基于F-K分析的圆形传感器阵列布设  

Circular sensor array layout based on F-K analysis

作　　者：钟琳 苏新彦[1] Zhong Lin;Su Xinyan(Shanxi Provincial Key Laboratory of Information Detection and Processing,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学信息探测与处理山西省重点实验室,太原030051

出　　处：《电子测量技术》2021年第20期94-98,共5页Electronic Measurement Technology

摘　　要：针对地下浅层震源定位中地表噪声过大、目标信号较弱的问题,设计了基于F-K分析的圆形传感器阵列布设方案。选用圆形阵列作为研究对象,利用波束形成法估算阵列的频率-波数谱(F-K谱)。在100m×100m的传感器布设区域内,通过对比分析圆形阵列在不同传感器测点和不同阵列孔径的设置对F-K谱的影响,选择最佳的传感器测点数量和阵列孔径。最后,研究结果表明在100m×100m的区域内,阵列孔径为180m的9元传感器圆形阵列的F-K谱效果最好,即对目标信号的拾取效果最好,对慢度信号分辨率更强,是阵列模型的最佳选择。In order to solve the problems of large surface noise and weak target signal in shallow underground source location,a circular sensor array layout scheme based on F-K analysis is designed.The frequency-wave number spectrum(F-K spectrum)of circular array is estimated by beamforming method.In the sensor layout area of 100m×100m,the influence of the circular array on the F-K spectrum is compared and analyzed by setting different sensor measurement points and different array apertures to select the best number of sensor measurement points and array apertures.Finally,the research results show that in the area of 100m×100m,the circular array of 9-element sensor with an array aperture of 180mhas the best F-K spectrum effect,that is,it has the best pickup effect on the target signal and stronger resolution on the slowness signal,which is the best choice for the array model.

关 键 词：阵列设计 波束形成 F-K谱 

分 类 号：TP2[自动化与计算机技术—检测技术与自动化装置]