In large scale mapping, the more commonly used method is manual measurement or aerial photogrammetry. These methods either have a large workload in the field (inefficient), or have low measurement accuracy, and require a large number of ground control points. For some vegetation or unmanned areas, setting up control is often impossible. In constast, the airborne LiDAR technology integrated the core measurement unit airborne laser scanner, positioning attitude system POS and aerial digital camera, can be implemented and achieve a high precision survey without ground control points. Moreover, airborne LiDAR use an active measurement method that is largely immune to weather, have high measurement efficiency, and be able to produce various products (including DSM, DEM, DOM, DLG, and real 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.