Patent ID: 7508865
Filing Date: 2009-03-24
Classification: G01S,H04B,H04L

Abstract:
1. A method for tracking an incoming ultra wide bandwidth signal at an ultra wide bandwidth receiver, comprising the steps of: receiving incoming pulses of the incoming ultra wide bandwidth signal as a lead signal by a front end circuit; delaying the incoming pulses by a set delay time to generate a lag signal; determining an error signal based on the lead signal and the lag signal by an error determining circuit; determining a sign of the error signal; advancing a phase of a local clock if the sign has a first quality; and retarding the phase of the local clock if the sign has a second quality, wherein the incoming pulses are at least one of bi-phase modulated, and quadrature phase modulated, wherein adjacent pulses of the incoming pulses arrive at a predetermined interval, the predetermined interval being the time between the incoming pulses, and wherein the first quality is being one of positive or negative, and the second quality is being the inverse of the first quality.