Assessment of the State of Plant Biomass Based on the Integration of Multispectral Sensors of Optical and Radio RangesGennady Linets, Anatoliy Bazhenov, Sergey Melnikov, Sergey Malygin and Natalia GrivennayaE3S Web of Conf., 539 (2024) 02035DOI: https://doi.org/10.1051/e3sconf/202453902035