Office for Outer Space Affairs
UN-SPIDER Knowledge Portal
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The UN-SPIDER Knowledge Portal is your one-stop platform for resources on space-based disaster risk management. It provides: • Links and guidance on satellite data sources and applications • Recommended practices and step-by-step methodologies • Training materials and tutorials • Case studies and user stories from real-world applications • News and updates on UN-SPIDER activities, events, and global developments
Since its last major review in 2012, the Portal has evolved significantly. Now, we want to hear from you.
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The training date is in the past. However, videos and resources of the training can be accessed here.
Synthetic Aperture Radar (SAR) data can be acquired day and night, even in cloudy conditions, providing a dense time-series suitable for trend analysis and change detection. Environmental applications for SAR data include:
forest inventory, biomass estimation and condition monitoring
emergency response to floods and landslides
habitat and crop mapping
soil moisture monitoring
offshore infrastructure and vessel monitoring
detection of pollution such as oil spills and illegal waste
The Joint Nature Conservation Committee (JNCC) is organising a series of online training sessions on understanding, accessing and using SAR data. The training will be delivered by Iain Woodhouse, Professor of Applied Earth Observation at the University of Edinburgh and author of Introduction to Microwave Remote Sensing.
The training consists of four sessions via Zoom and was conducted from 14:00 to 16:00 on 9, 11, 16 and 18 November 2020. It covered the following topics:
Brief history, fundamentals of EM waves, polarisation, combination of waves.
How microwaves interact with surface features, surface roughness, moisture content, vegetation.
How radar builds an image, data properties, unique challenges of radar, geometric distortions.
How to find data (EO Browser, Defra EO Data Service, CEDA Archive) and process data (e.g. SNAP Toolbox)