Comparing Digital Flood Insurance Rate Maps (DFIRMs) to Interferometric Synthetic Aperture Radar (IFSAR) Products

Abstract

As part of the Federal Emergency Management Agency (FEMA) Map Modernization program, Flood Insurance Rate Maps (FIRMs) are converted from hard copy products to Digital Flood Insurance Rate Maps (DFIRMs). The next generation of DFIRMs will have more data and better accuracy than the hard copy FIRMs. FEMA's main goal is to have the ability to update DFIRMs using Geographic Information System (GIS) as humans change their physical and manmade environments. This means flood models will accurately reflect the natural and manmade environments. This study investigates the accuracy of several layers of the DFIRMs for the Virginia Beach, VA, area using Interferometric Synthetic Aperture Radar (IFSAR) products. IFSAR Digital Elevation Model (DEM) and Ortho-Rectified Image (ORI), referred to as a magnitude image, were used to compare the data accuracy and content of the DFIRMs. This study will provide timely information needed for future DFIRM production.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2000
Accession Number
ADA486484

Entities

People

  • James J. Damron

Organizations

  • Engineer Research and Development Center

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Accuracy
  • Coordinate Systems
  • Data Sets
  • Department Of Homeland Security
  • Digital Elevation Models
  • Engineering
  • Geographic Information Systems
  • Global Positioning Systems
  • Hard Copy
  • Inertial Navigation
  • Inertial Navigation Systems
  • Information Systems
  • Models
  • Synthetic Aperture Radar
  • United States
  • Urban Areas
  • World Geodetic System

Readers

  • Computer Vision.
  • Emergency Management and Homeland Security.
  • Industrial Economics