A hybrid navigation system including a neural network is provided. The hybrid
navigation
system includes a global positioning system (GPS) as a main system using satellites
and a radio determination system when there are difficulties in reception of signals
from the satellites. The hybrid navigation system comprises a GPS signal processor,
a TDOA signal processor and a neural network. The GPS signal processor receives
GPS signals from the satellites to determine positions. The TDOA signal processor
receives determination signals from mobile communication stations to determine
positions. The neural network uses position values inputted from each of the GPS
signal processor and the TDOA signal processor to learn and predict the position
of the mobile terminal.
