数据链路多径传输模型的物理映射方法研究  

Study on Physical Mapping Method of Data Link Multipath Transmission Model

作　　者：张巍[1] 张麟兮[1] 郭淑霞[1] 刘宁[1] 

机构地区：[1]西北工业大学无人机特种技术国家级重点实验室,陕西西安710065

出　　处：《计算机仿真》2010年第4期28-30,146,共4页Computer Simulation

摘　　要：根据无人机数据链路的多径传输要求,针对在传输中电磁波衰落,为保证精度,在微波暗室中建立与之相关的分析模型,采用仿真手段有助于提高无人机数据链的有效性。通过对数据链路的实际传输场景(散射点属性等)以及信道传输模型的多径参数(时延、衰落、多普勒频移)分析,解算出该场景下接收点处的合成功率,并在微波暗室中,依据仪表的衰落仿真机理和暗室环境中求得的合成功率。用两种方法对场景进行仿真,可从中选取一种精度更好的方法进行仿真验证有效性,实现了多径传输链路在微波暗室的准确物理映射。According to the requirements of UAV data link muhi - path transmission, a related model is estab- lished in the microwave anechoic chamber, which is helpful to improve UAV data link effectively. In this paper, ac- tual transmission scenes of data link such as properties of Scattering point and so on, and the multi - path parameters of the channel transmission model, such as delay, fading, Doppler shift, are analyzed The synthetic power of recep- tion point is calculated in this scene. In the anechoic chamber, firstly, two methods are put forward based on the fa- ding simulation principle of the instrument, anechoic chamber environment and the synthetic power of reception point to simulate this scene, and then a better method is chosen to validate its effectiveness. So it can achieve the accu- rate mapping of multi - path transmission link in the anechoic chamber .

关 键 词：两径模型 物理映射 多径衰落 散射 

分 类 号：TN95[电子电信—信号与信息处理]