Traditionally, open-cut excavation volumes were calculated by topographic field survey, either through total station or RTK GPS survey. In some cases, aerial photogrammetry has been used. Where there is dual interest in the volume such as vendor and the client, both parties would do their own survey and volumes computed via before and after DTM differences.
U-Arm is a 3D terristrial laser scanner that is independetly developed by SureStar. It is able to acquire high-precision 3D data with a maximum range of 3600m, fully meeting the requirement of a mid-long range scan. It can be used for topographic surveying, enginering survey, deformation monitoring and vegetation survey. The equipped self-developed software UIUA can assist in the collection and processing of massive point cloud data.