Abstract

Reliable modeling of atmospheric attenuation is needed for optimum design of satellite communication links. In the view of upcoming satellite communications in this region, it is necessary to study the atmospheric attenuation at Ka-band during rain events. In this paper, attenuation estimation at Ka-band obtained from radiometric brightness temperatures $( T_{b})_{}$ at Kolkata, India $( 22 ^{0} 34 ^{'}\mathrm {E} , 88 ^{0}22$'N) have been presented. The contribution of water vapor is examined in determining the behavior of attenuation during rain at frequencies 22.24 GHz, 26.24 GHz and 31.4 GHz. It is observed that though the attenuation at 31.4 GHz is the highest, the attenuation at 22.24 GHz is higher than that at 26.24 GHz due to water vapor absorption under low to moderate raining conditions. The attenuation data obtained from ITU-R and Millimeter Wave Propagation (MPM) model are compared with the radiometric data to understand the limitation of radiometric measurements.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.