Patent ID: 6094169
Filing Date: 2000-07-25
Classification: G01S,G08G

Abstract:
A method for calibrating a multilateration system, comprising the steps of:receiving, at a plurality of first radio receivers having known position values, a first radio signal from a first transmitter having a known position value;measuring a first time value when the first radio signal is received at one of the plurality of first radio receivers;measuring first time difference values between when the first radio signal is received at the one of the plurality of first radio receivers and when the first radio signal is received at others of the plurality of first radio receivers;calculating a first theoretical time difference values for each of the others of the plurality of first radio receivers based upon the known position value of the first transmitter and the known position values of the first radio receivers; andgenerating first error correction values, for each of the others of the plurality of first radio receivers, proportional to the difference between the first time difference values and the first theoretical time difference values.