accuracy of Topographic Maps Derived from ERS-1 Interferometric Radar
A radar interferometric technique for topographic mapping of surfaces promises a high resolution approach to generation of digital elevation models.
Analysis and Evaluation of the NASA/JPL TOPSAR Across-Track Interferometric SAR System
This paper presents a detailed description of horizontal and vertical errors and their characteristics. Also discussed are key factors that presently limit the system performance.
The Global Topography Mission
An accurate description of the surface elevation of the Earth is of fundamental importance to many branches of Earth science. A number of working groups have considered the characteristics of the available digital topographic data base and found that there are significant deficiencies in available topographic data that severly limit existing and potential new scientific applications.