激光脉冲法背温信号中噪声信号的滤除方法  

Method of Signal Noise Filter in Rear Surface Temperature Curves With Laser Pulse Method

作　　者：辛春锁[1] 何小瓦[1] 杨阳[1] 

机构地区：[1]航天材料及工艺研究所,北京100076

出　　处：《宇航材料工艺》2011年第2期117-119,共3页Aerospace Materials & Technology

摘　　要：针对激光脉冲法背温信号中存在的噪声干扰,通过频谱分析确定了噪声信号的频率范围,设计了相应的FIR数字滤波器,并对滤波后存在的残留噪声进行了递推平滑滤波。滤波前后的数据对比表明,该方法能有效滤波背温信号中的噪声。With respect to the noise interference in rear surface temperature curves with laser pulse method,frequency range of noisy signal was ascertained through frequency analysis method,a corresponding FIR filter is designed to reduce the noise interference in rear surface temperature curves,and a recursive smoothing filter was used to reduce residual noise.The compared results before and after filtering show the method is effective to reduce the noise interference in rear surface temperature curves with laser pulse method.

关 键 词：FIR滤波器 激光脉冲法 滤波 背温信号 

分 类 号：TN713.7[电子电信—电路与系统]