OK-VOMCessna 402B
Twin-engine workhorse for photogrammetry over large areas.
- Cruise speed
- ~370 km/h
- Range
- ~2 000 km
- Speciality
- Two camera ports. Two technologies
Technology
OUR
FACILITIES.
Four aircraft, top-end UltraCam and Leica aerial cameras, Riegl LiDAR, mobile mapping and an autonomous survey vessel. Full technical facilities for the whole fleet in our own hangar in Karlovy Vary.
4
aircraft
6
cameras
1
airborne LiDAR
1
mobile mapping
Aircraft fleet
Four aircraft. One mission.
Single-engine and twin-engine aircraft cover every scenario – from short detailed jobs to high-altitude nationwide mapping.
OK-VOM
Pressurised cabinOK-VOKCessna 421 Golden Eagle
High-altitude flights with a pressurised cabin.
- Cruise speed
- ~430 km/h
- Range
- ~2 700 km
- Speciality
- Maximum flight altitude 9 km
OK-VONCessna T206H
Single-engine turbocharged.
- Cruise speed
- ~300 km/h
- Range
- ~1 300 km
- Speciality
- Unpaved runways
OK-VOZVulcanAir P.68
Italian twin-engine observer.
- Cruise speed
- ~300 km/h
- Range
- ~2 000 km
- Speciality
- Minimum speed 106 km/h
Aerial cameras
A wide range of systems.
The right format for every project – from large-area nationwide maps to local detailed photography. GSD from 3 cm.
NewUltraCam Merlin 5.0
Extreme swath width – a giant sensor with 37 500 pixels for by far the fastest nationwide and area-wide mapping.
- Footprint
- 37 500 x 19 000 px
- Spectral bands
- RGB + NIR
- Typical project
- Area-wide and nationwide mapping
- Ground coverage
- 1875 x 950 m at 5 cm GSD
UpgradeUltraCam Osprey 4.2
A five-camera hybrid – 1× nadir + 4× oblique imagery at 45° for 3D city models.
- Footprint (nadir)
- 25 024 x 19 008 px
- Footprint (oblique)
- 4x 12 736 x 19 136 px
- Spectral bands
- Nadir (RGB + NIR), Oblique (RGB)
- Typical project
- 3D city models and digital twins
WorkhorseUltraCam Eagle M3
A versatile all-rounder for topography and corridor mapping from any altitude.
- Footprint
- 26 460 × 17 004 px
- Spectral bands
- RGB + NIR
- Typical project
- Infrastructure and corridor mapping
- Ground coverage
- 1323 x 850 m at 5 cm GSD
Leica DMC III
Monolithic precision – a five-head CMOS sensor for projects that need a high dynamic range and compatibility with the Leica system.
- Footprint
- 25 728 x 14 592 px
- Spectral bands
- RGB + NIR
- Ground coverage
- 1286 x 730 m at 5 cm GSD
- Typical project
- Mapping with an extreme dynamic range
Comparison
Two routes, two technologies
The Osprey captures the scene from 5 angles in a single exposure. Merlin/Eagle/DMC III compete on sensor size.
Oblique
5 angles · 1 exposure
Nadir + 4 oblique (forward / back / left / right). For 3D city models and facades.
Oblique ViewerNadir
1 875 × 950 mUltraCam Merlin 5.0
37 500 × 19 000 px
1 323 × 850 mUltraCam Eagle M3
26 460 × 17 004 px
1 286 × 730 m
Leica DMC III
25 728 × 14 592 px
A larger sensor = a larger area covered in one exposure at the same GSD. Fewer flights, faster production.
Airborne laser scanning (ALS)
3D capture from the air.
Airborne LiDAR combined with metric cameras – a 3D point cloud and reference imagery in a single flight.
Riegl VQ-1460 + 2× Phase One
Airborne laser scanner combined with metric cameras – a 4.4MHz LiDAR with enormous area throughput for precise terrain models beneath vegetation and highly detailed city models.
- Measurement rate
- up to 4.4 MHz
- Operating range (flight altitude)
- up to 5 600 m AGL
- Field of view (FOV)
- 60°
- Point density
- from 4 points/m² to more than 50 points/m²
Typical projects
- Area-wide digital terrain models (DTM) under forest cover
- Wide-area 3D mapping and nationwide scanning
- Highly detailed 3D models of urban agglomerations
- Mapping of extensive infrastructure corridors
Mobile mapping system (MMS)
3D capture from the ground.
