CAJ | 학술논문

垂直阵接收到可以在时间上区分的引导声源信号和未知声源信号,通过对已知引导声源信号和未知声源信号进行相关比较,结合波导不变量β构建水平虚拟接收阵,可以对海底水平变化环境下目标声源进行距离测定.在宽带接收的情况下,只需要很少的环境信息就能对目标进行测距,与传统的匹配场处理相比,不需要复杂的声场建模和计算,而且降低了对环境参数信息的获取要求,体现了环境自适应信号处理.首先介绍虚拟接收的原理和方法,通过数值模拟和2004年实验数据分析,利用引导声源可对其它声源进行距离测定,误差在10%左右.
수직진접수도가이재시간상구분적인도성원신호화미지성원신호,통과대이지인도성원신호화미지성원신호진행상관비교,결합파도불변량β구건수평허의접수진,가이대해저수평변화배경하목표성원진행거리측정.재관대접수적정황하,지수요흔소적배경신식취능대목표진행측거,여전통적필배장처리상비,불수요복잡적성장건모화계산,이차강저료대배경삼수신식적획취요구,체현료배경자괄응신호처리.수선개소허의접수적원리화방법,통과수치모의화2004년실험수거분석,이용인도성원가대기타성원진행거리측정,오차재10%좌우.
Both the guide source signal and the object signal received by a vertical array are time separable. By correlating the two signals to construct a horizontal virtual array and combining with the waveguide invariant β, the range of object under seabed varying environment can be determined. With the wideband receiving array, locating an object source only needs little environment information. Compared with traditional match field processing (MFP), the complicated com-putation of match field is not needful and the requirement of environment parameters is reduced. So it is consistent with the concept of adaptive signal processing. In this paper, the theory and method of virtual receiving array is discussed. Through simulations and analysis of experimental data, the good result in determining object range can be obtained with an error of about 10%.