Tender issueObjective: Perform channel measurements at Wbands by means of a beacon designed developed and launched on a Cubesat platform.Targeted Improvements: Augment ITU-R models for W-band with specific measurements such as i) Tropospheric scintillation at W-band including spectral properties dependence on elevation angles ii)combination of cloud and attenuation effects iii) frequency scalingof rain attenuation
iv) depolarization due to ice (fast XPD without concurrent attenuation).Description: For large broadband satellite networks the number of gateways may be such that the cost of the ground segment exceeds the cost of the satellite even whenusing Q/V band in the gateway feeder link.
in satellite communication systems operating at Ka band frequencies is more severe than usually experienced at lower frequency bands .
Due to its rain attenuation
proportionality properties to range, our short range simulation and measurement results will lead us to estimate the rain effects for longer range as 5G realistic applications.
Impact Of Elevation Angle on Rain Attenuation
In Satellite Communications by Syed Nauman Ahmed and Dr.
becomes the more dominant factor as the higher frequency and should be considered.
Chandrasekar, 2005: Correction of radar reflectivity and differential reflectivity for rain attenuation
at X band.
In the recent times, due to lack of experimental data for rain attenuation
for most locations in the tropical and subtropical region, the SST has been identified to be a powerful and accurate tool that can produce the necessary statistics of rain attenuation
based on the time series of rain rate R (mm/h) at the site, at any frequency and polarization, and for any slant path above about 10[degrees] whenever a real radio link is not available  .
Research of seasonal rain attenuation
and radio waves fading in LOS links at 19.5 GHz on South Africa terrain are presented in .
The previous research of DSD using data obtained from Kuala Lumpur by Lam  focused on investigating the dependence of the rain attenuation
on the DSD and finding the key raindrop diameter for computing specific rain attenuation
, rather than establishing the relationships of DSD in the region with defined equation's fittings and coefficients.
Combining Equations (6) and (7) yields a new equation that obtains the PER according to the rain attenuation
values, as expressed in Equation (8).
It should be noted that the most common reference available in calculating rain attenuation
often uses rain intensity R, probably because of a scarcity of rain drop size data.
Shukla, "Rain attenuation
modeling in the 10-100 GHz frequency using drop size distributions for different climatic zones in tropical India," Progress In Electromagnetics Research B, Vol.