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Continuing with the previous question.. (True or False) Considering the range of frequencies reflected back to the instrument, the highest frequency will have the longest travel time and can be used to estimate the height of the F2 peak. O True O False

Continuing with the previous question.. (True or False) Considering the range of frequencies reflected back to the instrument, the highest frequency will have the longest travel time and can be used to estimate the height of the F2 peak. O True O False

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Consider an instrument that transmits radio waves at different frequencies vertically into the ionosphere and measures the time it takes them to return. Using this technique, one can indirectly measure the electron density as a function of height. Assume a ground-based transmitter emits a vertical signal over a range of 1 to 15 MHz. If the peak electron density is 2x10° electrons/cm³, what range of frequencies will be reflected back to the instrument on the ground? Neglect any absorption effects. Frequencies from MHz to MHz will be reflected back.
Transcribed Image Text:Consider an instrument that transmits radio waves at different frequencies vertically into the ionosphere and measures the time it takes them to return. Using this technique, one can indirectly measure the electron density as a function of height. Assume a ground-based transmitter emits a vertical signal over a range of 1 to 15 MHz. If the peak electron density is 2x10° electrons/cm³, what range of frequencies will be reflected back to the instrument on the ground? Neglect any absorption effects. Frequencies from MHz to MHz will be reflected back.
Continuing with the previous question. (True or False) Considering the range of frequencies reflected back to the instrument, the highest frequency will have the longest travel time and can be used to estimate the height of the F, peak. True False
Transcribed Image Text:Continuing with the previous question. (True or False) Considering the range of frequencies reflected back to the instrument, the highest frequency will have the longest travel time and can be used to estimate the height of the F, peak. True False
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