CAJ | 학술논문

基于水下运动目标辐射噪声线谱数学模型，通过分析水下目标辐射噪声特征等信息实现。基于经典谱与现代谱估计的联合估计法提取水下目标辐射噪声线谱特征，首先估计采集数据的功率谱，得到估算功率谱图；分析功率谱图，确定线谱存在的大致区域，再利用线性调频z变换进行频谱细化，精确估计线谱位置。
기우수하운동목표복사조성선보수학모형，통과분석수하목표복사조성특정등신식실현。기우경전보여현대보고계적연합고계법제취수하목표복사조성선보특정，수선고계채집수거적공솔보，득도고산공솔보도；분석공솔보도，학정선보존재적대치구역，재이용선성조빈z변환진행빈보세화，정학고계선보위치。
Based on the line-spectrum mathematical model of radiation noise pattern of underwater moving target, we can analyse the characteristic of underwater target radiated noise information such as the implementation. Joint estimation method which is based on the classical and modern spectrum estimation can collect the line-spectrum characteristics of underwater target radiation noise. First the power spectrum to estimate the sampling data, and then estimation of power spectrum diagram is obtained. Analysis of power spectrum diagram, we can determine the line-spectrum which is roughly the area, then we can use the chirp z transform frequency spectrum refinement, whicn can accurately estimate the position of line-spectrum.