研究目的
To estimate cloud attenuation for GEO and NGSO satellite communication systems operating at Q/V and W bands, considering single and multiple slant paths.
研究成果
The paper presents a methodology for estimating cloud attenuation at Q/V and W bands for GEO and NGSO satellite systems, highlighting the significant impact of cloud attenuation at higher frequencies and lower elevation angles. Site diversity is suggested as an effective mitigation technique. Experimental validation is needed to confirm the findings.
研究不足
The methodology requires validation through experimental campaigns to verify predicted results, especially for NGSO systems with time-dependent elevation angles.
1：Experimental Design and Method Selection:
The methodology involves the synthesis of Integrated Liquid Water Content (ILWC) time series using stochastic differential equations (SDEs) to model the spatial and temporal behavior of ILWC.
2：Sample Selection and Data Sources:
ILWC statistical parameters are derived from databases like ERA40, ERA INTERIM, ECMWF, MODIS, etc.
3：List of Experimental Equipment and Materials:
Not explicitly mentioned.
4：Experimental Procedures and Operational Workflow:
Generation of ILWC time series, conversion into vertical extent time series, categorization of clouds, and computation of cloud attenuation time series considering elevation angle and altitude.
5：Data Analysis Methods:
Use of Mie scattering theory for computation of extinction cross coefficient and analysis of cloud attenuation statistics.
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