IABG has many years of experience in recording, analysing, interpreting and integrating remote sensing data. State-of-the-art and forward-looking systems are used.
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Orthophoto and digital
terrain model
Satellites
IABG obtains and uses high-resolution satellite data (e.g. Ikonos, Quickbird, Spot) to generate terrain models, make classifications, generate orthophotos or carry out photogrammetric measurements.
- HRSC
IABG uses high-resolution stereo cameras, like the HRSC-A system, to provide digital orthophotos and multispectral data (RGB + IR) as well as digital height models (grid size= 0.3m to 0.8m) in a short period of time. The resolution of this camera is 15cm in location and height.
- LIDAR
A particularly economical method for creating digital terrain models is use air-supported laserscan technology (LIDAR). The accuracy of the height measurement is under 10cm (with a grid size of 1m).
- HyMap
Hyperspectral scanners such as the System HyMap with 128 spectral channels provides highly differentiated information , for example, on the surface of the terrain, geology, mineral content in the ground, water properties and vegetation.
- Radar
Weather-independent flights over regions and stretches of water with aeroplane-supported Interferomatetric Satellite Aperture Radar (InSAR). The collection of data for processing customer and project-specific tasks occurs in various polarisations and frequencies, e.g. in the P, L, C and/or X bands. The computer-supported reviewing of the SAR and InSAR raw data enables the production of geocoded SAR orthophotos and digital surface models, height models and/or terrain models. The microwaves in the P band frequency range penetrate the vegetation, meaning the terrain surface (e.g. forest floor) is photographed.
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Aerial photo: Neumarkt in der
Oberpfalz
Aerial photo
Aerial photo surveying flights with an aeromobile, equipped with a Zeiss RMK aerial camera with various focal lengths, film types (b/w, colour, CIR) and image scales, allow photogrammetic evaluations down to the centimetre and the creation of orthophotos and orthophoto maps. The analysis of historical aerial photos taken in different flight years and the comparison of these aerial photos with each other and with current photo data facilitates the logging of structural changes, the mapping of bomb craters and the marking of contamination sites in a so-called multi-temporal aerial photo analysis.
- Geophysics
Geophysics is the branch of science concerned with investigating the physical properties of the earth. Geophysical engineering measuring methods use these properties and parameters, e.g. the magnetic field, electrical field, field of gravity as well as geological and morphological characteristics of the subsoil.
The methods used by IABG are:
- Geom agnetics
- Electromagnetics (EM)
- Georadar (EMR Electromagnetic Reflexion or GPR Ground Penetrating Radar)
- Geoelectrics
- Seismism
- Grav imetry
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HyMap aerial flight:
Truppenübungsplatz Hohenfels
Aerogeophysics
Aerogeophysics involves the use of geophysical measurements with aeroplanes or helicopters. RMK aerial cameras for aerial or surveying flights, a multispectral scanner or geophysical probes can be installed to measure the earth’s magnetic field and its components. With the HM3 system (Helicopter Mounted Magnetic Measurement System), which is mounted directly on the helicopter, IABG can detect concealed pipelines, poisonous waste and munitions (UXO) in large areas in cost- and time-efficient manner. IABG successfully implemented this system in a research project funded by the BMBF (Federal Ministry of Education and Research).
- Data Collection
Archive enquiries, procurement of historical or up-to-date aerial and satellite pictures and statistical and demographic data (e.g. population density) round off IABG’s range of geodata services.
- Digital Image Processing
Digital terrain information from scanned aerial photos, laser or radar measurements, high-resolution cameras or multi/hyperspectral photographs can be analysed and classified in a computer-aided manner with special evaluation systems such as ERDAS Imagine or ENVI. The linking of classification results with other information, e.g. the slope of the land, soil moisture measurements, etc., enable further knowledge to be acquired.
- Transfer of data to GIS
The data collected in the named measures is integrated, processed and represented in GIS or CAD systems. Linking and intersecting with other layers of information as well as the use of special GIS modules (e.g. 3D Spatial Analyst) allows numerous types of analyses and representations.
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