The present invention provides a radio navigation emulating GPS device. In one
embodiment, the radio navigation emulating GPS device receives an identifier associated
with a conventional radio navaid. The present radio navigation emulating GPS device
then retrieves latitude and longitude information corresponding to the received
conventional radio navaid from a database. A satellite based position information
system generates position information for the aircraft on which the present radio
navigation emulating GPS device is disposed. The present radio navigation emulating
GPS device then generates navigation information for the aircraft using the retrieved
latitude and longitude information and the satellite based position information
for the aircraft. The present radio navigation emulating GPS device then presents
the navigation information in a manner which emulates the presentation of navigation
information generated by a conventional radio navigation device. The entire emulation
process is transparent to the user of the present radio navigation emulating GPS device.
