Patent ID: 6700538
Filing Date: 2004-03-02
Classification: G01S,H04B

Abstract:
In an impulse radio system, a method of estimating a separation distance between an impulse radio transmitter and an impulse radio receiver, comprising the steps of:(a) transmitting an impulse signal from the transmitter, the impulse signal having one of an ultra-wideband and medium wideband frequency characteristics; (b) receiving the transmitted impulse signal at a receiver spaced from the transmitter; (c) measuring a signal strength of the received impulse signal; (d) classifying a multipath environment at the receiver using the received impulse signal; (e) selecting at least one radio propagation path loss model from a plurality of different radio propagation path loss models based on said classifying step; and (f) estimating the separation distance based on the selected radio propagation path loss model.