Ground-based LiDAR with a 360° range and a panoramic camera – ideal for corridors and densely built-up areas where an aerial view simply is not enough.
RIEGL VMX-2HA + Ladybug 5
Mobile giant – a car fitted with a pair of 1.8MHz laser scanners and a spherical camera for real-time 360° mapping while driving.
- Footprint
- 360° LiDAR coverage + 360° spherical imagery
- Point density
- Up to 13 750 pts/m²
- Measurement rate
- Up to 3.6 million measurements per second
- Range
- Up to 475 m
Typical projects
- Road surface analysis (including detection of cracks and joints)
- GIS asset management of municipal property
- Detailed models of the street space and building facades
- As-built surveys of roads, motorways and railways
- Clearance profile analysis
Surveying on water (USV)
3D capture below the surface.
The autonomous vessel adds a third perspective to our airborne and ground-based equipment – we collect spatial data from the air, from the ground and below the water surface.
CHCNAV Apache 4 Pro
Autonomous unmanned surface vessel (USV) with an echo sounder and GNSS RTK. It maps the bed of reservoirs, ponds and watercourses systematically along planned profiles – faster, more safely and with better repeatability than surveying from a boat.
- Echo sounder
- single-beam 200 kHz, 0.1–200 m
- Depth accuracy
- ±(1 cm + 0.1 % of depth)
- Positioning
- GNSS RTK + IMU
- Draught
- 8.6 cm
- Endurance
- up to 9.8 h under way
- Hull
- carbon fibre, 120 × 75 cm, 12 kg
Typical projects
- Bathymetry of reservoirs and ponds
- Sediment thickness and volumes
- Data for restoration projects and hydraulic calculations
- Capacity of water bodies and hydraulic structures
- Watercourse profiles
Analogue imagery
Digitisation of archive imagery
Using a photogrammetric scanner we digitise your archive aerial imagery and turn it into digital aerial photogrammetry products.
Leica DSW 700V
High-precision photogrammetric scanner for digitising archive aerial imagery.
- Geometric resolution
- 0.5 µm
- Geometric accuracy
- < 1.5 µm rmse
- Scanning format
- > 260 × 260 mm
- Optical resolution
- 3–12.5 µm
- Sensor
- 7 900 × 6 000 px (CMOS)
- Maximum film length
- 152 m (500 ft)
Typical projects
- Archive aerial imagery
- Stereo compilation
- Historical analyses
Other equipment
Further equipment and facilities.
For targeted additional survey, inspections and detailed documentation, the main systems are complemented by further equipment – from drones (unmanned aerial vehicles, UAVs) to total stations. The fleet is based in our own hangar.
Drones
Unmanned aerial vehicle (UAV) platforms for rapid campaigns, hard-to-reach locations and inspections.
DJI Matrice · Wingtra
Static laser scanners
Terrestrial LiDAR for detailed 3D documentation of interiors, facades and civil engineering structures.
Leica RTC360 · Riegl VZ-2000i
Surveying instruments
Professional survey equipment for centimetre-level ground surveys and setting out.
Trimble (including Trimble One) · Leica · GNSS rovers · total stations
Our own hangar
Karlovy Vary, final building approval December 2025.
Full technical facilities for the entire fleet – maintenance, sensor calibration and dispatch to projects.
Software & partnerships
Processing in top-end software.
We process the collected data in professional photogrammetric, CAD and GIS platforms – both partner platforms and our own in-house development.
Member of the Esri Partner Network
We build geoportals on the ArcGIS platform, develop extensions for it and integrate it with our own applications – from desktop to web.
ESRI Partner- ArcGIS / Esri
A GIS platform for managing, analysing and publishing spatial data.
- QGIS
Open-source GIS – deployment and extension development.
- Spirit Cloud & Spirit DTI
GIS applications developed in-house by GEOREAL.
- Bentley MicroStation & ContextCapture
CAD processing and reality modelling.
- Trimble Inpho
Photogrammetric processing of aerial imagery.
- ERDAS Imagine
Raster data processing and remote sensing.
- Leica Photogrammetry Suite
A photogrammetric production suite.
- BAE Systems SOCET GXP
A photogrammetric production platform.
Looking for a specific solution built on one of our technologies?