| 摘要 |
<p>A vehicle route finding system whereby a vehicle borne receiver (10) picks up signals from a radio navigation system (14, 15, 16, 23), such as the Loran-C system, and transmits data related to its location to a central station, via the data channel on a radiotelephone link. At the central station a computer (16) determines the vehicle's position from the Loran data and, knowing its desired destination, retransmits routing information back to the driver. True position values additionally transmitted from the vehicle are used to compensate for propagation errors.</p> |
