DATA ACQUISITION / EQUIPMENTS
Aerial acquisitions as part of an infrared thermography of the roofs of a territory are carried out with a minimum spatial accuracy of 30 to 50 cm and a thermal accuracy closest to the nominal capacity of our sensors: (+ /– 20 Milli Kelvins).
Our on-board means are thermo-sensor-type, self-calibrated quantum infrared spectrometers. The advantage of having this type of imager is that it can work simultaneously in pushbroom mode and in snapshot mode.
Therefore thermal images have excellent resolution which would not be the case with the user of a scanner-type sensor, interesting in cost terms, but resulting in a phenomenon of "image shear" requiring a disconnection by recovery algorithms, and especially to have a thermal sensitivity 5 times greater than an optomechanical type scanner (0.02 °C versus 0.1 °C).
The thermography must be performed at a relatively low altitude, with direct control of the infrared shots. This makes it possible to obtain documents of high quality, with a good distinction of losses, building by building.
The flyover of a territory is systematically carried out in such a way as to take account of the phenomena of thermal inertia of the materials and in compliance with the timetables during which the demand for heating is the greatest.