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SpatialNews.com Press Release
Infoterra Completes Height Data Capture of London
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Infoterra, a world leader in the provision of geographic information products and services, today announces the availability of new elevation data of the City of London and the surrounding areas out to the M25.
Infoterra’s London Heights data was captured during Summer 2005 so the full extent of vegetation cover has been acquired. “Collecting data during the summer ensures accurate foliage detail is captured which is crucial for environmental programmes, ‘line of sight’ analysis and subsidence risk assessment,” explains Dr. Andy Wells, marketing director, Infoterra Ltd.
Infoterra captured height information of London using advanced lidar technology (an Optech ALTM2033 sensor) to produce a comprehensive data set at 1m horizontal intervals with a vertical accuracy of +/-15 cm. Acquiring first point and last point enabled the capture of both tree height and the level of the ground beneath the canopy. This information therefore provides both a feature rich digital elevation model (DEM) and base earth digital terrain model (DTM).
An increasing number of business applications, from civil contingency planning to property management, need highly accurate height data.
Flood assessment – to create accurate tidal, storm surge and overland flood models to predict scale of risk
Subsidence assessment – subsidence risk can be determined at an individual property level by assessing the relationship of the tree height and canopy size with the building structure
Emergency services – to improve response times through accurate knowledge of both terrain and the built-up environment
Telecommunications – height data of buildings and vegetation is vital for network design, implementation and improvement
Dr. Andy Wells comments, “The data Infoterra has captured is already being actively used throughout a range of applications. Accurate height information, for example, enables the creation of flood assessment maps. This is particularly important as it has already been stated that a flood of London would cost $60 billion to clean up* ”.
Lidar ** (laserscanning) is the ideal aerial technology to capture detailed elevation data without having to access the survey area. Lidar data is well established within the surveying world and has been rapidly accepted across markets as a key information dataset.
About Infoterra Ltd.
Infoterra Ltd. is a world leader in the provision of geographic information products and services. Its portfolio of geographic information solutions includes airborne and satellite data acquisition, geo-information creation, database management and outsourced hosting. Infoterra provides geospatial knowledge to companies worldwide to help them make informed decisions. The company has clients in communications, utilities, engineering, agriculture, defence and oil, gas & mineral exploration. Infoterra is a wholly owned subsidiary of EADS Astrium.
www.infoterra-global.com
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