What is ASTER elevation?

What is ASTER elevation?

The Terra Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Global Digital Elevation Model (GDEM) Version 3 (ASTGTM) provides a global digital elevation model (DEM) of land areas on Earth at a spatial resolution of 1 arc second (approximately 30 meter horizontal posting at the equator).

What is the spatial resolution of ASTER DEM?

15 meters
The spatial resolution is 15 meters (m) in the horizontal plane. Each scene consists of 4,100 samples by 4,200 lines which corresponds to about 60 kilometers (km) by 60 km ground area.

What is ASTER DEM GIS?

The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) is a Japanese sensor which is one of five remote sensory devices on board the Terra satellite launched into Earth orbit by NASA in 1999. The instrument has been collecting data since February 2000.

How do you get ASTER DEM data?

1. ASTER Global Digital Elevation Map Announcement.
2. The GDEM and ASTWBD are available for download from NASA Earthdata and Japan Space Systems.
3. This ASTER product is available at no charge for any user pursuant to an agreement between METI and NASA.

What type of sensor is ASTER?

ASTER Satellite Sensor (15m) ASTER is a 15-meter, 14 band multispectral resolution instrument. It can be used for land cover and change detection, calibration, validation, and land surface studies.

Who is Aster Group?

Aster Group is a not-for-dividend developer and landlord which is regulated by the Regulator of Social Housing. Our governance framework is structured on the UK Corporate Governance Code.

When was the aster Digital Elevation Model ( DEM ) implemented?

The current ASTER Digital Elevation Model (DEM) product was implemented using new production software at the Land Processes DAAC starting on May 24, 2006. This is the final validated version of the DEM product derived using bands 3N and 3B from an ASTER Level-1A data set.

Which is the latest version of the ASTER GDEM?

Version 3 of the ASTER Global Digital Elevation Model (GDEM) provides new features and sharper imagery. Version 3 of the Advanced Spaceborne Thermal Emission and Reflection Radiometer ( ASTER) Global Digital Elevation Model ( GDEM) is now available from NASA’s Land Processes Distributed Active Archive Center ( LP DAAC ).

How does digital elevation work on Aster L1b?

The updated software provides digital elevation extraction and orthorectification from ASTER L1B input data without needing to enter ground control points or depending on external global DEMs at 30-arc-second resolution (GTOPO30). It utilizes the ephemeris and attitude data derived from both the ASTER instrument and the Terra spacecraft platform.

Where can I download aster global elevation map?

Each GDEM tile has a corresponding Water Body tile. The GDEM and ASTWBD are available for download from NASA Earthdata and Japan Space Systems . This ASTER product is available at no charge for any user pursuant to an agreement between METI and NASA.