NASA Shuttle Radar Topography Mission (SRTM)

The Shuttle Radar Topography Mission (SRTM), launched aboard NASA's Space Shuttle Endeavour in February 2000, was a pioneering endeavour that produced the first near-global, high-resolution digital elevation model of Earth's surface. By employing interferometric synthetic aperture radar (InSAR) technology, this mission successfully mapped approximately 80% of the planet's landmass, covering latitudes between 60° North and 56° South.

Key features and benefits:

• High-resolution data: Captured elevation data at a 30-metre resolution, providing detailed topographic information.

• Near-global coverage: Encompassed the majority of Earth's land surfaces, facilitating comprehensive geographical analyses.

• Interferometric radar technology: Utilised dual radar antennas to achieve precise elevation measurements through single-pass interferometry.

• Open data access: The resulting digital elevation models (DEMs) are publicly available, supporting a wide range of applications.

Applications across scientific fields:

• Geology and geophysics: Facilitates the study of Earth's structural features and tectonic activity.

• Hydrology: Enhances flood modelling and watershed management through accurate terrain data.

• Environmental science: Supports ecosystem analysis and conservation planning.

• Urban planning: Aids in infrastructure development and land-use planning.

Commonly utilised by:

• Academic institutions: Universities and research centres for educational and investigative purposes.

• Government agencies: Organisations involved in environmental monitoring, disaster management, and infrastructure development.

• Private sector: Companies in sectors such as telecommunications, agriculture, and urban development.

While the SRTM mission concluded in 2000, its data remains a cornerstone in topographic analysis and continues to be widely used in various scientific and practical applications.