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首页> 外文期刊>Oceanic Engineering, IEEE Journal of >HF Radar Ocean Surface Cross Section for the Case of Floating Platform Incorporating a Six-DOF Oscillation Motion Model
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HF Radar Ocean Surface Cross Section for the Case of Floating Platform Incorporating a Six-DOF Oscillation Motion Model

机译：HF雷达海洋表面横截面，用于浮动平台的浮动平台，包括六-COF振荡运动模型

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摘要

To interpret the characteristics of ocean surface echo signals, the general first- and second-order high-frequency surface wave radar (HFSWR) ocean surface scattering cross sections are mathematically derived for an omnidirectional receiving antenna being deployed on a floating ocean platform incorporating a six-degree-of-freedom (DOF) oscillation motion model. The six-DOF oscillation motion includes sway, surge, yaw, heave, pitch, and roll. The derived radar cross sections can be degenerated to existing results involving some simple oscillation motion models or an onshore case. Simulation results show that six-DOF oscillation motion can induce additional peaks in radar spectra and these motion-induced peaks appear symmetrically in frequency. Furthermore, the positions and intensities of these motion-induced peaks depend on the angular frequency and amplitude of each 1-D oscillation motion. In particular, the intensities of the Bragg peaks may be lower than those of the motion-induced peaks in some conditions, which is an extremely important phenomenon for ocean remote sensing using floating-based platform HFSWR. In addition, yaw appears to have the largest effect on the radar spectra and the antenna should be placed near the center of rotation. Measured radar spectra also preliminarily confirmed the reliability of the derived scattering model. This article provides a significant theoretical foundation in future investigation and practical application of ocean remote sensing and moving target detection using floating-based platform HFSWR.
机译：为了解释海面回波信号的特征，一般的第一和二阶高频表面波雷达（HFSWR）海面散射横截面是为在包含六个浮海平台上部署的全向接收天线的数学地导出 - 自由度（DOF）振动运动模型。六截止振荡运动包括摇摆，浪涌，偏航，升降，俯仰和卷。衍生的雷达横截面可以退化为涉及一些简单振荡运动模型或陆上案例的现有结果。仿真结果表明，六型振荡运动可以在雷达光谱中引起额外的峰值，并且这些运动诱导的峰值在频率上对称出现。此外，这些运动诱导峰的位置和强度取决于每个1-D振荡运动的角频率和幅度。特别地，布拉格峰的强度可能低于某些条件中的运动诱导的峰值的强度，这是使用基于浮动平台HFSWR的海洋遥感的极其重要的现象。此外，XAW似乎对雷达光谱具有最大的影响，并且天线应放置在旋转中心附近。测量的雷达光谱还初步证实了衍生散射模型的可靠性。本文在未来调查和实际应用中，使用浮动平台HFSWR提供了远程调查和实际应用的重要理论基础。

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