In large scale mapping, the more commonly used methods are ground survey or aerial photogrammetry. These methods either have a high workloads or relatively low measurement accuracy thus requiring many ground control points. In the presence of dense vegetation or remote areas, setting up control is often impossible. In contrast, airborne LiDAR technology which integrates LiDAR, positioning and orientation systems (POS) and digital camera, can achieve a high accuracy without ground control points. Moreover, airborne LiDAR uses an active measurement method that is largely immune to weather and has high measurement efficiency. The resulting point cloud can produce many products including DSM, DEM, DOM, DLG, and 3D models). Therefore, airborne LiDAR has a bright future in large scale mapping.
SureStar uses the its own A-Pilot series of airborne 3D laser scanner and integrates with PORT AV610 (and domestic POS 2010) and Hasselblad SLR cameras of APPLANIX of Canada to form their airborne LiDAR integrates measurement system solutions and has been successfully applied to multiple terrain mapping projects.