The performance of earth-to-satellite link largely depends on various
environmental factors like rain, fog, cloud, and atmospheric effects like
ionospheric and tropospheric scintillation. In this paper, the tropospheric
scintillation of Bangladesh, a subtropical country, is predicted based on
measured climatic parameters, like relative humidity, temperature. In this
prediction, ITU scintillation model are used. Four major cities, named
Dhaka, Chittagong, Rajshahi and Sylhet, of Bangladesh are selected for
prediction of scintillation. From the simulation result, Rajshahi is found
to be the most badly affected region by the scintillation fade depth (SFD),
which is followed by Chittagong and the SFD is minimum in Dhaka and Sylhet.
The difference in SFDs among the considered cities does not vary heavily. It
is also found that the SFD varies from 3 dB to 13 dB depending on the
frequency in used. Moreover, higher scintillation is found in rainy season
of Bangladesh. During this period, the scintillation becomes double of the
average figure.
Evaluation of occupation hot exposure in industrial workplaces
in a subtropical country