SRTM | NASA Earthdata
2000年2月11日 · The Shuttle Radar Topography Mission (SRTM) payload flew aboard the Space Shuttle Endeavour during the STS-99 mission. SRTM collected topographic data over nearly 80% of Earth's land surfaces, creating the first-ever near-global dataset of land elevations. The SRTM payload consisted of two radar antennas, one located in the shuttle's payload ...
Digital Elevation/Terrain Model (DEM) | NASA Earthdata
NASA's data for digital elevation models (DEM) comes from airborne and space-based sources and are useful for analyzing a majority of Earth's terrain. A digital elevation model (DEM) is a 3D graphic of the "bare earth" surface of land shown without trees, buildings or other objects. DEMs can be created using traditional topographic maps, modern ...
Bathymetry/Seafloor Topography | NASA Earthdata
Bathymetry/Seafloor Topography. Bathymetry/Seafloor Topography. The measurement and charting of the spatial variation of the ocean depths. Definition source: National Oceanic and Atmospheric Administration.
Synthetic Aperture Radar | NASA Earthdata
GMTSAR includes two main processors: 1. an InSAR processor that can focus and align stacks of images, maps topography into phase, conducts phase unwrapping, and forms complex interferograms, and 2. a postprocessor to filter the interferogram and create coherence, phase gradient, and line-of-sight displacement products. ERS-1/2.
Surface Water and Ocean Topography (SWOT) Swath Visualizer
Technology. Surface Water and Ocean Topography (SWOT) Swath Visualizer. The Surface Water and Ocean Topography (SWOT) Swath Visualizer provides a visualization of two instruments’ coverage of Earth's surface: the Ka-band Radar Interferometer (KaRIn) and altimeter. Users can search for places of interest to obtain swath information.
About GIS at NASA - Earthdata
A Geographic Information System (GIS) is a computer system that analyzes and displays geographically referenced information from a variety of data sources to map and examine changes on Earth. GIS allows for the integration and collective analysis of geospatial data from sources such as satellite imagery, GPS recordings, and textual attributes ...
Sea Surface Topography | NASA Earthdata
EarthdataForum. To measure sea surface height, or surface topography, scientists need to obtain the precise distance between the satellite and the center of the Earth and the precise distance between the satellite and the sea surface. Sea surface height is then calculated by subtracting the distance between the sea.
Global Digital Elevation Models now available: ASTER, GDEM
2023年12月7日 · The ASTER products were created from approximately 1.5 million scenes (ASTER stereo pair observations) dating back to 2000 and covers land surfaces between 83°N and 83°S. The SRTM product is based on Space Shuttle Endeavour's STS-99 mission in February 2000 using two radar antennas. Shown above is the ASTER GDEM Color Shaded …
Topography - Earthdata
2015年5月20日 · Topography Find Data. The general configuration of the land surface, including its relief and the position ...
SWODLR Integrated into Earthdata Search
2024年10月9日 · Originally developed by and available through NASA’s Physical Oceanography Distributed Active Archive Center (PO.DAAC), SWODLR is now integrated into NASA Earthdata Search. While Earthdata Search and SWODLR support similar use cases, features, and functionality, Earthdata Search has not previously supported the customization of SWOT Level …