SRTM | X Band

SRTM | X Band

Provider: DLR (Germen Aerospace Center), ASI (Italian Space Agency)
Mission Date: February 11–22, 2000
Instrument: X-band Interferometric Synthetic Aperture Radar (InSAR)

Specification

Coverage Area : Partial coverage: Europe, Middle East, parts of Asia, North Africa, and selected global sites (~50 million km²)

Spatial Resolution : 1 arc-second (~30 meters at the equator)

Vertical Accuracy : ±6 -10 m (relative), varies by terrain/vegetation

Horizontal Datum : WGS 84 (EPSG:4326)

Vertical Datum : EGM96 geoid

File Format : GeoTIFF

Tile Size : 1° x 1°

Elevation Units : Meters above mean sea level

Data Type : 16-bit signed integer

Acquisition Method : Interferometric SAR via dual antennas on Shuttle Endeavour

Data Voids : Less common than C-band due to shorter wavelength, but coverage is limited

Access / Licensing : Restricted. Freely available in some regions (e.g., via DLR’s WorldDEM Core), otherwise under license