In airborne mode, the recent application of the Lidar technology (Light Detection and Ranging) to topography and mapping provide high density digital terrain models (MNT) or surface (MNS) with great efficiency.
Lidar remote sensing is the only technique capable of simultaneously detecting the surface of the ground and vegetation. It then provides a DTM of the soil and a DSM of the canopy. A density of several points per m² is accessible.
This non-intrusive technique is particularly suitable for topographical surveys of heavily forested areas, uneven or difficult to access.
This technology coupled with decades of production and innovation in photogrammetry has allowed us to acquire skills from acquisition to topographic drawings or high density 3D digital models.
A high resolution stereoscopic photographic coverage may be associated with the lidar survey to provide orthophoto.
APEI has a two Leica sensor which provide LiDAR data: CityMapper 2 with Hyperion 2+ and TerrainMapper 2 with Hyperion 2. These sensorscan be installed on all airplanes. This gives us high availability and rapid implementation, in France or abroad.
To read more about our CityMapper 2
To read more about our TerrainMapper 2
Deliverables : DTM / DSM / Contours / profiles / intensity images …
This technology is applicable to different types of needs:
Our experience in aerial acquisition, in aerospace and imaging allow us to offer related services to help you optimize your project:
Contact us for a personalized solution to your needs.
Practical training of Tunisian camera operators (2 OTC technicians and 2 CNCT techicians ) took place in September 2011 in our facility.
To meet your specifications, we can use at least 3 digital cameras. We operate our digital cameras since 2004 and we are a service provider recognized for our quality and rigorousness.
We use the Leica software suite for preparing flight plans. This is an essential phase for the effective respect of your requirements. Indeed, our MissionPro software integrates a highly accurate digital terrain model which adapts flight lines regardless of the state of the relief: The sidelap and along track overlaps and the GSD are respected everywhere in the area.
All cameras are installed on gyrostabilized platforms which continuously compensate the aircraft movements to maintain the verticality of the camera.
For the trajectory, our cameras are equipped with inertial high resolution coupled with dual frequency GNSS receiver. The combination of these data allows us to position each image in space (X, Y, Z, Phi, Omega, Kappa) with a relative accuracy of 10cm.
The vertical aerial images are mainly used for orthophoto production and photogrammetric maps, but are also commonly used for communication or to create virtual 3D models (see Applications).
Local communities are no longer limited to the vision in 2D and require more and more 3D modeling of urban areas. This modeling can be done in two ways:
These photogrammetric cameras allows the building facades texturing with a high precision draping.
You have your own a sensor, lidar or any other system but you do not have an airplane equipped with a hatch …
APEI can provide you with one of the 8 aircrafts of our fleet as well as an experienced professionnal pilot.
Do not hesitate to contact us and we'll offer the appropriate aircraft for your particular project according to your budget and technical constraints ( flying altitude, acquisition speed, regulatory requirements, system dimensions, power consumption of your equipment …)