Radiophotonic path of intermediate frequency signals of multi-frequency microwave radiometric system for remote sensing of the atmosphere

The paper presents the results of experimental studies of variants of construction of intermediate frequency paths of microwave radiometric systems based on the traditional scheme of construction using copper coaxial transmission lines of intermediate frequency signals of microwave radiometric receivers and promising radiophotonic fiber-optic transmission line of microwave signals with internal modulation. The aim of the work is to evaluate the possibility of realization of the radiophotonic path for transmission of intermediate frequency signals as a part of perspective microwave radiometric systems for remote sensing of the atmosphere. The objectives of the work are to analyze the characteristics of radiophotonic transmitting and receiving modules as part of the intermediate frequency path of a multi-frequency microwave radiometric system for remote sensing of the atmosphere in comparison with a coaxial radio-frequency transmission line.