Parallelization of NCS Algorithm Based on Heterogeneous Multi-core Prototype Chip

NCS algorithm (nonlinear chirp scaling) can deal with the large coupling SAR echo,achieve precise focus.However,the imaging time of the serial NCS algorithm could hardly achieve the requirements of real-time imaging.To improve efficiency of the algorithm,we use the improving algorithm with the sub-aperture in this paper.Based on the NoC heterogeneous multi-core prototype chip,we achieve the parallelization of the NCS real-time imaging algorithm.Compared with the serial algorithm,parallel algorithm can greatly shorten the imaging time.And compared with the theoretical calculation value of a single sub-aperture operation,the actual parallel efficiency can reach 90.06%.