摘要
在非战场环境下,无人直升机数据链系统也会受到多种因素的干扰,如白噪声、多径效应等。为测试数据链应对这类干扰的能力,利用Matlab软件搭建了无人直升机数据链抗干扰仿真模型。该仿真模型包含无人直升机数据链中编码解码、扩频解扩、调制解调等典型数据处理模块。仿真结果表明,通过信源信道编码能有效提高无人直升机数据链的抗干扰能力。
Even in non-battlefield environment,Unmanned Helicopter＇s data link always suffers jamming such as white noise and multipath effect. A emulational model of unmanned helicopter＇s data link on Matlab was built to test the data link＇s anti-jamming ability,which contained the basic modules of Unmanned Helicopter＇s data link such as encoding and decoding,spread spectrum and despread spectrum,modulation and demodulation. The result of emulation showed that the source encoding and channel encoding could improve anti-jamming ability of Unmanned Helicopter＇s data link effectively.
出处
《直升机技术》
2017年第4期29-33,共5页
Helicopter Technique
关键词
无人直升机
数据链路
抗干扰
仿真
误码率
Unmanned Helicopter
data link
anti- jamming
emulation
miscoding rate
