Podcast
Questions and Answers
What is the formula to calculate total attenuation from rain?
What is the formula to calculate total attenuation from rain?
- $A = \alpha + L$
- $A = \alpha L$ (correct)
- $A = \alpha / L$
- $A = L - \alpha$
What parameters are needed to predict link performance in rain?
What parameters are needed to predict link performance in rain?
- Rain rate, specific attenuation, polarization
- Rain rate, path length in rain, statistics of heavy rain at site location (correct)
- Path length in rain, frequency, drop-size distribution
- Rain rate, temperature, humidity
How is attenuation due to rain modeled?
How is attenuation due to rain modeled?
- $\alpha = aR^b$ dB/km (correct)
- $\alpha = a - bR$ dB/km
- $\alpha = a + bR$ dB/km
- $\alpha = a / bR$ dB/km
For an effective slant path length of 5 km, what is the attenuation if rain rate, $R$, is 50 mm/hr, frequency, $f$, is 2.5 GHz, $a = 3.87 \times 10^{-4}$, and $b = 1.31$?
For an effective slant path length of 5 km, what is the attenuation if rain rate, $R$, is 50 mm/hr, frequency, $f$, is 2.5 GHz, $a = 3.87 \times 10^{-4}$, and $b = 1.31$?
What has little effect on attenuation due to their low water content?
What has little effect on attenuation due to their low water content?
Flashcards are hidden until you start studying