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研究了基于专用芯片的高速实时ＦＦＴ系统的点数和精度问题，分析了统一的ＦＦＴ算法与ＦＦＴ专用芯片的级联问题；定标算法与ＦＦＴ专用芯片的精度问题．提出了一种高速实时ＦＦＴ系统的实现方案和性能测试方法，并根据实测数据讨论了ＦＦＴ系统的精度．试验结果证明了理论分析的正确性．
The problem of the number of points and the precision of high-speed real-time FFT system based on ASIC is studied. The problem of concatenation of uniform FFT algorithm and FFT dedicated chip is analyzed. The precision of calibration algorithm and FFT dedicated chip are analyzed. A high-speed real-time FFT system implementation scheme and performance testing methods are proposed. The accuracy of the FFT system is discussed based on the measured data. The test result proves the correctness of the theoretical analysis.