The upsurge in the use of sensors installed in pilot-less devices, known as drones, to acquire aerial images has given new life to photogrammetric applications. It was not so long ago that these applications were reserved for specialists who had mastered the mathematical principles of camera modelling, image block aerotriangulation and geometric correction.
Using two SENTINEL-1A radar images acquired on March 27 and April 20, 2016, and differential interferometry (DInSAR), the Effigis Earth Observation team measured the ground displacement that took place following this earthquake.
High-resolution satellite images acquired in urgent mode can be used to plan and manage interventions during a natural disaster (forest fire, earthquake, flood).
Using Landsat 7 and 8 satellite images, we see the extent of the natural disaster that has been raging since May 1, 2016 at Fort McMurray (Alberta).
Landsat-7 and 8 satellite images allow to see the extent of this natural disaster.
Precision Agriculture: Moving to “Customized” Nitrogen Fertilization in Order to Maximize Economic and Environmental Gains
By wanting to avoid performance loss due to nitrogen deficiencies, current practices favour overfertilization, which leads to unnecessary costs as well as serious environmental problems.
Using radar interferometry, a technique used to target displacements to the nearest centimetre, Effigis’ Earth Observation Team tried to determine whether the impact of the earthquake could be measured.
On May 23, 2015, the highest volcano in the Galapagos Islands, Wolf Volcano, erupted for the first time in 33 years. Using satellite imagery and radar interferometry, our team tried to determine whether the soil had moved specifically due to this eruption.
There are many risks inherent to each steps of a mine lifecycle, and they are all quite different from one another. How can we better manage and especially evaluate these risks?
It’s true that it does not easily spring to mind that the images captured by Earth observation satellites, nowadays with submetric spatial resolution at best, can produce displacement measurements with a precision measured in centimetres or millimetres, as the experts claim. But what exactly does this involve?