High-resolution mapping of ocean floor based on synthetic aperture technique

To improve the imaging performance of multireceiver synthetic aperture sonar system, this paper proposes a new imaging methodology. The presented approach exploits the idea of Loffeld’s bistatic formula (LBF) that is an accurate spectrum. Using the presented method, the bistatic phase of all receiver dataset is compensated, and the interleaving arrangement related to the compensated datasets is carried out. After the interleaving arrangement, the SAS datasets are imaged based upon chirp scaling. The outcomes of our method are presented, and performance comparisons between our method and back projection algorithm are further carried out. The comparisons show that the recommended approach can gain good results. Besides that, the recommended approach is much more time-saving than traditional approaches.