Abstract
The contribution of an inertial Navigation System (INS) combined with present and projected VOR/DME to the accuracy and efficiency of area navigation is evaluated by comparing system performance with and without INS aiding. Sensitivity to INS quality is described by showing area navigation performance using high and medium accuracy production INS. The increased accuracy of the INS aided area navigation system is evaluated with respect to its impact on decreasing the protective airspace requirements, greater waypoint location flexibility, and increased accuracy of vertical navigation between waypoints. To complete the description of an inertially aided AREA-NAV system, the basic computational techniques and trade-offs for optimally mixing sensor information are presented.
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