Acquiring and processing satellite imagery from both commercial and open missions with free access. Satellite data can be effectively used for various analyzes covering very large areas.
Dozens of satellites acquire image data daily for the entire surface of the Earth. Field resolution (GSD) of this type of imaging allows you to perform many useful analyzes, such as determining the validity of other imagery available from a lower level.
A huge advantage, compared to data obtained “on order”, is access to resources including images from the past. Thanks to this, it is possible to analyze the occurrence of the phenomena visible on them, even if they took place many years earlier.
Most satellite imaging systems obtain multispectral images, including bands outside the visible light spectrum.
Available are, among others data from the range of ultra-blue, near-infrared, thermal and many others, thanks to which it is possible to thoroughly analyze the state of vegetation, monitor climate phenomena or automatically classify land cover.
Other satellite data
Technologies for acquiring and processing satellite data are constantly developed and improved.
Distributors of this data, in addition to raw images, also increasingly offer processed products (e.g. images with precise georeferencing, height models), enabling obtaining the desired information without the need for preliminary processing of source data.
The latest prosperous trend is radar imaging, enabling, among others obtaining extremely precise altitude data, e.g. for monitoring the displacement of larger objects.