AUTHOR=Wang Zhen , Wang Maofa , Wang Yangzhen , Zhu Zhenjing , Shang Guangtao , Zhao Jiabao , Hu Ning TITLE=Based on the N2N-SAMP for sparse underwater acoustic channel estimation JOURNAL=Frontiers in Physics VOLUME=12 YEAR=2024 URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2024.1460388 DOI=10.3389/fphy.2024.1460388 ISSN=2296-424X