强噪声定向驱散有生目标的仿真研究  

Research on Simulation of Directivity of Dispersion by Strong Noise

作　　者：董旭丹[1] 翟晓军 

机构地区：[1]武警工程大学装备工程学院,陕西西安710086

出　　处：《计算机仿真》2016年第1期12-15,111,共5页Computer Simulation

摘　　要：在处置突发性事件过程中,强噪声可以有效地定向驱散非法聚集的闹事人群。核心在于噪声信号的高指向性传播,关键因素是换能器,换能器阵列相关参数的确定就至关重要。在Matlab平台上选取不同的超声波频率和单个换能器直径的模型,分别进行噪声传播指向性仿真,对比分析,确定选取理想的超声波频和换能器尺寸;选取换能器平面阵列不同的阵元间距,进行噪声驱散的定向性图像仿真,结合实战需求对比确定出适合噪声驱散装备应用的换能器阵列参数。进行噪声驱散声压级计算,验证噪声驱散效能可以满足要求。Illegal riot crowd can be dispersed effectively by directional non-fatal attacks of strong noise. The core lies in the spread of noise signal with high directivity, and the key factor is the transducer. So it is important to deter- mine related parameters of the transducer. The influence on directivity is researched based on image simulations, and they could be determined about the appropriate ultrasonic frequency and single transducer diameter. The suitable pla- nar array of transducers for equipment is pointed out with research about the influence on directivity of different arrays of transducers. The effectivity of dispersion is made sure by calculations of pressure level about the noise.

关 键 词：强噪声 换能器 平面阵列 指向性 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]