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一种复杂环境下的战术通信信道仿真方法 被引量:4
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作者 范喜全 匡镜明 《系统仿真学报》 EI CAS CSCD 北大核心 2008年第9期2502-2504,2510,共4页
现代战场复杂的地形环境和电磁环境是影响战术通信性能的主要因素。针对这些因素,在建立不规则地形环境模型、战术通信设备模型的基础上,构建了复杂环境下的战术通信信道仿真平台,研究和探讨了战术无线通信信号在此环境中的传播路径、... 现代战场复杂的地形环境和电磁环境是影响战术通信性能的主要因素。针对这些因素,在建立不规则地形环境模型、战术通信设备模型的基础上,构建了复杂环境下的战术通信信道仿真平台,研究和探讨了战术无线通信信号在此环境中的传播路径、接收功率和路径损耗等特性,并给出了仿真分析结果。 展开更多
关键词 战术通信 垂直平面模型 传播路径 路径损耗
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Improvement of the One-dimensional Vertical Advection-diffusion Model in Seawater
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作者 王保栋 单宝田 +1 位作者 战闰 王修林 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2003年第1期34-39,共6页
The classical 1-D vertical advection-diffusion model was improved in this work. The main advantages of the improved model over the previous one are: 1) The applicable condition of the 1-D model is made clear in the im... The classical 1-D vertical advection-diffusion model was improved in this work. The main advantages of the improved model over the previous one are: 1) The applicable condition of the 1-D model is made clear in the improved model, in that it is substantively applicable only to a vertical domain on which two end-member water masses are mixing. 2) The substitution of parameter f(z) in the equation of the classical 1-D model with end-member fraction f 1z makes the model more precisely and easily solved. 3) All the terms in the improved model equation have specific physical meanings, which makes the model easily understood. Practical application of the improved model to predict the vertical profiles of dissolved oxygen and micronutrients in abyssal ocean water of the North Pacific proved that the improvement of the 1-D advection-diffusion model is successful and practicable. 展开更多
关键词 D advection-diffusion model vertical profile dissolved oxygen NUTRIENT North Pacific
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