Patent ID: 6744404
Filing Date: 2004-06-01
Classification: G01S,H04B

Abstract:
A method of measuring the phase of a pseudorandom (PN) sequence of chips, each chip having a polarity that is either positive or negative, and having a time duration, Tchip, the method comprising:generating a reference model exhibiting a reference phase, said reference phase adjustable to facilitate alignment with said phase of said pseudorandom sequence; establishing a plurality of pulsed-windows over which a plurality of samples of said pseudorandom sequence are collected for a selected accumulation internal; accumulating said plurality of samples for each pulsed window of said plurality of pulsed windows to form a plurality of accumulated sums; compensating each accumulated sum to form at least one compensated sum, if a number of level transitions and non-transitions of said pseudorandom sequence is not equal; and combining said compensated sum to determine a phase error from said plurality of compensated sums, said phase error corresponding to a phase difference between said reference phase and said phase of said pseudorandom sequence.