Abstract:
LiDAR is an acronym for ‘Light Detection And Ranging’ and is a modern remote sensing and surveying technique using laser technology. LiDAR has been seen as a vital and accurate means to derive Digital Elevation Models (DEMs) as well as Digital Surface Models (DSMs) of the features on the surface. As such, LiDAR as such a practical technique over the last decades has been employed for the purposes of collecting a great deal of fairly accurate points in x, y, and z as high or low densely 3D points that are scanned using laser technology. Due to its capabilities, LiDAR has been used in a wide range of remote sensing, GIS, physical applications. As LiDAR provides elevations values in a large amount of points even for a large study area, traditional surveying approaches, such as photogrammetry and use of GPS unit as they are time consuming, therefore inefficient. LiDAR data is powerful as it can be converted to multipoints as a vector data model which can also be converted to raster data model forming DEMs or DSMs. With the help of interpolation, LiDAR data can be used as a product that contains all the elevation information in the study area. Given the vertical accuracy of LiDAR data, the traditional approaches could be avoided for efficiency and effectiveness.