Discussion
What is the Okumura-Hata model used for?
Answer: B
The model gives path loss as a function of frequency, distance and antenna heights, with correction terms for urban, suburban and open environments, fitted to extensive measurements in Tokyo. It became the standard first estimate for cellular planning. Rain, diffraction and ducting are handled by quite different models. An empirical model named after the measurements behind it carries their conditions with it, which is why its stated range of validity matters as much as its formula.
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