无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2014年
6期
54-56
,共3页
邱丙益%金卫同%盛莹%刘春茂
邱丙益%金衛同%盛瑩%劉春茂
구병익%금위동%성형%류춘무
Link16%相关性%多径%软扩频
Link16%相關性%多徑%軟擴頻
Link16%상관성%다경%연확빈
Link16%correlation%multipath%tamed spread spectrum
在研究Link16消息同步机制的基础上，从Link16解扩解调的方式入手，仿真分析了多径效应对Link16接收信号相关性的影响，推导了二径模型下Link16接收端输出检测相关峰值的计算公式，指出其影响关键因素为二径时延和反射路径增益，得出了由于多径干扰使包络检波器输出主瓣相关峰值降低，引起同步段数据丢失，进而导致传输数据包丢失的结论，通过试验对该现象进行了验证。
在研究Link16消息同步機製的基礎上，從Link16解擴解調的方式入手，倣真分析瞭多徑效應對Link16接收信號相關性的影響，推導瞭二徑模型下Link16接收耑輸齣檢測相關峰值的計算公式，指齣其影響關鍵因素為二徑時延和反射路徑增益，得齣瞭由于多徑榦擾使包絡檢波器輸齣主瓣相關峰值降低，引起同步段數據丟失，進而導緻傳輸數據包丟失的結論，通過試驗對該現象進行瞭驗證。
재연구Link16소식동보궤제적기출상，종Link16해확해조적방식입수，방진분석료다경효응대Link16접수신호상관성적영향，추도료이경모형하Link16접수단수출검측상관봉치적계산공식，지출기영향관건인소위이경시연화반사로경증익，득출료유우다경간우사포락검파기수출주판상관봉치강저，인기동보단수거주실，진이도치전수수거포주실적결론，통과시험대해현상진행료험증。
Through analyzing Link16 demodulation solution,the influence of multipath effect on the correlation of received signal is simulated and analyzed based on Link16 message synchronization mechanism. In 2-diameter model, the formula of calculating the correlation peak of output signal is derived.It is concluded that the key influencing factors are time delay and reflection path gain,and due to multipath interference,the output correlation peak value of main lobe envelope detector is reduced,which causes data loss in synchronization segment,resulting in data packets lost.At last,the phenomenon is verified through experiment.
