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What Is a Satellite Image Time Series?
A foundation for current and future global challenges
In a previous article, I discussed in detail everything you need to know about working with geospatial raster data. This type of data is associated with a specific geographical area. However, it’s not possible to study how that area has changed over time by analysing a single raster file. This guide aims to introduce the reader to satellite image time series and explain why this data is incredibly important in addressing current and future challenges facing the Earth.
Introduction
Satellite Image Time Series (SITS) is probably the most important resource for studying how a particular area has changed over time:
A SITS is a set of satellite images taken from the same area at different times.
Each image is stored as a geographic raster file. The images are also sorted by date so that they can be analysed sequentially. What is shown here is a SITS of a crop area:
