Easy Aerial research in the payload area is divided into two main activities: (1) Buying and trying new cameras and payload in order to find the ideal options for every job and service; (2) Developing our own payloads – currently affordable low-resolution thermal cameras and gas-sniffers.
Types of payloads we are testing:
Drones are a perfect tool for mapping. Repeatable, accurate flight makes a drone the ideal flight platform for ground mapping. The combination of today’s high resolution cameras and flying robots enables mapping at a level of detail never before imagined. Easy Aerial XL pro combined with a Sony QX1 or Sony Alpha 6000 camera is the ultimate candidate for accurate affordable mapping. It can be done in 2D or as a 3D model of the terrain.
The addition of RTK technology enables Easy Aerial to provide maps that are accurate to less than 1 cm both in 2D and 3D models.
Thermal imaging, also referred as thermography, IR, thermal scanning and infrared imaging. Thermal imaging observes temperature anomalies that are abnormal in electrical equipment, machinery, woods, fiberglass, steel and aluminum.
Comparing different thermal cameras
|EAF||FLIR DUO||FLIR FUO R||FLIR VUE PRO 336||FLIR VUE PRO 640|
|Weight||60 g||85 g||90 g||92-114 gr||92-114 gr|
|Thermal resolution||160 x 120||160 x 120||160 x 120||336 x 256||640 x 512|
|RGB resolution||640 x 480||1920 x 1080||1920 x 1080|
|Display technology||side-by-side (split screen)||Fusion||Fusion|| Thermal
|Lans||13 mm||13 mm|
|FOV||57° x 44°||57° x 44°||45° x 37°||25° x 19°|
NDVI imaging – Mapir NDVI,
Gas Laser detect systems – Crowncon LMm-G,
Gas Sniffers –
NDIR sensor – A nondispersive infrared sensor (or NDIR sensor) is a simple spectroscopic sensor often used as a gas detector. It is nondispersive in the sense of optical dispersion since the infrared energy is allowed to pass through the atmospheric sampling chamber without deformation. The main components of an NDIR sensor are an infrared source (lamp), a sample chamber or light tube, a light filter and an infrared detector. The IR light is directed through the sample chamber towards the detector. In parallel there is another chamber with an enclosed reference gas, typically nitrogen. The gas in the sample chamber causes absorption of specific wavelengths according to the Beer–Lambert law, and the attenuation of these wavelengths is measured by the detector to determine the gas concentration. The detector has an optical filter in front of it that eliminates all light except the wavelength that the selected gas molecules can absorb.
The normalized difference vegetation index (NDVI) is a simple graphical indicator that can be used to analyze remote sensing measurements and assess whether the target being observed contains live green vegetation or not. Live green plants absorb solar radiation in the photosynthetically active radiation (PAR) spectral region, which they use as a source of energy in the process of photosynthesis. Leaf cells have also evolved to re-emit solar radiation in the near-infrared spectral region (which carries approximately half of the total incoming solar energy), because the photon energy at wavelengths longer than about 700 nanometers is not large enough to synthesize organic molecules. A strong absorption at these wavelengths would only result in overheating the plant and possibly damaging the tissues. Hence, live green plants appear relatively dark in the PAR and relatively bright in the near-infrared. By contrast, clouds and snow tend to be rather bright in the red (as well as other visible wavelengths) and quite dark in the near-infrared. The pigment in plant leaves, chlorophyll, strongly absorbs visible light (from 0.4 to 0.7 µm) for use in photosynthesis. The cell structure of the leaves, on the other hand, strongly reflects near-infrared light (from 0.7 to 1.1 µm). The more leaves a plant has, the more these wavelengths of light are affected, respectively. The NDVI is calculated from these individual measurements as follows:
where VIS and NIR stand for the spectral reflectance measurements acquired in the visible (red) and near-infrared regions, respectively. These spectral reflectances are themselves ratios of the reflected over the incoming radiation in each spectral band individually, hence they take on values between 0.0 and 1.0. By design, the NDVI itself thus varies between -1.0 and +1.0.