CAJ | 학술논문

海底混响是主动声呐的主要干扰之一，分析海底混响信号的空间相关特性是抗海底混响技术研究的基础。本文依据混响信号的空间相关特性，从理论上解释海底混响信号空间相关半径的定义，利用实验数据研究了在不同海底底质情况下混响信号空间相关半径变化规律以及不同底质混响信号强度的变化。研究表明不均匀海底底质情况下，散射体颗粒增大，混响信号空间相关半径减小且底质较硬时混响信号较强。
해저혼향시주동성눌적주요간우지일，분석해저혼향신호적공간상관특성시항해저혼향기술연구적기출。본문의거혼향신호적공간상관특성，종이론상해석해저혼향신호공간상관반경적정의，이용실험수거연구료재불동해저저질정황하혼향신호공간상관반경변화규률이급불동저질혼향신호강도적변화。연구표명불균균해저저질정황하，산사체과립증대，혼향신호공간상관반경감소차저질교경시혼향신호교강。
The reverberation is one of the main interferences for active sonar system, so the analysis of spatial correlation characteristics for underwater reverberation is the basis of the anti-reverberation technology. Based on the spatial cor-relation characteristics of reverberation, the definition of the spatial correlation radius of seafloor reverberation is ex-plained in theory, and the variations of the spatial correlation radius and the reverberation intensity with different seaf-loor sediments are studied by use of experimental data. Under non-uniform seafloor sediments, the results show that the spatial correlation radius of seafloor reverberation decreases as the scattering particle size increases, and the reverbera-tion intensity increases as the seafloor sediment hardens.