Understanding urban structures and processes is increasingly important as cities become the home of more of the earth’s population. This paper describes the use of a study area in Los Angeles, California to test the potential for integrative use of Interferometric Synthetic Aperature Radar (IFSAR) and Airborne Visible / Infrared Imaging Spectrometer (AVIRIS) hyperspectral imagery for analysis o...

The Shuttle Radar Topography Mission (SRTM), scheduled for an 11 day Space Shuttle flight in 1999, will use an Interferometric Synthetic Aperture Radar (IFSAR) instrument to produce a near-global digital elevation map of the earth’s land surface with 16 m absolute vertical height accuracy at 30 meter postings. SRTM will achieve the required interferometric baseline by extending a receive-only r...

This paper provides a brief review of interferometric synthetic aperture radar (InSAR), its history, the theory, and design / implementation / processing issues. Along-track, single-pass and repeat-pass cross-track interferometry are reviewed. Specific topics addressed include error sources and phase-unwrapping techniques. Several examples of InSAR applications are presented. Introduction For y...

Fire researchers and managers need accurate, reliable, and efficiently-obtained data for the development and application of crown fire behavior models. In particular, reliable estimates of critical canopy structure characteristics, including canopy bulk density, canopy height, canopy base height, and canopy fuel weight are required to accurately map fuel loading and model fire behavior over the...

In this research, Interferometric Synthetic Aperture Radar (IFSAR) and Shuttle Radar Topography Mission (SRTM) data are used to delineate a portion of the Saint Louis Bay watershed (Mississippi). In addition to these two digital elevation databases, the National Elevation Data (NED) and the United States Geological Service’ Digital Elevation Model (USGS-DEM) are also used for delineation. Resul...

Airborne Interferometric Synthetic Aperture Radar (IFSAR or INSAR) is maturing as a cost-effective three-dimensional mapping technology. It is attracting increased attention in the geospatial community because of its unique operational advantages. Various mapping products are being generated by Intermap’s STAR technology which is based on high-resolution airborne IFSAR. More significantly, thes...

Geodesists are, for the most part, a patient and hardworking lot. A day spent hiking to a distant peak, hours spent waiting for clouds to clear a lineof-sight between observation points, weeks spent moving methodically along a level line – such is the normal pulse of the geodetic profession. The fruits of such labors are all the more precious because they are so scarce. A good day spent with an...

The factors affecting the wide-scale use of DEMs (Digital Elevation Models) and their associated ORRIs (Ortho-Rectified Radar Images) created from airborne IFSAR (Interferometric Synthetic Aperture Radar) have been evolving rapidly over the past few years. These factors include both technical and non-technical characteristics. In this paper we review several of these characteristics including v...

Airborne Interferometric Synthetic Aperture Radar (IFSAR) is emerging as a highly cost-effective threedimensional (3D) mapping technology. Digital elevation models and orthorectified radar imagery are core products commercially manufactured by Intermap Technologies with its airborne IFSAR based STAR technology. The application list of STAR based mapping products is growing continuously due to t...