CloudRF has 3 types of global clutter data to improve the accuracy of your planning.
You can enable random clutter everywhere, upload your own 'point clutter' or enable Global landcover. Read more about clutter on the wiki.
To enhance the terrain data with man made obstacles such as buildings and wind turbines there are two clutter layer options available. You can either choose to simulate random clutter at a set height eg. 8m for houses in a suburban area, or upload your own defined 'precision' clutter as a KML layer (Polygon,Polyline,Points all ok). Once loaded you can use the precise clutter by selecting 'Own clutter' in the interface.
The 2012 landcover clutter has 17 bands representing different obstacles (Trees, Vegetation). These can be enabled to enhance the accuracy of the digital terrain.
LIDAR data is the highest accuracy data available and is enabled as an option for expert users. Models for cities and rural areas alike are uploaded to the system on request as tiles and allow a clutter accuracy of 2m.
Read more about clutter here.