2018年7月17日 · AMI attained interferometric synthetic aperture radar (IFSAR) data to generate Digital Elevation Models (DEMs). This radar mapping technology is an effective tool for collecting data under challenging circumstances such as cloud cover, extreme weather conditions, rugged terrain, and remote locations.

2018年7月17日 · AMI attained interferometric synthetic aperture radar (IFSAR) data to generate digital map products. This radar mapping technology is an effective tool for collecting data under challenging circumstances such as cloud cover, extreme weather conditions, rugged terrain, and remote locations.

2021年7月8日 · Field Definition: The type of product derived from interferometric synthetic aperture radar (IFSAR) data. Field Definition: For DSM & DTM resolution refers to the distance between elevation data points. The resolution for ORI is defined as the size of the smallest discernable feature that can be detected.

Interferometric synthetic aperture radar, abbreviated InSAR (or deprecated IfSAR), is a radar technique used in geodesy and remote sensing. This geodetic method uses two or more synthetic aperture radar (SAR) images to generate maps of surface deformation or digital elevation , using differences in the phase of the waves returning to the ...

2023年12月6日 · AMI attained interferometric synthetic aperture radar (IFSAR) to generate digital elevation model (DEM) data. This radar mapping technology is an effective tool for collecting data in challenging circumstances such as cloud cover, extreme weather conditions, rugged terrain, and remote locations.

Data for locations above 56 degrees North/South are licensed in 7.5-minute by 15-minute tiles. There are four different geospatial datasets: Orthorectified Radar Imagery (ORI), Digital Surface Models (DSM), and Digital Terrain Models (DTM), and Correlation maps (COR) .

2010年12月7日 · Interferometric synthetic aperture radar (IFSAR) helps make data collection across border areas feasible. Digital elevation models (DEMs) are widely used not only in the traditional mapping world but increasingly in support of new applications that are driven by consumer interests.

This collection of data contains topographic data stored in raster format at the NOAA Office for Coastal Management. The data may be derived from Interferometric Synthetic Aperture Radar (IfSAR), imagery, acoustics, or multiple elevation sources.

USGS has collaborated with other Federal agencies and the State of Alaska to acquire Interferometric Synthetic Aperture Radar (IFSAR) data over large areas of Alaska. Data from over 43% of the State have been collected to date, and plans have been established to pursue statewide IFSAR completion over the next several years.

The Alaska IFSAR Data and Status Web App allows users to view key metadata associated with the IFSAR elevation data for Alaska. Users can also view IFSAR datasets such as DTM, DSM, ORI, and contours.