A method of estimating shortwave communication frequency is presented: firstly,analyze the receiving power loss of the air-borne shortwave antenna;secondly,suggest some frequency by the software of W6ELProp 2.
根据短波通信的特点建立了短波通信链路模型,并在此模型的基础上分析了短波通信的信道损耗;提出了一种短波通信频点的预测方法,即分析某型机载短波天线的接收功率损耗,应用软件W 6ELProp 2。
The influence to radar received polarization loss caused by it’s spacial variety is discussed.
分析了理论正交偶极子天线和实际干扰机天线的空域极化特性;讨论由于天线在空域的极化变化及极化不纯对雷达接收极化损耗的影响,并进行了相应的计算机仿真。
