基于新型阵列结构的多波束SAS逐点成像算法研究
doi: 10.3724/SP.J.1146.2010.00730
Research on the Dot-by-dot Imaging Algorithm for Multi-beam SAS Based on a New Array Configuration
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摘要: 该文基于多波束测深和合成孔径技术原理，提出了多波束合成孔径声呐(Synthetic Aperture Sonar, SAS)的实现方案，设计了一种新型的多接收阵元阵列结构，有针对性地推导了相关数学模型，并仿真实现了逐点成像算法。计算机仿真结果表明：相比于传统多波束测深声呐，新方案的方位向分辨率有了明显的提高；相比于常规合成孔径声呐，新方案能够得到更多的目标信息，且能改善成像效果。Abstract: The paper proposes a scheme for the realization of multi-beam Synthetic Aperture Sonar (SAS) based on the multi-beam bathymetry and aperture synthetic principle, designs a new multiple receiver array structure, deduces correlated math model, and simulates the dot-by-dot imaging algorithm according to the array structure. Computer simulation results show that: compared with multi-beam bathymetry sonar, the new scheme can remarkably improve the along-track resolution, and compared with conventional SAS, the new scheme can get more information of the target and enhance the imaging quality.
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Key words:
- Synthetic Aperture Sonar (SAS) /
- Multi-beam /
- Bathymetry /
- Dot-by-dot imaging algorithm
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