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13th International Scientific-Technical Conference on Actual Problems of Electronics Instrument Engineering (APEIE)

作者： Dorosinskiy, Leonid G. Budyldina, NadezhdaV. Urals Tech Inst Commun & Informat Ekaterinburg Russia

ISBN: (纸本)9781509040698

The paper deals with an algorithm for detection of a broadband signal received from a multiple-unit source against the background with architecturally-like clutters that differ by location and additive space-uncorrelated noise. It is shown that the optimal detection algorithm represents the weight processing in the "ray space" of the transformed vector of observed data and does not demand access of any large matrix. A maximum likelihood ratio is chosen as the optimality criterion. After determining the inverse of the correlation function, expression for the optimal weight function is obtained. The design ratios for determination of detection characteristics under the Gaussian statistics of signals and clutters are given. The results confirm the property of the suggested algorithm: at low signal/noise ratios, efficiency of point targets detection is better, and at the large ratios the distributed targets are better detected.

关键词： Detection algorithm distributed clutter

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Closed-form expressions of PFA of mean level CFAR detectors for multiple-pulse gamma-distributed radar clutter

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REMOTE SENSING LETTERS 2023年第10期14卷 1056-1063页

作者： Baadeche, Mohamed Soltani, Faouzi Univ Freres Mentouri Constantine 1 Lab Signaux & Syst Commun Constantine 25000 Algeria Univ Freres Mentouri Constantine 1 Dept Sci Geog & Topog Constantine Algeria Univ Freres Mentouri Constantine 1 Dept Elect Constantine Algeria

In a radar detection system, multiple pulse (MP) transmission is used to improve detection performance compared to the single pulse case by integrating the echoes of pulses at reception. In this paper, we derive closed-form expressions of the probability of false alarm PFA of the cell averaging-constant false alarm rate, greatest-of CFAR, and smallest-of CFAR detectors considering a homogeneous gamma distributed radar clutter applied to the MP case. Expressions are given by analytical formulas for a positive real shape parameter which correspond to a real situation and are validated by comparing them in terms of the detection threshold calculated values T, to the results obtained by means of Monte Carlo simulations.

关键词： Multiple pulses CA-CFAR GO-CFAR SO-CFAR gamma distributed clutter

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Synthesis and Analysis of Detection Algorithm of distributed Sources Against Background With distributed clutter

Synthesis and Analysis of Detection Algorithm of Distributed...

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International Scientific-Technical Conference on Actual Problems of Electronics Instrument Engineering

作者： Leonid G.Dorosinskiy Nadezhda V. Budyldina Urals Technical Institute of Communication and Informatics Yekaterinburg Russia

ISBN: (纸本)9781509040704

The paper deals with an algorithm for detection of a broadband signal received from a multiple-unit source against the background with architecturally-like clutters that differ by location and additive space-uncorrelated noise. It is shown that the optimal detection algorithm represents the weight processing in the ?ray space? of the transformed vector of observed data and does not demand access of any large matrix. A maximum likelihood ratio is chosen as the optimality criterion. After determining the inverse of the correlation function, expression for the optimal weight function is obtained. The design ratios for determination of detection characteristics under the Gaussian statistics of signals and clutters are given. The results confirm the property of the suggested algorithm: at low signal/noise ratios, efficiency of point targets detection is better, and at the large ratios the distributed targets are better detected.

关键词： Detection algorithm distributed clutter

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