Hardware realization of the double-channel IF digital receiver
Weijian Si · Applied science and technology · 2009
In the domain of ECM,the information of radar signals is an important parameter for signal choosing,menace recognizing and guidance ECM.Comparing with traditional analogue counterparts,digital receivers are of better resolution,reliability,anti-jamming and agility.Digital receivers with wide bandwidth,high dynamic range and sensibility are widely used in ECM.This paper demonstrates a hardware design and realization of the double-channel intermediate frequency(IF)digital receiver based on the theory of direct IF sampling and digital down-conversion.After the high speed A/D sampling,the analog signals were processed by the FPGA directly.The result shows that the system has fine performance such as lower cost,higher precision and simpler structure,and it can meet the actual demands.