Iterative focusing algorithm to estimate moving target

In this paper, the authors have presented iterative focusing algorithm (IFA). Under the condition of the same number of bins, IFA demonstrates imaging performance superior to that obtained using DAS because of the area focusing. IFA with DAS algorithm significantly improves the amount of computation than the conventional IAA algorithm. Furthermore, by focusing the scanning area, bin size is reduced, and the estimation accuracy is improved significantly. IAF with IAA algorithm performs better than IAF with DAS algorithm. Note that IAF with IAA algorithm takes huge amount of computation. If the authors allow little ambiguity, the IFA with DAS algorithm is effective for both target imaging and computation.