CAJ | 학술논문

为对深空网天线组阵中几种相关合成算法进行分析比较，构建了一种新的Simulink仿真模型。将其应用于某测控站天线组阵试验数据，验证了模型的可行性。在此仿真模型下，对Simple、Sumple和Matrix-free 算法进行了频标同源/频标不同源、弱信号/强信号、2/3/6个天线等组阵情况下的仿真分析。三种算法在频标同源情况下的合成效率均优于不同源的情况；强信号组阵情况下，三种算法的信噪比合成性能基本相当；Simple算法在6天线情况下，信噪比合成性能下降；Sumple算法在组阵的天线数目很少时，合成信噪比较低且不稳定，在天线数目较多时性能良好；Matrix-free算法性能稳健，合成效率始终大于95%。该Simulink仿真模型对于进行天线组阵信号相关算法的分析具有一定的价值。
위대심공망천선조진중궤충상관합성산법진행분석비교，구건료일충신적Simulink방진모형。장기응용우모측공참천선조진시험수거，험증료모형적가행성。재차방진모형하，대Simple、Sumple화Matrix-free 산법진행료빈표동원/빈표불동원、약신호/강신호、2/3/6개천선등조진정황하적방진분석。삼충산법재빈표동원정황하적합성효솔균우우불동원적정황；강신호조진정황하，삼충산법적신조비합성성능기본상당；Simple산법재6천선정황하，신조비합성성능하강；Sumple산법재조진적천선수목흔소시，합성신조비교저차불은정，재천선수목교다시성능량호；Matrix-free산법성능은건，합성효솔시종대우95%。해Simulink방진모형대우진행천선조진신호상관산법적분석구유일정적개치。
To compare and analyze the correlating and combining algorithms of antenna arraying in deep space network( DSN) ,a new Simulink simulation model is established. Application of the model in the tes-ting data of a service TT&C station has proved its feasibility. In the condition of same frequency source and different one,strong signals and weak signals,2/3/6 antennas,the simulations of the three algorithms,Sim-ple,Sumple,and Matrix-free are carried out on the model. The results show that all the three algorithms have better combining efficiencies in the condition of same frequency source versus different frequency source,and have basically the same signal-to- noise ratio( SNR) combining performance if the signals of antenna arraying are strong. The performance of Simple algorithm drops in the case of 6 antennas. On the contrary,the performance of Sumple algorithm is relatively bad and unstable in the condition of little arra-ying antennas while it is better and better when the number of antennas increases more and more. Matrix-free algorithm behaves well and stablely,and it can always give a good combining efficiency greater than 95%. The Simulink model for correlating and combining algorithms has a certain value for the analysis of correlating algorithms in antenna arraying.