ALS is a direct remote sensing system which permits accurate elevation measurements for a precise and easy terrain modelling. Laser sensors are able to measure a huge quantity of points in a short time. The characteristics of the point cloud will depend on our client requirements and the terrain complexity.           

Hifsa is the STEREOCARTO's company specialized in photogrammetric flights with flight licence for photographic jobs issued by the Spanish Civil Aviation Authority (Spanish Ministry of Public Works).     

STEREOCARTO has three RMK Top 15 de Zeiss analog photogrammetric cameras with focal distances of 150 mm and 300 mm; and a photograph format of 23 cm x 23 cm. They are still used for specific projects combined with modern technologies, such as inertial GPS systems.       

A photogrammetric digital camera is an instrument that allows, through an electronic image sensor (a set of CCD's), to obtain metric digital images directly.STEREOCARTO has the technical means to capture and process photogrammetric data.

In particular STEREOCARTO has these large-format digital cameras:
- Leica ADS40 SH52 Sensor
- DMC Intergraph  

STEREOCARTO has one of the most powerful scanners in the sector: DSW700. It is a high-performance photogrammetric scanner which is able to half the scanning-process time as well as to reduce the manipulation time for each photogram. It also allows a higher geometric and radiometric quality. 

STEREOCARTO has a Leica terrestrial scanner. Its main product of this technology is an accurate point cloud which can be exported into different formats such as those of Autocad (2D and 3D), Microstation (2D and 3D), PACE, PDMS, PDS, etc. 

Images taken with the terrestrial photogrammetric camera can be oriented in the same way than images from aerial cameras. This is an efficient technique to obtain two and three-dimensional terrain representations. The main applications can be found in the urban sector, specially in facades, bridges and monuments surveying.