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Telecommunications and Radio Engineering

Publication de 12  numéros par an

ISSN Imprimer: 0040-2508

ISSN En ligne: 1943-6009

SJR: 0.185 SNIP: 0.268 CiteScore™:: 1.5 H-Index: 22

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BISPECTRUM-BASED RADAR RANGE PROFILE EVALUATION FOR THE NAVAL TARGETS EMBEDDED IN SEA CLUTTER ENVIRONMENT

Volume 75, Numéro 4, 2016, pp. 333-353
DOI: 10.1615/TelecomRadEng.v75.i4.40
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RÉSUMÉ

In this paper, application of bispectrum-based signal processing to problem of radar range profile (RRP) reconstruction is considered for the purposes of naval object detection and recognition in sea clutter. It is demonstrated by the analysis of the received radar backscattered signal, that it contains several temporal and spatial non-stationary contributions caused by sea clutter. Two different techniques used for estimation of the RRPs are considered and their performances are studied experimentally. The first considered technique exploits the averaging of the after-detection envelopes performed for the sequence of accumulated radar pulse echo-signals. The second technique is based on the averaging of the sequence of bispectral estimates computed for the sequence of the radar echo-signals and following reconstruction of the backscattered signal envelope. State of the art for experimental measurements carried out by X-band radar in real-life sea clutter environment is described. Analysis of the experimental results obtained for real radar data is performed for different polarization combinations and various sea clutter conditions caused by wind speed. The plots of the RRPs are demonstrated for different cases of sea state. The benefits of the bispectrum-based technique as compared with common ensemble averaging technique are illustrated.

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