摘要
为探测反辐射无人机,采用被动声探测系统是一种有效的方法.根据系统探测要求,基阵选择采用结构简单的线列阵和各向波束均匀的圆弧阵组合成半圆柱型传声器阵列对飞机噪声进行接收,在阵列设计时,考虑反辐射无人机螺旋桨噪声的频率特点,针对阵列指向性受影响的因素,对阵元数、阵列长度、频率响应等参数进行了优化设计,分析结果表明半圆柱型基阵在波瓣宽度和增益上满足系统对无人机的探测要求.
The passive acoustics detection system is available for detecting the anti-radiation UAV. According to the requirements for the system, a half cylinder mike array that is made up of the simple linear array and the circular array with the even directivity at different azimuth was used in the array to receive the plane noise. In the array design,aimed at the frequency characteristics of the propeller noise in the anti-radiation UAV and the factors which influence the directivity of the array, several parameters were analyzed and selected for optimal design, such as the array element number, the array length, the frequency response and so on. As a result, the beam width and gain of the half cylinder array are enough for the system requirements detection of the UAV.
出处
《空军雷达学院学报》
2006年第1期44-47,50,共5页
Journal of Air Force Radar Academy
关键词
被动声探泖
反辐射无人机
传声器阵列
指向性
passive acoustics detection
anti-radiation UAV. microphone array
directivity
