| 摘要: |
| 为了评估X-波段船载雷达观测海浪和海流参数的能力。基于随机海浪理论和雷达几何成像原理模拟了不同调制影响的X-波段船用雷达图像序列，介绍了估算海浪参数和海流参数的算法，对影响雷达观测海流和海浪有关因素进行了分析。同时在雷达图像中加入了随机高斯白噪声，并通过数值方法验证了雷达图像的信噪比开方和有效波高之间的线性关系。数值模拟结果说明X-波段船用雷达能够有效地估算海浪和海流参数，且带有不同噪声水平的雷达系统应具有不同的定标系数。
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| 关键词: X-波段船用雷达 海浪 海表面流 信噪比 |
| DOI： |
| 分类号: |
| 基金项目:中国科学院科研装备研制项目资助（YZ200724） |
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| The simulation of monitoring oceanic dynamical environment parameters based on X-band nautical radar |
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CUI Li-min,HE Yi-jun
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| Abstract: |
| Numerical simulations are used to evaluate the capability of monitoring the ocean wave and current for X-band nautical radar. Based on the random wave theory and radar imaging principle of geometry, the radar image sequences are simulated by considering shadow effect. The existing algorithms to estimate the sea surface current and ocean wave spectrum are introduced, and then the relevant factors that influence the observation of the sea surface current and ocean wave are analyzed. Finally, the RSN (Signal to Noise Ratio) for radar images, which are added to the Gaussian white noise, is calculated, and the linear relationship between the square root of the RSN and significant wave height is validated. It is shown that the X-band nautical radar can monitor effectively the ocean wave and surface current, and radars with different noise levels are corresponding to different calibration coefficients.
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| Key words: X-band nautical radar ocean wave sea surface current signal to noise ratio |
