Performance Comparisons of Modified SMI and GLR Algorithms

Lujing Cai; Hong Wang

doi:10.1109/7.81430

Performance Comparisons of Modified SMI and GLR Algorithms

Lujing Cai, Hong Wang

Department of Electrical Engineering & Computer Science

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

When adaptive filtering is used for signal detection in colored interference of unknown statistics, it is often desirable for the system to have a constant false alarm rate (CFAR) feature. The detection performance of a modified version of the well-known sample matrix inversion (SMI) algorithm, called the modified SMI (MSMI), is compared in this paper with that of the generalized likelihood ratio (GLR) algorithm in colored Gaussian interference. The performance sensitivity of the MSMI and GLR in colored Weibull and log-normal interference is studied via simulation. It is found that there is almost no need to use the more complicated GLR algorithm in Gaussian interference, while in Weibull or log-normal interference the GLR should be preferable to the MSMI.

Original language	English (US)
Pages (from-to)	487-491
Number of pages	5
Journal	IEEE Transactions on Aerospace and Electronic Systems
Volume	27
Issue number	3
DOIs	https://doi.org/10.1109/7.81430
State	Published - May 1991

ASJC Scopus subject areas

Aerospace Engineering
Electrical and Electronic Engineering

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AB - When adaptive filtering is used for signal detection in colored interference of unknown statistics, it is often desirable for the system to have a constant false alarm rate (CFAR) feature. The detection performance of a modified version of the well-known sample matrix inversion (SMI) algorithm, called the modified SMI (MSMI), is compared in this paper with that of the generalized likelihood ratio (GLR) algorithm in colored Gaussian interference. The performance sensitivity of the MSMI and GLR in colored Weibull and log-normal interference is studied via simulation. It is found that there is almost no need to use the more complicated GLR algorithm in Gaussian interference, while in Weibull or log-normal interference the GLR should be preferable to the MSMI.

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Performance Comparisons of Modified SMI and GLR Algorithms

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