Service

Satellite remote sensing and earth observation

Satellite imagery covers every site on earth, again and again, and much of it is free. I turn it into maps and numbers: what is on the land, how it is changing, and where water and vegetation are.

What you get

  • Land use and land cover maps, with the accuracy of each class stated.
  • Change detection between dates: new buildings, cleared vegetation, expanded farms.
  • Vegetation and crop condition through a season, from indices such as NDVI.
  • Flood and water mapping from Sentinel-1 radar, which sees through cloud.
  • Farm and plot checks for lenders: whether a farm exists, how large it is and whether it is planted.

Who it's for

Agric lenders and insurers, NGOs monitoring programmes, government agencies, researchers, and companies that need to watch many sites without visiting them.

How it works

  1. QuestionArea, dates and what you need to know
  2. ImagerySentinel-2 optical, Sentinel-1 radar or finer data
  3. ProcessGoogle Earth Engine or Python
  4. ValidateChecked against reference data
  5. DeliverMaps, statistics and the code

Questions clients ask

Can you work on sites outside Nigeria?

Yes. This work is done remotely, so the site can be anywhere satellite data covers.

What level of detail can I expect?

Free Sentinel-2 imagery has 10 m pixels and Sentinel-1 radar is similar. For smaller objects, high-resolution commercial imagery or a drone survey is the better choice, and I'll say so when we scope the work.

How do you check accuracy?

Against reference points from field data, high-resolution imagery or your own records. I report the result for each class.

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