F. T. Djuth

TL;DR: In this paper, the authors compare the performance of MF/HF partial-reflecton radar systems with those of a meteor-wind radar at heights of 80-100 km and a Fabry-Perot interferometer measuring 0(1S) emissions near a height of 97 km.

TL;DR: In this paper, the temporal development of the so-called HF-enhanced plasma line (HFPL) has been studied in detail using the high-power high-frequency (HF) facility located near Arecibo, