AUTHOR=Patnala Ankit , Schultz Martin G. , Gall Juergen TITLE=BERT Bi-modal self-supervised learning for crop classification using Sentinel-2 and Planetscope JOURNAL=Frontiers in Remote Sensing VOLUME=Volume 6 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/remote-sensing/articles/10.3389/frsen.2025.1555887 DOI=10.3389/frsen.2025.1555887 ISSN=2673-6187