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舰船在海面航行时会在船后留下一条明显可辨的尾流且能够持续很长时间,长度可达数千米。采用JONSWAP谱模型实现了海面的模拟,结合Kelvin尾迹模型,完成了海洋背景下Kelvin波的尾迹显示。在此基础上,综合考虑海面及周围环境辐射的影响,建立尾迹探测的红外辐射模型,计算并分析了Kelvin尾迹的红外辐射特征。研究结果表明:探测俯仰角较小时,Kelvin尾迹特征明显易于探测,俯仰角较大时,Kelvin尾迹特征减弱;海面风速是影响探测效果的重要因素,风速增加,海面对Kelvin尾迹的调制作用增强,最终会导致无法探测;尾迹探测不受白天和夜晚的影响。
When the ship navigates at sea, it will leave behind a clearly discernible wake behind the ship and can last a long time up to several kilometers in length. The JONSWAP spectral model is used to simulate the sea surface. Combined with the Kelvin wake model, the wake of the Kelvin wave in the ocean background is displayed. On this basis, taking into account the influence of the radiation from the sea surface and the surrounding environment, an infrared radiation model of wake detection is established, and the infrared radiation characteristics of the Kelvin wake are calculated and analyzed. The results show that the characteristics of Kelvin wake are easy to detect when the pitch angle is small, and the characteristics of Kelvin wake are weakened when the pitch angle is large. The wind speed is an important factor that affects the detection effect. When the wind speed increases, the modulation effect of sea surface on Kelvin wake increases , Eventually can not detect; wake detection from the day and night.