单矢量水听器DOA估计算法研究  

DOA Estimation Algorithm Based on Single Acoustic Vector Sensor

作　　者：江南[1] 黄建国[1] 李姗[2] 

机构地区：[1]西北工业大学航海工程学院,西安710072 [2]中国船舶重工集团公司750试验场,昆明650051

出　　处：《仪器仪表学报》2004年第z1期87-90,共4页Chinese Journal of Scientific Instrument

摘　　要：近年来,一种新型声传感器——矢量水听器引起了人们极大的关注。这种传感器不仅能获取声压这一声场的标量参数,而且能同时获取质点振速这一矢量参数,为完整地利用声场信息进行信号处理提供了充分的可能性。这里将单个矢量水听器理解为一个标量传感器阵列,根据平面波声场模型,按照阵列信号处理的原理对其输出的标量场和矢量场信息进行联合处理,构造了DOA估计算法,推导了算法原理,分析了算法的定向性能,并利用计算机仿真和海上试验数据对算法进行了验证。理论推导、仿真和试验结果均表明,该方法是一种有效的目标方位估计算法。Outputting the pressure and particle velocity of the acoustic field simultaneously,the single acoustic vector sensor can be treated as a scalar sensor array.Based on array signal processing theory,the pressure and particle velocity are processed jointly to construct a direction-of-arrival(DOA)estimation algorithm.Firstly,the expressions of the spatial spectra based on single acoustic vector sensor are derived to estimate the DOA.Then,the performance of the algorithm is analyzed.Lastly,computer simulations and sea tests are performed to validate the theoretical results.Both the theoretical analysis and the results of computer simulation and lake tests proved that the algorithm is an effective target azimuth estimation method.

关 键 词：矢量水听器 波达方向 空间谱 相 关 

分 类 号：TH7-55[机械工程—仪器科学与技术]