CHARACTERIZATION OF SPECTRAL CORRELATION DETECTOR STATISTICS USEFUL IN TRANSIENT DETECTION

被引：5

作者：

HARDWICKE, KR

WILSON, GR

BAUGH, KW

机构：

[1] Applied Research Laboratories, The University of Texas at Austin, Austin, 78713-8029, TX

来源：

CIRCUITS SYSTEMS AND SIGNAL PROCESSING | 1994年 / 13卷 / 04期

关键词：

Magnitude of complex-Wishart density function - Noncentral magnitude of complex-Wishart density function - Spectral correlation detectors - Transient detection;

D O I：

10.1007/BF01183744

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The statistics of a class of transient signal detectors known as spectral correlative detectors (SCD) are investigated. Rather than use asymptotic statistics, which are not valid for the short sample sizes typically encountered in transient detection, finite sample statistics are developed. In particular, for the case of no frequency averaging, the statistics are characterized in terms of a magnitude-of-complex-Wishart (MOCW) density function, and a noncentral-MOCW (NMOCW) density function under the condition that the transient signal is absent and present, respectively. Subsequently, the statistics of the SCD for various coherent and incoherent averaging lengths are characterized in an analogous fashion. Finally some experimental verification of these densities is presented.

引用

页码：497 / 511

页数：15

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