Research On Radar Communication Integrated Signal Optimization Scheme And Performance Analysis

With the development and progress of wireless technology,mankind has a more extensive demand for data transmission and processing in the information age.At present,the national strategy has been devoted to the development of the aviation and air forces,and the design of aviation equipment has also evolved to a lighter and smaller direction.The equipment's integration and portability put forward more stringent requirements.Therefore,the research focus of today is gradually approaching to function integration,and the integration of radar communication is a typical direction in this respect.In the integrated design,the signal can be shared in real time,but also can reduce the size of the equipment,enhance portability.This article revolves around the theme of Integrated Waveform Program,focuses on the study and improvement of two integrated programs:The first one is the MSK-LFM signal integration scheme based on the radar signal carrier.According to the development tendency of the integrated communication radar,the MSK and LFM signals are integrated.The theoretical simulation proves the feasibility of the scheme.By analyzing the integrated signal The bit error rate and fuzzy function diagram to evaluate its performance.The second kind of scheme,it is the integrated scheme that realizes the radar function based on the communication signal,the typical representative is OFDM signal.This is a new type of radar system.Based on the OFDM structure,this paper researches the architecture of the channelized transmitter and proposes a new type of carrier packet integration structure,which is a more complete integration scheme than the traditional OFDM radar.By comparing the above two schemes' performance and applicable fields,it is concluded that the radar communication function of MSK-LFM is relatively balanced and mature and stable,but there is a considerable defect that it is unsuitable for applications with high Doppler shift and more Path interference airborne environment.This brings great troubles to the future application of flying equipment.Therefore,in order to perfect the integration scheme and expand the application range of the scheme,this paper proposes a combination of frequency estimation compensation and spread spectrum technology for the shortcomings of MSK-LFM Optimization algorithm and scheme.Considering the particularity of the carrier of MSK-LFM scheme,the second-order linear prediction and estimation algorithm is introduced.Finally,the feasibility of the algorithm and optimization scheme is verified through simulation comparison.