Aerial photogrammetric surveying and mapping

aerialGeosan extended its business to the field of aerial photogrammetric surveying and mapping since 2011. The company owns and operates Vexcel Imaging’s Microsoft UltraCamXp Wide Angle digital camera.

This state-of-the-art aerial photogrammetric camera provides high-resolution digital imagery acquisition capabilities and enables the Geosan team to fulfill a wide range of its clients’ needs. The camera is electronically controlled by the operator and its captured images are transmitted simultaneously to the cabin monitor as well as to ground stations, has a modular design and is currently installed in the Cessna Grand Caravan aircraft.

UltraCam-XP Wide Angle camera system is the largest digital aerial frame camera and a product of the most successful digital aerial camera series worldwide. It is produced by Vexcel Imaging, a Microsoft’s company, in Graz Austria. It has an advantage in delivering same ground sample distance (GSD) at lower flight altitudes, providing small-scale mapping capabilities for customers with lower-flying airplanes.

Aerial photographs captured by the camera are processed with a software so-called UltraMap which is also Vexcel Imaging’s product and a part of the camera system.

Geosan is the first and only firm that employs a large-format digital aerial camera and that provides comprehensive aerial digital photogrammetry services in Mongolia.

Aircraft: Cessna Caravan 208B
Digital aerial mapping camera: UltraCamXp Wide Angle /Vexcel Corporation of Microsoft/ /Image size – 17310*11310 pixels, lens focal distance – 70mm
GPS/IMU and Flight Management System: POSTrack 510 V5 /Applanix Corporation of Trimble
Dual Frequency GPS receivers:   APS-3 /Altus Positioning System, USA/ – 4 units
Max. count rate: 1,000,000 per second
  • Ultra Map 2.3,
  • PosTrack 5.4 /Applanix Corporation of Trimble  GPS/IMU post-processing:
  • PosPac MMS /Applanix Corporation of Trimble  Image processing
  • Inpho of Trimble,
  • ArcGISArcGIS 9.3.1,
  • AutoCad .
  • Urban/rural planning and cadastral maps
  • Environment management and land-use verification
  • Quarry/mining landfill site – operations, volumetric analysis
  • Power line/pipeline planning and vegetation assessment
  • Emergency planning – hazard identification
  • Railways – embankment stability analysis, vector mapping
  • Roads and highways – noise mapping, vector data planning
  • Wind farms – site selection, planning strategy
  • Coastal survey – erosion risk mapping
  • Construction engineering– ground model generation, infrastructure planning
  • Hydrological survey – flood analysis
  • Surveys in areas of restricted access


Photogrammetric software:

Flight planning: PosTrack 5.4 /Applanix Corporation of Trimble/
GPS/IMU post-processing: PosPac MMS /Applanix Corporation of Trimble/
Image processing and Aerial triangulation :   Ultra Map 2.3 /Vexcel Corporation of Microsoft/
Stereo restitution: Summit Evolution 6.4 /DAT/EM Systems International/
DTM generation: Match-T 5.4 /Inpho of Trimble/
DTM editing: DTMaster 5.4 /Inpho of Trimble/
Contour line generation: SCOP++ 5.5 /Inpho of Trimble/
Contour line generation: SCOP++ 5.5 /Inpho of Trimble/
Orthophoto generation: OrthoMaster 5.4 /Inpho of Trimble/
Seam line editing: Seamline editor 4.6 /Inpho ofTrimble/
Ortho mosaicking and tiling: OrthoVista 4.6 /Inpho of Trimble/
Mapping: ArcGIS 9.3.1,  AutoCad