Research On Radar Target Scattering Center Imaging And Its Application

The work in this paper mainly focuses on the actual engineering requirements of radar target scattering characteristics analysis,and studies the core issues such as radar target ISAR imaging algorithm,radar target scattering center modeling theory,and radar target scattering characteristics analysis theory and application.In the research of radar target far-field ISAR imaging algorithms,for a long time,the focus is how to improve the ISAR image resolution.In this paper,radar target is modeled and simulated to obtain target echo data,and synthetic aperture technology is used to process and image based on the range-doppler(FFT)algorithm,convolution back-projection(CBP)algorithm and double integral algorithm.From the algorithm efficiency,radar ISAR image resolution,large Angle model applicability,etc,to analyze and compare the advantages and disadvantages of the three algorithms.In terms of theoretical analysis and research of radar target scattering center model,the CLEAN algorithm used to eliminate side lobe effect was introduced.Based on multi-radar targets ISAR image and CLEAN algorithm,the construction scheme of target scattering center model was realized.In the applications of radar target scattering center,due to UDE scattering center model,analysis of electromagnetic scattering characteristics of target is relatively simple,Based on this advantage,in view of the effective space limitation problems in practical field test of radar target electromagnetic scattering characteristics,combining components decomposition method by simulation examples of actual target characteristics analysis of scattering characteristics of target overall-parts transfer problems are analyzed in theory,respectively,based on the target scattering center model and components decomposition method for multiple radar combination schemes are simulated and experimental verification,the results showed that the combination of components decomposition thought radar target overall-parts scattering transfer characteristics analysis scheme is feasible.