Research on the Range-Frequency Interference Characteristics of Target Scattering Field in a Shallow Water Waveguide
Source abstract
Abstract
Based on the target scattering model and the normal mode theory in a shallow water waveguide, a mathematical model of the acoustic intensity under the coupling condition of the target and the environment was deduced, and the interference striations in the monostatic and bistatic configuration were obtained by simulations. Further, a field experiment was carried out in a lake, and the data were collected for a spherical target in two frequency bands, i.e., 20−40 kHz and 40−80 kHz. The experiment results showed good agreement with the simulations. The results of the simulation and the experiment showed that the existence of the target made the interference phenomenon in shallow water waveguides more complex, and the range-frequency interference characteristics were closely related to the configuration of the sonar system, the target scattering function, the frequency range, and the target movement trajectory. These interference phenomena were found and theoretically analyzed in the paper. The research results can be applied to target detection and recognition, signal parameter estimation, target tracking, and other fields.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Underwater Acoustics Research · Underwater Vehicles and Communication Systems · Marine animal studies overview
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Automation Department, Hangzhou Dianzi University, Hangzhou 310018, China
Department of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China
Department of Electronic and Information Engineering, Guangdong Ocean University, Zhanjiang 524088, China
Funding
Natural Science Foundation of China · Zhejiang Provincial Natural Science Foundation of China · Extension Fund from Underwater Test and Control Technology Key Laboratory
References (21)
Show source-provided references
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