Tropospheric Scintillation at Ka-Band Over a Hilly Tropical Region

Autor:	T. K. Rana, Swastika Chakraborty, Saurabh Das
Rok vydání:	2021
Předmět:	Scintillation Attenuation Butterworth filter Satellite Ka band Atmospheric model Electrical and Electronic Engineering Tropospheric scintillation Cutoff frequency Geology Remote sensing
Zdroj:	IEEE Antennas and Wireless Propagation Letters. 20:1288-1291
ISSN:	1548-5757 1536-1225
DOI:	10.1109/lawp.2021.3078164
Popis:	Satellite signal at the Ka -band is measured at a hilly, high rain fall region, Umiam, Shillong (25.6768° N, 91.9270 °E) for three years using GSAT 14 satellite. Scintillation has been extracted using a Butterworth filter of tenth order and 0.025 Hz cutoff frequency. Experimental results are then compared with the existing ITU-R scintillation model, Karasawa model, Van de Kamp model, and Ortgies-T model. Deviation of the above-mentioned models from measured data is then studied. The ITU-R model is found to be the best while Ortgies-T is found to be the worst performer over this region. New parameterization for the ITU-R scintillation model for the Ka -band is further proposed for this region based on one year of measured data and validated against other two years of data of 20.2 GHz. The results indicate the improved performance of the proposed model with a very high correlation value.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::90b04a62b573dc2b6de4cc3ea4da878a https://doi.org/10.1109/lawp.2021.3078164 Zobrazit plný text záznamu