短时傅里叶变换的FPGA实现及其应用  

Implementation and Application of Short-time Fourier Transform Based on FPGA

作　　者：王珍[1] 孙兰[1] 杨阳[1] 

机构地区：[1]大连大学机械工程学院,辽宁大连116622

出　　处：《噪声与振动控制》2012年第5期154-158,共5页Noise and Vibration Control

摘　　要：针对机械设备实时监控中信号处理的需要,在研究短时傅里叶变换Goertzel递推算法与该算法滤波器结构的基础上,提出一种基于FPGA(Field-Programmable Gate Array:现场可编程门阵列)的短时傅里叶变换实现方案,该方案充分利用FPGA嵌入式RAM资源、嵌入式乘法器及其灵活的IP Core功能。通过对仿真信号与实际工程信号的测试,验证了该方案的正确性。Aiming at the demand of signal processing in real-time machinery monitoring, a program of implementation of a short-time Fourier Transform with FPGA （Field Programmable Gate Array） based on the study on Goertzel recursive algorithm and its filter structure is presented in this paper. This program makes best use of embedded RAM resource, multiplier of FPGA and its flexible IP core function. The simulation signal and practical engineering signal are both tested, and the correctness of this program is verified.

关 键 词：振动与波 STFT FPGA GOERTZEL算法 滤波器结构 

分 类 号：TN911.7[电子电信—通信与信息系统] TP274[电子电信—信息与通信工程]