利用PJ模型计算最低陷获频率的适应性

为了研究PJ模型的适应性,简述了蒸发波导原理和PJ模型理论,介绍了海上蒸发波导测量方法和如何确定电磁波的最低陷获频率;分析了以PJ模型计算的蒸发波导最低陷获频率对气象参数的敏感性,提出以最小陷获频率为基准,检验PJ模型的适应性;通过将PJ模型值计算结果与海上试验实测值进行比较,得出试验数据分析结果与敏感性结论基本相符,结果显示PJ模型在我国海区在湿度不太大和风速不是很小条件下适应性较好。

Study on the Applicability of PJ Model at Calculating Minimum Trap Frequency of Evaporation Duct

In order to study the applicability of PJ model,theories of evaporation duct and Paulus-Jeske model are briefly described.At the same time, the methods of measuring the evaporation duct on the sea and calculating of minimum trap frequency are introduced.The meteorological sensitivity of the minimum trap frequency calculated by Paulus-Jeske Model was analyzed.The method of using the minimum trap frequency as the standard to check the applicability of PJ model is presented.The results comparing of minimum trap frequency worked out by Paulus-Jeske model with the measured data,showed that the experimental results almost agree with the results of sensitivity analysis.The conclusion showed that PJ model would do a better work when the atmosphere humidity is not too high and the wind speed is not too small,will be obtained.