Qingdao Radar and Sonar Repairing Factory

Qingdao, China

Qingdao Radar and Sonar Repairing Factory

Qingdao, China

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Zhang W.,Qingdao Radar and Sonar Repairing Factory | Zhang W.,Wuhan Naval University of Engineering | Zhou S.,Wuhan Naval University of Engineering | Zhang C.,Qingdao Radar and Sonar Repairing Factory | Guo H.,Wuhan Naval University of Engineering
Wuhan Ligong Daxue Xuebao (Jiaotong Kexue Yu Gongcheng Ban)/Journal of Wuhan University of Technology (Transportation Science and Engineering) | Year: 2014

The highlight echoes structure with high frequency from small immerged target was provided using ray acoustics at first. In use of wave theory, the approximate model of multi-layer target covered with viscoelastic material and its echoes structure were established by means of combined single shells. By the contrasting approximation echoes with the exactness, the relationship between target echoes and absorption materials was provided as well as the each part contribution of the target. The analysis results show that the absorption materials play a main role in target echoes with high frequency or large loss factor. Finally, taking spray poiyurea elastomer as an example, the correctness of conclusion in this paper was validated. ©, 2014, Wuhan University of Technology. All right reserved.


Zhang W.,Qingdao Radar and Sonar Repairing Factory | Zhang W.,Wuhan Naval University of Engineering | Zhou S.,Wuhan Naval University of Engineering | Chen C.,Qingdao Radar and Sonar Repairing Factory | Zhang C.,Qingdao Radar and Sonar Repairing Factory
Wuhan Ligong Daxue Xuebao (Jiaotong Kexue Yu Gongcheng Ban)/Journal of Wuhan University of Technology (Transportation Science and Engineering) | Year: 2014

The velocity and precision of planar element method based on kirchhoff approxiation was decided by the element partition when calculating target scattering characteristic. The paper provided far field planar element method formulae of Gordon integral algorithm. The rigid sphere model was built by ANSYS. Then the relation between element partition and algorithm performance was analysed using rigid sphere model. On the basis above, the paper educed the method of element partition. At last, the validity of method the paper advanced was validated by column model simulation.

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