Research On Integrated Waveform Of Radar Communication Based On Distributed Networked Electronic Information System

Distributed networked electronic information system is an electronic information system different from the traditional electronic information system.It adopts the distributed station mode,adopts the work mode of multiple transmission,transmission and reception separation,integrated of detection and confrontation,which can solve the three major threats of stealth aircraft attack,anti-radiation missile attack and electronic attack faced by traditional radar.The system characteristics of the transmission and reception separation and the multi-receiving work mode make the realization of the radar communication integration of the distributed networked electronic information system more different than that of the traditional electronic information system.Based on the system characteristics and basic working principle of distributed networked electronic information system,this paper proposes an radar communication integrated signal which is OFDM signal modulated by Zadoff-Chu sequence which is suitable for distributed networked electronic systems,and studies the signal processing algorithm and performance of the integrated signal.The main work and innovations are as follows:The article analyzes the main implementation methods and applicable fields of radar communication integration of traditional electronic information systems.The system characteristics and working principle of distributed networked electronic information system are analyzed.The main differences between it and traditional electronic information system are stated.The main performance requirements of it's radar communication integration are summarized.The detection characteristics and diversity characteristics of OFDM signals based on Zadoff-Chu sequence modulation are studied in this paper.The matching characteristic detection algorithm and Doppler tolerance characteristic detection algorithm are proposed to study the matching characteristics and Doppler tolerance characteristics of OFDM signal shape modulated by Zadoff-Chu sequence.An algorithm for calculating the effective sampling length of modulation code of OFDM signal modulated by Zadoff-Chu sequence based on the number of distributed networked electronic information system stations is proposed.The paper proposes a radar communication integrated signal waveform based on OFDM signal modulated by Zadoff-Chu sequence.Combined with the characteristics of integrated signals,an integrated signal processing algorithm is proposed,including the integrated signal communication decoding algorithm and the integrated signal detection signal echo processing algorithm.Finally,combined with the distribution properties and working characteristics of distributed networked electronic information system,and study the influence of variousparameters of integrated signal on detection performance or communication performance.The performance of the integrated signal is verified by the simulation of receiver receiving the integrated signal in the "four-in-one-out" working state.