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本文从信号最佳接收机设置的基本考虑出发，讨论由窄带信号正交采样的 ＦＥＴ运算实现目标回波相关检测的作用原理。在此基础上，提出了一个适用于多通道实时检测的“ＤＥＬＴＩＣ—ＦＦＴ信号处理方案”。在该方案中，由ＤＥＬＴＩＣ系统完成多通道接收信号的连续动态存储，ＦＦＴ专用计算机依次对各通道的待测目标回波进行快速复相关运算，从而实时地测定方位，距离和相对速度等目标参数。
Based on the basic consideration of setting the optimal signal receiver, this paper discusses the principle of detecting the target echo by FET operation of quadrature sampling of narrowband signal. On this basis, a “DELTIC-FFT signal processing scheme” suitable for multi-channel real-time detection is proposed. In this scheme, the continuous dynamic storage of multi-channel received signal is completed by DELTIC system. The FFT dedicated computer performs rapid complex correlation operation on the target echo of each channel in turn, so as to determine the target parameters such as bearing, distance and relative speed in real time .