SRTM | C Band

SRTM | C Band

Provider: NASA / USGS
Mission Date: February 11–22, 2000
Instrument: C-band Interferometric Synthetic Aperture Radar (InSAR)

Specification

Coverage Area Global (between ~60°N to 56°S)

Spatial Resolution 3 arc-second (~90 meters at the equator) , 1 arc-second (~30 meters at the equator)

Vertical Accuracy ±16 m (absolute), ±6 m (relative); varies by terrain and vegetation

Horizontal Datum WGS 84 (EPSG:4326)

Vertical Datum EGM96 geoid

File Format GeoTIFF

Tile Size 1° x 1°

Depth/Elevation Units Meters above mean sea level (positive values only)

Data Type 16-bit signed integer

Acquisition Method Interferometric SAR using dual antennas aboard Space Shuttle Endeavour

Data Version : SRTM C Band 3 arc-second, SRTM Bandd 1 arc-second/SRTMGL1 v3 (global release,2014)

Data Voids Present in steep or heavily vegetated terrain (3 arc second) , Present in rugged terrain or dense vegetation (1 arc-second, mostly filled in V3 release )

Data Sources Raw radar interferometry from C-band (5.6 cm wavelength)

Access / Licensing Public domain, available via USGS EarthExplorer and NASA portals