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快速傅里叶变换(FFT)处理机是最近十年内发展起来的.我们曾为天津电子仪器厂和国家海洋局五所的 FA1型实时信号分析仪进行了方案设计,已于1979年研制成功.该机适宜于处理音频信号,1024点的 FFT 处理时间为40ms.为了满足更高频信号的要求,我们正和上海573厂共同研制速度更快的626型处理机,1024点的 FFT 处理时间约为5ms,现正进行总调.由于国内已有不少单位介绍过这类处理机的设计,因此本文仅就626机如何提高处理速度的问题作重点介绍.
Fast Fourier Transform (FFT) processor was developed in the last ten years.We have designed the FA1 real-time signal analyzer for five of Tianjin Electronic Instrument Factory and State Oceanic Administration, which was developed in 1979. The The machine is suitable for processing audio signals, 1024 FFT processing time of 40ms. In order to meet the requirements of higher frequency signals, we are working together with the Shanghai 573 plant to develop faster 626-type processor, 1024 point FFT processing time is about 5ms , The total transfer is being carried out.Because many domestic units have introduced the design of such processors, this article only focuses on how to improve the processing speed of 626 machines.