Abstract: Methods and apparatus for the determination of the location of a mobile vehicle relative to a radio transceiver. The apparatus incorporates a mobile transceiver that calculates its location relative to at least a first stationary transceiver, and communicates this location back to the stationary transceiver. As a mobile vehicle enters the radio field radiated from at least a first stationary transceiver unit, the mobile vehicle transceiver begins measuring the energy of one or more radiated signals as an analog value, converts the analog value to digital form, from which a microprocessor and software algorithm calculates the specific distance from the stationary transceiver, and then returns a data string that informs the stationary transceiver of its location. This system thus allows both the mobile transceiver and the stationary transceiver unit to gain specific information with regard to the relative distance between mobile and base station units.