Research of High Resolution ISAR Algorithm Based on Coherent Registration and Fusion for Distributed Radar

摘要

According to the Inverse Synthetic Aperture Radar(ISAR),this thesis analyses the attributed to the physical restriction that the ISAR image resolution cannot be improved,therefore,a high resolution ISAR algorithm for distributed radar system is proposed.Depended on existing hardware development level,it combines multi-radar echo signals for one target and then utilize data fusion theory for multi-visual angle and multi-frequency band to obtain ultra-wide band and larger coherent accumulation angle,on this account,the much higher resolution 2D-image than the single radar is able to acquired.The main content illustrates the method for high resolution ISAR on target electromagnetic scattering two-exponential sum model,and the simulation is made to demonstrate the analysis is effective and validity.