ASTi's Terrain Database server offloads occulting and signal degradation information and provides complete simulation of terrain effects on the communications environment including voice and tactical data transmissions, jamming, etc. For convenience, a complete DTED Level 0 dataset of the earth is delivered with the ability to install higher-fidelity terrain data in desired areas of interest.

The Terrain Server interacts with ACE via the modeling environment's existing Terrain Interface and supports all transmitter/receiver pairs on the network.

Propagation algorithms are optimized to ensure real-time performance and handling of large amounts of transmitters and receivers, without sacrificing accuracy of the Fresnel Zone diffraction effects.

Terrain capabilities include:

• DTED Level 0 terrain data of complete earth
• Ability to add custom data on top of baseline data
• Optimized path loss calculation for real-time performance
• Fresnel Zone diffraction effects
• Tracking of all transmitters/receivers over the simulation network
• Visualization tool for point-to-point queries