A1 J.M. O' Toole

A1 M. Mesbah

A1 B. Boashash

PB iet

T1 Accurate and efficient implementation of the time–frequency matched filter

JN IET Signal Processing

VO 4

IS 4

SP 428

OP 437

AB The discrete time–frequency matched filter should replicate the continuous time–frequency matched filter, but the methods differ. To avoid aliasing, the discrete method transforms the real-valued signal to the complex-valued analytic signal. The theory for the time–frequency matched filter does not consider the discrete case using the analytic signal. The authors find that the performance of the matched filter degrades when using the analytic, rather than real-valued, signal. This performance degradation is dependent on the signal-to-noise ratio and the signal type. In addition, the authors present a simple algorithm to efficiently compute the time–frequency matched filter. The algorithm with the real-valued signal, comparative to using the analytic signal, requires one-quarter of the computational load. Hence the real-valued signal – and not the analytic signal – enables an accurate and efficient implementation of the time–frequency matched filter.

K1 continuous time-frequency matched filter

K1 discrete time-frequency matched filter

K1 signal-to-noise ratio

K1 real-valued signal

K1 complex-valued analytic signal

DO https://doi.org/10.1049/iet-spr.2009.0104

UL https://digital-library.theiet.org/;jsessionid=v27d739qoq8g.x-iet-live-01content/journals/10.1049/iet-spr.2009.0104

LA English

SN 1751-9675

YR 2010

OL EN