Research Of Digital Channelized Receiver

Channelized frequency-measurement receiver is one kind of highly promising frequency-measurement receiver in electronic-counterment system at present,and also widely used in the radar jamming-counterment.Such receiver is a sort of frequency-non-searching and instant frequency-measurement receiver,the accuracy of frequency-measurement,frequency absolution and sensitivity could achieve the level of narrow-band searching superheterodyne receiver without exception.channelized receiver possesses 100% interception and capture probability of wide-band receiver,could adapt diversified system radar signal.the receiver not only could adapt the radar signal of normal system,and also the new system radar signal,such as frequency diversity,multi-frequency,phase-modulation, staggered PRF,gdfgdsgfdggfsgdg, frequency agility and pulse compression.With the rapid development of high speed A/D and DSP, it is absolutely possible of that the digital technology could replace the analog channelized technology. digital channelized receiver samples the radar signal at intermediate frequency,could not only withhold the amplitude information of the signal,and also reserve the phase information. The receiver not only could the frequency information of the radar signal,and also could detailly analyse the characteristic of the radar signal.Herewith it is important to work over the wide-band digital channelized receiver in ECM.This paper not only introduces the performance of the digital channelized receiver,and also realizes one kind system scheme at length, and also analyses some index.Finally this paper prospects the development of the digital channelized receiver.