Signal-processing techniques for resolving individual pulses in a multipath signal

Abstract

A maximum-likelihood procedure for estimating the amplitudes and arrival times of individual pulses in a multipath signal is derived. Computer simulation results are presented that compare this procedure with the more traditional matched-filter and inverse-filter techniques. The maximum-likelihood technique is shown to be significantly more accurate than either the matched or inverse filter. A computer algorithm for implementing the maximum-likelihood estimation procedure is described.