Best way to tile a terrain?

I am making a terrain for a flight simulator using aerial imagery that's about 2000 m x 1200 meters per image and need to place specific images over an area about 100K meters square. Currently, the terrain can be flat. What's the best way to generate the terrain and manage level of detail?

you can try this:

Use a grid of linked terrains. They should be square, so your 2000 x 1200 images should probably be pasted together into one huge image, which should then be re-divided into 2048 x 2048 sections, one for each terrain.

If the terrain is to be flat, you probably don't want to mess around with the terrain system. Consider using either imported geometry or building the mesh yourself in Unity through script - the flatness will likely negate and of the benefits of using the terrain system. Also, it sounds like you've got your own huge textures pre-built, so you wouldn't need to leverage the splatmapping stuff in the terrain system. Thus it would just be more overhead.

You might take a look at Presagis' Terra Vista and Creator .

Starting at EUR 10k for Creator and EUR 20k for Terra Vista these software packages are made for the Visual Simulation market.

And their ‘industry standard’ Open Flight format is practically nowhere else supported …