News Column

New Radar and Sonar Research Findings Reported from Zhejiang University

June 6, 2014

By a News Reporter-Staff News Editor at Science Letter -- Research findings on Radar and Sonar Research are discussed in a new report. According to news reporting originating in Hangzhou, People's Republic of China, by NewsRx journalists, research stated, "This study addresses the problem of tracking acoustically a moving source in shallow water, which is challenged by multi-path sound propagation. A specific source of interest is an autonomous underwater vehicle with periodic sound transmissions."

The news reporters obtained a quote from the research from Zhejiang University, "Given a simple horizontal linear receiving array, the authors develop a Bayesian tracking method based on measurements of signal arriving angle and difference of respective sonar transmission and receiving time intervals. To counter the multi-path effect and thus improve estimation accuracy of time differences, passive time reversal processing is exploited. Further, the unscented Kalman filter is adopted in tracking to handle nonlinearity in measurements."

According to the news reporters, the research concluded: "The proposed method is tested in simulations as well as an at-sea experiment, and the results validate the effectiveness of the developed approach."

For more information on this research see: Bayesian passive acoustic tracking of a cooperative moving source in shallow water. IET Radar Sonar and Navigation, 2014;8(3):202-208. 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 Radar and Sonar Research).

Our news correspondents report that additional information may be obtained by contacting Z.G. Yang, Zhejiang University, Dept. of Informat Sci & Elect Engn, Hangzhou 310027, Zhejiang, People's Republic of China. Additional authors for this research include H.F. Zhao and W. Xu.

Keywords for this news article include: Asia, Hangzhou, Radar and Sonar Research, People's Republic of China

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Source: Science Letter

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