A Ship Imaging Algorithm Based on Modified NCS

The echo characteristics of moving ship targets are complex and difficult to focus using traditional imaging algorithms. This article proposes an modified nonlinear chirp scaling algorithm (NCSA) algorithm, which first analyzes the echo model of a moving ship, then uses the RMA algorithm to implement Range Cell Migration Correction ( RCMC) , and finally uses the improved NCS algorithm to correct the azimuth space-variance. The simulation results show that the proposed algorithm has good focusing effect.