CAJ | 학술논문

空间谱估计是现代信号处理研究的重要课题,对于非相干信号的DOA估计,采用MUSIC就能取得好的分辨效果,对此算法进行了简要介绍.对于广泛存在的相干信号,直接采用MUSIC则存在很大的模糊性甚至失效,为了准确地进行DOA估计,必须经过预处理解相干.针对传统的空域平滑处理,提出了均分阵元的空间平滑技术,经仿真验证,新方法可行、有效,最后分析了该方法的优势和弊端.
공간보고계시현대신호처리연구적중요과제,대우비상간신호적DOA고계,채용MUSIC취능취득호적분변효과,대차산법진행료간요개소.대우엄범존재적상간신호,직접채용MUSIC칙존재흔대적모호성심지실효,위료준학지진행DOA고계,필수경과예처리해상간.침대전통적공역평활처리,제출료균분진원적공간평활기술,경방진험증,신방법가행、유효,최후분석료해방법적우세화폐단.
The spatial spectrum estimation is an important issue of the modern signal processing. MUSIC is a good solution in DOA estimation of incoherent signals. This algorithm is briefly introduced here. If MUSIC algorithm is used to process wide?spread existing coherent signals directly,vagueness and even failure may occur. In order to estimate the DOA accurately,a pre?treatment must be undertaken to decoherence. The spatial smoothing technique based on split array element is proposed according to the traditional spatial smoothing processing. A simple analysis about the advantages and disadvantages of the method is given. Simulation result shows that the method is feasible and effective.