Geographical Map Overlay Modeling

If you have a communication system that's exhibiting a problem—for example, reception is poor in certain pockets—ARINC can help by performing a communications coverage analysis.

We start by defining the geographic area of interest. Then we obtain terrain elevation data from various sources and load these data, along with the communications system parameters into our analysis and display tools (ArcInfo™, ICEAREA, Wireless InSite, Spectrum Management Toolset, and TIREM™) and run the propagation model. Our model also considers environmental conditions, such as atmospheric refractivity, ground conductivity, humidity, sunspots, time of day, and season.

We display results on easy-to-read geographic map overlays that visually portray the propagation and strength of the electromagnetic radiation emanating from the antenna or system. Results can be displayed from ground level on up to any elevation. Using this technique, we literally can see where and to what degree the problem exists; quickly understand any effects of terrain, geography, and existence of man-made structures; and develop a solution.

We use an identical technique to evaluate potential antenna locations for new communications and radar systems. Our precise map overlays and sophisticated propagation analysis programs let us accurately predict and assess actual system performance—before the facility is built or even prototyped.

ARINC has used these techniques to analyze HF, VHF, and UHF systems; preliminary EUROCONTROL test of air/ground data link HF data link, and VHF digital link services; as well as various communications systems for the U.S. Navy.