探空信号的信道建模及仿真  

Modeling and Emulation on Channel of Radiosonde Signal

作　　者：程礼富[1] 许屏[1] 尹邦坤[2] 

机构地区：[1]解放军理工大学气象学院,江苏南京211101 [2]武汉军械士官学校,湖北武汉430000

出　　处：《无线电工程》2009年第10期16-18,共3页Radio Engineering

摘　　要：从分析探空信号的传输、传播路径及其信道的特点开始,建立了探空仪信号传输的两径信道模型,并根据历史探空数据给出适当的信道衰减参数和信号传输函数。利用Matlab对建立的模型进行仿真并分析结果,得到的信道衰减参数曲线基本符合实际情况。结果还表明地面反射信号引起的快衰落对探空信号传输系统造成了很大的影响,是系统误码率高的主要原因,这为探空信号的抗干扰性能分析提供依据。A two tray channel model was built based on the analyses of the characteristics of the radiosonde communication system and its signal transmit path in this paper. And probable channel parameter and transmit function of the signal was given by historical detect data. This channel model was emulated in Matlab;the curve gained was basically accord with really circs. The result of this emulation also proves that the reflected signal of ground influenced the communication of the radiosonde, and it offered a proof to analyze the anti-jamming performance of the radiosonde communication.

关 键 词：探空仪 无线信道 两径模型 信道仿真 

分 类 号：TN713.5[电子电信—电路与系统]