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为了提高舰船排气红外辐射监测水平,提出了一种基于声波法的排气烟羽温度测量和辐射强度计算方法。利用声速与温度的关系,建立排气温度场声学测量模型,通过声波传感器测量的声波传递时间,重建排气烟羽温度分布。利用该温度分布,通过解算红外辐射模型,获取排气红外辐射强度。通过仿真实例对该方法进行了验证,仿真结果表明:基于声波法的温度场重建方法在5%的测量误差水平内具有良好的重建效果,基本解决了舰船排气温度场和辐射强度实时计算的数学模型问题,为进一步开展舰船红外辐射实时监测技术的实船应用奠定了基础。
In order to improve the monitoring level of infrared emission of the ship’s exhaust gas, a temperature measurement and radiation intensity calculation method of exhaust plume based on acoustic wave method is proposed. Based on the relationship between the sound velocity and the temperature, an acoustic measurement model of the exhaust temperature field is established. The acoustic emission time measured by the acoustic sensor is used to reconstruct the temperature distribution of the exhaust plume. By using this temperature distribution, the infrared radiation intensity of the exhaust gas can be obtained by solving the infrared radiation model. The simulation results show that the method of temperature field reconstruction based on acoustic wave method has a good reconstruction effect within 5% of the measurement error level and basically solves the real-time calculation of the ship’s exhaust temperature field and radiation intensity The mathematic model of the problem has laid the foundation for the further development of the real ship application of the ship’s infrared radiation real-time monitoring technology.