Simulation And Implementation Of Target Detection And Plot Processing Technology

Radar has a wide range of applications in civilian,aerospace,defense and other fields.With the increasing complexity of the radar electromagnetic environment,the continuous development of signal processing theory and the continuous improvement of user needs,radar signal processing and data processing technology maintain a rapid development.In this dissertation,the requirements of real-time signal processing of a certain type of radar in complex clutter environment are combined with engineering practice to explore the design and realization of radar precision signal processing and radar anti-jamming technology.Firstly,the dissertation shows the overall design of the three-channel AMTI,throughly researching on the design of key algorithms such as clutter map estimation,constant false alarm processing,non-coherent accumulation and so on.A clutter suppression method based on trace information is used on the basis of the dot aggregation algorithm to deal with the detection remains in the signal processing result,which can effectively eliminate residual clutter and improve trace quality.Secondly,the dissertation introduces the design of radar anti-jamming algorithm.This paper introduces the adaptive sidelobe cancellation algorithm based on the delay section and combines the radar measured data to carry out the performance verification.Then a radar suppression interference detection algorithm based on full spectrum analysis is proposed to achieve real-time reconnaissance of active interference,which can effectively distinguish the location of the interference,frequency and intensity and other information.This algorithm improves the anti-jamming capability of the radar is of great significance.Finally,a radar signal processing hardware platform based on a common high-performance server is designed.The design of radar real-time signal processing based on multi-core CPU is described.This dissertation gives a detailed implementation of the three-channel MTI system based on the radar signal processing platform.The algorithm of pulse pressure,constant false alarm,non-coherent accumulation and adaptive sidelobe cancellation are introduced in detail.High-performance FFT functions and matrix operations functions provided by MKL developed by Intel are used for algorithm development.Based on the implementation and optimization of multi-core CPU,the execution time of each algorithm module is measured in detail.The test results show that the system can meet the real-time processing requirements.