Alaska Satellite Facility: find and download SAR, InSAR, and other data.

Use the Area of Interest Tool or the Point Tool to view and select for download datasets using either a bounding box or a point. Use the Projects in Map View panel to zoom to datasets by clicking or touching them. You can also toggle previews for each dataset by …

2025年2月14日 · This is a tiled collection of the 3D Elevation Program (3DEP) covering Alaska only, and is 5-meter resolution. The 3DEP data holdings serve as the elevation layer of The National Map, and provide foundational elevation information for earth science studies and mapping applications in the United States.

The creation of radiometric terrain corrected (RTC) products was a project of the Alaska Satellite Facility to make SAR data accessible to a broader community of users. RTC removes the geometric and radiometric distortions inherent in synthetic aperture radar (SAR) and the corrected PALSAR data are

2004年8月11日 · More than 350,000 square kilometers (84,000,000 acres) of high-resolution imagery and 75,000 sq-km of high resolution DEM (elevation) data is available through Alaska Mapped. These data, much of it contributed by federal sources, represents more than $10 million in Federal funds leveraged by the SDMI program.

2015年5月14日 · Alaska’s existing Digital Elevation Models (DEM) are of uneven quality. Many areas have significant accuracy problems, not meeting even DTED-2 standards (LE90 < 18-meters). The National Elevation Database (NED) for Alaska is mostly a 1-arcsecond product (~30 x 60-m post spacing product) created by digitizing contour maps generated from often ...

2006年3月23日 · The creation of radiometric terrain corrected (RTC) products was a project of the Alaska Satellite Facility to make SAR data accessible to a broader community of users. RTC removes the geometric and radiometric distortions inherent in synthetic aperture radar (SAR) and the corrected PALSAR data are provided in a GIS-compatible GeoTIFF format.

2024年7月6日 · This is a tiled collection of the 3D Elevation Program (3DEP) and is 2 arc-second (approximately 60 m) resolution covering Alaska. The elevations in this Digital Elevation Model (DEM) represent the topographic bare-earth surface.

2009年12月15日 · The Alaska Mapped online map allows user to view, search, and download airborne and satellite imagery and digital elevation model data (DEM). Landsat, scanned USGS topographic maps (digital raster graphics - DRG) and NOAA navigational charts are …

Distributable DEM products include: 2 arc-second (in Alaska only); 1 arc-second; 1/3 arc-second; 1/9 arc-second; 5 meter (in Alaska only); and 1 meter. The 2-, 1-, and 1/3-arc-second products are staged for download in 1x1 degree tiles in ArcGrid, GridFloat, or IMG formats, while 1/9 arc-second products are staged in 15x15 minute tiles in IMG ...