Why can we not use sky waves for navigation?(a) Low power(b) More noise(c) Unpredictable path(d) Not economicalI had been asked this question during an internship interview.This key question is from Radio Propagation and Noise Characteristics topic in section Terrestrial Radio Navigation System of Avionics

Why can we not use sky waves for navigation?(a) Low power(b) More nois

1.	Why can we not use sky waves for navigation?(a) Low power(b) More noise(c) Unpredictable path(d) Not economicalI had been asked this question during an internship interview.This key question is from Radio Propagation and Noise Characteristics topic in section Terrestrial Radio Navigation System of Avionics
Answer» Right answer is (C) UNPREDICTABLE path The best I can explain: The sky waves makes some types of long range communication possible, but is of less value to navigation system because it’s transmission path is unpredictable. A rough location where the sky waves might GET reflected can be determined by SNELL’s law.

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