通过研究发现某些复数序列的性质在某种意义上特别有用 ,这种性质引出的数据处理导致一个序列的产生。该序列在时频两域都具有对称性 ,能够使用快速傅立叶变换 (FFT)算法处理 ,实现复数计算次数明显的减少 ,从而提高了信号处理的速度。给出了下标倒置复共轭序列和镜象对称复共轭序列的定义

A Processing Method Research of Real Signals Based on FFT and IFFF Li Chungaung Ai Chunting Chen Zuobing He GequnIn research we find that the properties of certain complex sequences are extrao rdinarily useful in the sense, data manipulation derive from this property resul t in a sequence. This sequence exhibits symmetry both in time and frenquence dom ain. We can use fast Fourier transform (FFT) algorithms to deal. It will decreas e complex calculate's times, and increase Fourier transform's speed.The index-r eversed complex conjugate sequence and the mirror symmetric complex conjugate se quence were defined.discrete Fourier transform (DFT); inverse disc rete Fourier transform (IDFT); fast Fourier transform (FFT); index-reverse d complex conjugate sequence; mirror symmetric complex conjugate sequence