By a News Reporter-Staff News Editor at Science Letter -- Investigators publish new report on Algorithms. According to news reporting originating from Alcala de Henares, Spain, by NewsRx correspondents, research stated, "Radar imaging based on static high-resolution coherent radar is widely known as inverse synthetic aperture radar (ISAR) imaging. This 'all-weather' system is able to provide slant-range - Doppler images of non-cooperative targets whose motion is unknown."
Our news editors obtained a quote from the research from the University of Alcala de Henares, "Conventional ISAR systems are designed for imaging targets with a direct line of sight of sensors. For this reason, they have a reduced performance in today's complex scenarios - such as urban environments - where secondary returned waveforms are added to directly reflected echoes coming from targets. They are known as ghost artefacts since they obscure true targets when using the standard range-Doppler algorithm (RDA). In this study, an innovative multipath mitigation technique is presented, in which 'time reversal (TR)' concept is implemented in ISAR images, leading to 'TR-ISAR algorithm'. For this purpose, a pre-processing algorithm is previously needed so as to solve the geometric problem related to multipath. Finally, superresolution algorithms provide us with the tools to mitigate the spurious component that arises during the averaging process carried out by TR-ISAR. The authors' conclusion is that imaging quality after employing superresolution approaches is clearly improved."
According to the news editors, the research concluded: "As a proof-of-concept, real data from high-resolution radar have been used to verify the proposed method."
For more information on this research see: Multipath mitigation techniques based on time reversal concept and superresolution algorithms for inverse synthetic aperture radar imaging. IET Radar Sonar and Navigation, 2013;7(4):413-421. IET Radar Sonar and Navigation can be contacted at: Inst Engineering Technology-Iet, Michael Faraday House Six Hills Way Stevenage, Hertford SG1 2AY, England (see also Algorithms).
The news editors report that additional information may be obtained by contacting I. de Arriba-Ruiz, University of Alcala de Henares, Escuela Politecn, Dept. of Signal Theory & Commun, Alcala De Henares 28805, Madrid, Spain. Additional authors for this research include J.M. Munoz-Ferreras and F. Perez-Martinez.
Keywords for this news article include: Spain, Europe, Algorithms, Alcala de Henares
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