摘要
为了克服现有电磁辐射检测仪测量精度低的难题,基于改进的自适应滤波算法,设计了一种高精度电磁辐射检测仪。根据电磁辐射信号的特点,对自适应滤波算法进行改进;利用改进的滤波器对放大后的电磁信号进行自适应滤波处理,有效滤除电磁信号中的电磁噪声干扰,提高电磁辐射测量的精度;最后经过运算处理,通过液晶显示器显示信号强度。试验结果验证了该检测仪具有较高的精度,在工程应用方面具有重要价值。
To overcome the low measurement accuracy problem of existing electromagnetic radiation detectors, the high precision electromagnetic radiation detector based on improved adaptive filtering algorithm is designed. In accordance with the features of electromagnetic radiation signal, the adaptive filtering algorithm is improved; by adopting improved fiherj the amplified electromagnetic signal is processed with adaptive filtering, the electromagnetic noise interference in electromagnetic signal is effectively filtered; thus the accuracy of electromagnetic radiation measurement is increased. The signal strength is then displayed on the liquid crystal display { LCD ） after operation processing. The experimental results verify that the detector possesses high precision, so it is worth to be introduced into engineering applications.
出处
《自动化仪表》
CAS
北大核心
2013年第4期80-83,共4页
Process Automation Instrumentation
基金
中央高校自主科研青年基金资助项目(编号:JUSRP111A48)
关键词
LMS算法
自适应滤波器
电磁辐射
电磁干扰
测量精度
LMS algorithm Adaptive fiher Electromagnetic radiation Electromagnetic interference Measurement accuracy
