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数字下变频是中频数字接收机的关键技术之一,适用于高采样率、大带宽场合的数字下变频器,可由多DSP处理机来实现。通过实验证明这种下变频器可以满足某雷达对抗侦察数字接收机实时数字下变频的需要。
Digital down conversion is one of the key technologies of IF digital receiver. It is suitable for digital down-converter with high sampling rate and large bandwidth. It can be realized by multiple DSP processors. Experiments show that this downconverter can meet the needs of a radar to reconnaissance digital receiver real-time digital downconversion.