Abstract
Digital terrain model is applicable for many possibilities related to aerial works by use of photogrammetry or laser scanning of the earth’s surface. For the purpose of this research we consider just laser scanning used for work in difficult mountain terrain. The terrain of the Slovak Republic has many high hills and it signifies more complex flight planning, as laser scanning is usually flown in lower heights than photogrammetry. Moreover, as lower height is above terrain than the overlap between subsequent LIDAR strips is also lower. This situation can also lead towards the negative value in extreme instances. This paper also describes the most effective way for flight planning during laser scanning of mountain terrain by comparison of two different technologies from operational and economical point of view.
Highlights
Optimisation process plays key role in any industry in order to find the most sufficient way to save costs and simplify the work process
As was mentioned above, laser scanning process is executed at a relatively low flight level compared to the photogrammetry mainly due to the LIDAR’s low range and due to low level of radiant energy
Whereas the flights are made in low flight levels, it brings some kind of problems linked with overlaps adjacent LIDAR strips
Summary
Optimisation process plays key role in any industry in order to find the most sufficient way to save costs and simplify the work process. Laser scanning is a method used for determination the spatial position of a large number of points on the Earth, such as buildings or vegetation. The result of points collection creates so called the point cloud that makes conditions for generation of needed digital terrain models in high definition resolution that cover all considerable detail. As was mentioned above, laser scanning process is executed at a relatively low flight level compared to the photogrammetry mainly due to the LIDAR’s low range and due to low level of radiant energy. Whereas the flights are made in low flight levels, it brings some kind of problems linked with overlaps adjacent LIDAR strips. As the altitude terrains is greater, the greater strips overlap has to be done
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