Abstract The method of temperature measurement by acoustic pyrometers is based on the combination of acoustic wave and CT technique,and the accurate measurement of acoustic wave time of flight is the key link in its application.In the complex reverberation background condition,the traditional correlation algorithm could not overcome convolution interference, it may cause the multi-correlation peak values.In the application of acoustic pyrometer system,the generalized cepstrum correlation algorithm can transform the product and convolution homomorphism system to linear system by using cepstrum operation,thereby,this algorithm can separate product signals or convolution signals,filter the product and convolution interferences.The experimental result and theory proved that,compared to the traditional correlation function analytical algorithm,the new cepstrum algorithm can overcome the convolution interferences from reverberation,and sharpen peak value,thereby estimate the time delays of signals.
LI Cheng-zhi,SHAO Fu-qun,KAN Zhe. Application in Acoustic Pyrometer System Based on Generalized Cepstrum Correlation Algorithm[J]. Acta Metrologica Sinica, 2013, 34(1): 22-26.
［1］田丰,孙小平,邵富群.基于高斯函数与正则化法的复杂温度场图像重建算法研究［J］.中国电机工程学报,2004,24(5):212-220．
［2］Sielschott H,Wübbeling F.Waveform inversion in acoustic pyrometry［C］//The 1st World Congress on Industrial Process Tomography,Buxton,UK,1999.
［3］邵富群,吴建云.声学复杂温度场的重组测量［J］.控制与决策,1999,14(2):121-124.
［4］皇甫堪,陈建文,楼生强.现代数字信号处理［M］.北京:电子工业出社,2003.
［5］朱家兵,洪一.基于复倒谱技术的无源雷达直达波提纯方法［J］.现代雷达,2007,29(8):75-78.
［6］殷业,赵松龄,盛胜我.声信号时延的倒谱相关分析［J］.同济大学学报,1996,24(6):684-690.
［7］王卫国,蔡俊武,曾德贤,等.GPS多路径信号的广义倒谱相关函数分析法［J］.装备指挥技术学院学报,2008,19(6):71-75.
2013, Vol. 34 
