Patent ID: 6133876
Filing Date: 2000-10-17
Classification: G01S,H04B

Abstract:
In an impulse radio system having a first transceiver with a first clock and a second transceiver spaced from said first transceiver and having a second clock, a method comprising the steps of:generating a first reference clock pulse using said first clock;triggering the transmission of a first sequence of pulses with said first reference clock pulse:transmitting from said first transceiver said first sequence of pulses;receiving said first sequence of pulses at said second transceiver;synchronizing said second transceiver using said first sequence of pulses;generating a second reference clock pulse using said second clock;triggering the transmission of a second sequence of pulses with said second reference clock pulse;transmitting from said second transceiver said second sequence of pulses;receiving at said first transceiver said second sequence of pulses;synchronizing said first transceiver with said second sequence of pulses;generating a delayed first reference clock pulse in response to said synchronization with said second sequence of pulses; andmeasuring a time difference between said delayed first reference clock pulse and said first reference clock pulse, said time difference indicating a total time of flight of said first and second sequence of pulses.