caa a22 4500 477124712 CHVBK 20180405111646.0 cr unu---uuuuu 170330e19971101xx s 000 0 eng 10.1007/BF02678264 doi (NATIONALLICENCE)springer-10.1007/BF02678264 An estimation of S/N degradation at millimeter waves during rain events [Elektronische Daten] [A. Sen, R. Bera, P. Karmakar] The use of Ka Band (20/30 GHz) for future satellite communications has been addressed. The exploitation of Ka band with a bandwidth of 2500 MHz seems to represent the largest significant achievement in satellite communications potential, so far. The problems associated with the use of this frequency band such as attenuation and receiver noise temperature (floor) variation with rain has been addressed. The receiver noise floor variation with rain has so far been ignored. Therefore, in view of propagation and noise study over this Ka Band, both signal attenuation and receiver noise floor variations with rain rate are estimated using dual frequency radiometers operating at 22.235 and 31.4 GHz over a tropical station, Calcutta, India. Plenum Publishing Corporation, 1997 Sen A. Institute of Radiophysics and Electronics, University of Calcutta, 92, A. P. C. Road, 700 009, Calcutta, India aut Bera R. Institute of Radiophysics and Electronics, University of Calcutta, 92, A. P. C. Road, 700 009, Calcutta, India aut Karmakar P. Institute of Radiophysics and Electronics, University of Calcutta, 92, A. P. C. Road, 700 009, Calcutta, India aut International Journal of Infrared and Millimeter Waves Springer US 18/11(1997-11-01), 2233-2257 0195-9271 18:11<2233 1997 18 10762 https://doi.org/10.1007/BF02678264 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02678264 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sen A. Institute of Radiophysics and Electronics, University of Calcutta, 92, A. P. C. Road, 700 009, Calcutta, India aut NATIONALLICENCE 700 1- Bera R. Institute of Radiophysics and Electronics, University of Calcutta, 92, A. P. C. Road, 700 009, Calcutta, India aut NATIONALLICENCE 700 1- Karmakar P. Institute of Radiophysics and Electronics, University of Calcutta, 92, A. P. C. Road, 700 009, Calcutta, India aut NATIONALLICENCE 773 0- International Journal of Infrared and Millimeter Waves Springer US 18/11(1997-11-01), 2233-2257 0195-9271 18:11<2233 1997 18 10762 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer