Accession Number : ADA290359

Title :   Exploitation of Higher-Order Cyclostationarity for Weak-Signal Detection and Time-Delay Estimation,

Corporate Author : STATISTICAL SIGNAL PROCESSING INC YOUNTVILLE CA

Personal Author(s) : Spooner, Chad M. ; Gardner, William A.

PDF Url : ADA290359

Report Date : OCT 1992

Pagination or Media Count : 6

Abstract : The cumulant theory of cyclostationary time-series is applied to several types of weak-signal detection problems that arise in the area of signal interception, and to the problem of estimating the relative time-delay of a heavily corrupted signal that is received at two locations. The cumulant theory of cyclostationarity (CS) is the theory of higher-order temporal and spectral cumulants and moments of CS time-series. Specifically, the theory characterizes the additive sine waves present in the output of nonlinear transformations of CS time-series. The detection and time-delay estimation problems that are posed are difficult to solve because the signal is weak, the noise and interference is nonstationary and non-Gaussian, and the signal does not exhibit second-order CS.

Descriptors :   *SIGNAL PROCESSING, *DETECTION, REPRINTS, POSITION(LOCATION), INTERCEPTION, TIME SERIES ANALYSIS, ESTIMATES, NONLINEAR SYSTEMS, SIGNALS, ORDER STATISTICS, TRANSFORMATIONS, SINE WAVES.

Subject Categories : Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE