The Design And Implementation Of A Radar Real-time Two-dimensional Imaging System

In this project,a real-time imaging method for wide-band radar two-dimensional images was studied,and a multi-channel real-time ISAR imaging system was developed.The system was installed on a large-scale broadband radar and have achieved good real-time imaging results.The system is mainly composed of radar interface,signal acquisition subsystem,ISAR real-time imaging and processing subsystem,data processing subsystem,data collecting storing and distributing subsystem,network switch,and display processing terminal.After many aircraft flight tests,satellite tracking experiments and project tests,the "real-time two-dimensional imaging software design and implementation" achieved real-time one-dimensional imaging and two-dimensional imaging of the target;experimental data(including the target's broadband echo,one-dimensional images and two-dimensional images and the target measurement track)were correct;the data of the target echo,one-dimensional images,two-dimensional images,and other information of the target,were reproduced normally.The successful development of experimental prototypes provided hardware platform support for the verification of key technologies for ISAR,and played a catalytic role in the successful implementation of a major information project.Thesis writing is mainly based on the skeleton of software development papers.The first chapter mainly introduces the research significance and background of the project,and summarizes the research status at home and abroad.The second chapter introduces many key technologies in the implementation of the project,including the principles of real-time two-dimensional imaging,translational motion compensation,distance alignment,phase compensation and other related technologies.The imaging algorithms were studied and a new one was proposed.And the DSP language in the process of software development was expounded.The third chapter analyzes the functional requirements of real-time 2D imaging software and gives a general description of the software's performance and indicators and introduces the overall design of the software system,the composition of the software system and the signal flow.The fourth chapter introduces the operating platform and implementation foundation of the software system,the realization process of the main module and the key algorithms.The fifth chapter mainly introduces the system and the tests.The sixth chapter is the summary and prospect of this research.