Below is a video I created showing a couple of methods of importing aerial imagery into Civil 3D.
The first method uses normal AutoCAD attach commands and results in the user having to specify the insert point, scale and rotation manually afterwards. This can be time consuming if you have many image tiles.
The second approach uses Map 3D commands to import and will automatically read information from a world file if it exists for the image. World files are usually provided with aerial imagery obtained from a mapping agency such as the Ordnance Survey Ireland. The world files contain information that place the image at the correct location, scale and rotation. Finally after importing a number of tiles we use Raster Design tools to merge the four images into one and then export this and create a new world file...
Watch it on the highest quality in Youtube for best results