Design Of Sharing OFDM Signal For Radar And Communication System

With the rapid development of mobile communication technology.The increase of the information transmission rate makes the bandwidth of the communication signal broadened,the digitization degree gradually increased,and the functions of communication system greatly expanded.Communication-radar integration has become a new research hotspot in information field,and the design of sharing signal communication and radar system is one of the key technologies.Based on this,this paper mainly studies the radar-communication integration signal waveform based on OFDM signal in communication system,and the problem of estimating the target parameters from the multi-carrier echo.The specific work of this paper is as follows:Firstly,the waveform of the OFDM signal and the possible influences to detect moving targets caused by data structure are analyzed,and the corresponding solution to the problem are given.Secondly,this paper analyzes the detection range of OFDM signal to make sure that the range meets the need of the application background,and further analyzes the target detection performance and communication performance of various-coded OFDM signals.Finally,the echo model of moving targets based on OFDM signal is studied,and the parameter estimation function are deduced theoretically.The algorithm of parameter estimation is given.Then,the feasibility of the algorithm is verified by the simulation.After the advantages and some limitations of the algorithm are both pointed out in simulation,this paper improves the limitation of the algorithm through the common methods.The integrated detection performance of the signal and the algorithm is analyzed by using the coded OFDM signal,and the validity of the algorithm is further confirmed when the verification of the measured data is given.