| 摘要 |
A location system and method whereby the azimuth and range information of an aircraft with respect to a reference ground station is made available to other aircraft by transmission of a pulse at a time uniquely associated with the aircraft's location. A synthetic azimuth function and a synthetic range function provide a periodic mapping of an area. The synthetic azimuth function is a slowed, time-expanded representation of a conventional azimuth function. Each azimuth increment is allocated a time slot in the synthetic azimuth function. The synthetic azimuth function is synchronized by counting a number of synchronizing pulses from the conventional azimuth function, and a synthetic azimuth reference pulse is periodically transmitted from a reference ground station to synchronize all aircraft using the synthetic azimuth function. During the particular synthetic azimuth function time slot corresponding to an aircraft's azimuth, a pulse is transmitted and the aircraft's range is encoded as the time-delay of that pulse with respect to the most recent conventional azimuth synchronizing pulse, providing a synthetic range function which is embedded in one of the synthetic azimuth degree increments. Display and collision warning devices are also synchronized and operated by this location system.
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