基于自适应直耦降噪的金属探测信号处理方法  

Method of Metal Detecting Signal Processing Based on Adaptive Direct Coupled Noise Reduction

作　　者：汤敏丽[1] 彭天昊[2] 

机构地区：[1]凯里学院教务处,贵州凯里556011 [2]凯里学院信息工程学院,贵州凯里556011

出　　处：《科技通报》2014年第6期73-75,共3页Bulletin of Science and Technology

摘　　要：金属目标探测在应用领域中受环境噪声干扰大,目标金属壳体反射信号和噪声直耦信号叠加,导致金属目标探测准确度提高困难。提出一种基于自适应噪声抵消降噪算法和能量检测的金属目标探测方法。借鉴相位检波设计能量检测算法最终完成针对金属外壳小车的目标探测系统设计。外场系统测试和仿真实验分析得出目标在各种距离和速度下通过探测样机的探测特性测试结果,测试结果展示了系统具有较好的探测性能,探测反射信号与距离的关系跟磁场衰减的理论值高度吻合,达到预期的检测效果。According to the application environment of metal target, the interference noise was strong, and metal reflection signal added to the direct coupling noise, resulting in difficult to improve the accuracy of metal target detection. An im-proved metal target detection method based on adaptive direct coupled noise reduction and energy detection algorithm was proposed.The metal target detection system for the car was designed completely. Experiments and simulations were imple-mented with different distance and different speed for the metal car and detection device. The simulation results shows that the system has good detection performance and the relationship between the detected reflected signal and distance is in ac-cordance with theoretical value of magnetic field attenuation. It meets to the predicted detection effect.

关 键 词：金属目标 直耦噪声 能量检测 信号处理 

分 类 号：TN98[电子电信—信息与通信工程]