Research On Extraction Method Of Radiation Signal Parameters Of Multi-array Phased Array Radar

According to the research group National Natural Science Foundation of China,"Study on Weak Target Detection Technology Based on XXXX Radar Passive Detection System" and Model Project "XXX Radar Signal Reconnaissance Analysis System",the practical needs of the coherent accumulation of system synchronization and weak target detection algorithms for direct and echo channels are carried out,and the key techniques for parameter extraction of passive multi-array phased array radar radiated signals are deeply developed.The research and application of the research results to the XXX direct wave receiving reconnaissance subsystem successfully carried out multiple field acquisition and storage tests.The paper is divided into five chapters,the main contents of each chapter are summarized as follows:The first chapter mainly summarizes the development process of non-cooperative bistatic radar system and the research status at home and abroad,and clarifies the structure of the article.In the second chapter,the characteristics of the phased array radar are analyzed from the characteristic parameters of the phased array radiation source,the working mode and the task-based time and energy allocation.Then,according to the working mode obtained by the analysis,combined with the long-term measured data of the research group.Speculation statistics,working mode combination and working mode switching mode of XXX non-cooperative phased array radar are put forward,which lays a foundation for the next step of extracting the direct wave parameters of the radiation source.In the third chapter,the principle of FRFT processing chirp signal is studied.The advantages of FRFT are analyzed and the existing problems are analyzed.A FRFT guided by STFT-Hough transform is proposed.The parameter estimation algorithm of multiple-component chirp signal,combined with the filtering theory of fractional Fourier domain,can effectively estimate the strongest signal successively.The fourth chapter introduces the engineering realization and measured data processing of XXX direct wave receiving reconnaissance system.It mainly introduces the key technologies faced in the process of engineering implementation,proposes reasonable solutions and implements them.Finally,the comprehensive analysis tool of ISE is used to evaluate the resource utilization and processing performance of the project,which proves that the real-time storage performance of the project meets the actual needs and is suitable for practical engineering applications.The summary and outlook sections summarize the full text and look forward to future work.