Hybrid lidar-imaging device for aerial surveying

A hybrid LiDAR-imaging device configured for aerial surveying of an overflown terrain comprising a camera arrangement configured for acquiring camera data adapted for generating orthophoto data, wherein:

• an overall exposure area is provided by the camera arrangement,
• the overall exposure area has a transverse extension defined as the extension along a direction which is foreseen to be the direction across a forward flying direction when the hybrid LiDAR-imaging device is installed to an aerial device, in the following called transverse direction, and
• the transverse extension is at least 60 mm,
• the hybrid LiDAR-imaging device comprises a LiDAR arrangement for generating LiDAR data, the LiDAR arrangement comprising at least a first LiDAR device,
• the first LiDAR device has a first longitudinal extension extending axially along a ground viewing nominal first LiDAR axis and a first lateral extension extending substantially orthogonal to the nominal first LiDAR axis, wherein the first longitudinal extension is larger than the first lateral extension,
• the LiDAR arrangement is configured to have a LiDAR scanning field of view along the transverse direction which substantially covers an imaging field of view of the camera arrangement along the transverse direction, wherein the LiDAR arrangement is adapted for a circular LiDAR scan,
• the camera arrangement and the LiDAR arrangement are mounted into a common housing, the common housing configured to be installed to the aerial device, and
• the hybrid LiDAR-imaging device is configured:
• to generate the camera data and the LiDAR data in a same measurement period, and
• to generate, based on positioning information of a positioning system, positional reference information for the camera data and the LiDAR data.