Ionospheric scale height from the refraction of satellite signals

Heron, M.L.; Titheridge, J. E.

doi:10.1016/0032-0633(72)90057-8

Cited by 3 publications

(1 citation statement)

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“…Titheridge [ 1964b] derived values of scale height at the peak for a fitted Chapman layer for 16 months of data using the 20-MHz channel on Beacon B (S-66). The experiment was extended to higher resolution of elevation angle measurement by Heron and Titheridge [1972]. These analyses suffered the interference of horizontal gradients and plasma density irregularities, and a large error in scale height meant that only average values were useful.…”

Section: Of the O + / H + Transition Heightmentioning

confidence: 99%

Ionosphere layer shape from second‐order ATS 6 measurements

Heron¹

1981

Radio Science

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The carrier phase at 40 MHz on the ATS 6 to Boulder beacon experiment is found to be sufficiently well resolved to allow the measurement of the second‐order term as well as the first‐order total electron content value. The second‐order component of phase path is primarily due to a truncation of the expansion for refractive index when the satellite is within about 45° of zenith, but it is dominated by ray path bending when the satellite is outside that zone. The second‐order value is used to derive scale height at the peak of the F layer for one day of data with absolute accuracy of about ±10% during the daytime, when the plasma densities are generally high. The scale height determined at the peak differs from that derived from ionograms for the underside of the peak and also differs from that of the α‐Chapman layer fitted to total content and peak density. The main advantage of the second‐order evaluation of scale height is its spatial coincidence with total content and F factor observations.

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Section: Of the O + / H + Transition Heightmentioning

confidence: 99%