Research On Key Technologies Of Digital Channelized Jammer

The modern electronic battlefield environment is increasingly complex and changing.New radar signal modulation methods are more diverse and modulation types are more dexterous.At the same time,radar signals are characterized by high-density,wide-band and multi-modulation types,in order to prevent our own targets from being exposed by enemy radars.A more effective jammer with reconnaissance capabilities have become a new force in electronic warfare.However,under the actual battlefield environment,the jamming signal emitted by the jammer will be fed back to the receiving terminate in a certain form,which will have a serious impact on the sensitivity of the receiving terminate.This article is based on this requirement,and studies the related isolation measures and proposes a kind of channelization isolation technology based on switch control matrix,through corresponding theoretical analysis and simulation verification,it can well meet the isolation requirements,and it has great expectations for the application prospect of the transceiver isolation system.This paper mainly studies the key technologies of digital channel jamming machine.Firstly,the efficient analyze of channelized receiver structure is discussed.The data obtained by high-speed sampling is more conducive to the storage and processing of radar detection signals through the channelization analysis structure,which provides important radar parameter information for the next step of jamming signals.In engineering applications,the rate at which the high-speed ADC samples is difficult to match with the actual hardware data processing capability.After the channelized deceleration processing,the signal processing capability per channel and the channelized parallel processing structure are dealt with in real time.There has been a great improvement in real-time processing.The generation of jamming signal is completed in the sub-channels after deceleration.This paper simulates multiple false target deception jamming,dense false target jamming,and trailing jamming.The resulting jamming signal is integrated into one broadband jamming channel,and then emit to the enemy radar.This paper adopts a corresponding analysis and derivation to adopt an efficient channelization synthesis structure.The system completes the channelization analysis and the efficient structure of channelization synthesis.In actual work,the interference signal emitted by the jammer is fed back to the reconnaissance reception through the coupling loop.In order to reduce the coupling interference,the reconnaissance receiver has to lower the sensitivity of the receiver,but it will also reduce the reconnaissance receiver's ability to detect weak signals.Therefore,there must be appropriate isolation between the interference transmitter and the reconnaissance receiver.After analyzing the relevant isolation measures at home and abroad,this paper proposes a channel-based isolation measure based on matrix control.Through theoretical analysis and simulation tests,it is verified that this isolation structure can be used when multiple radar detection signals and single radar detection signals are received,It can effectively isolate its own interference feedback.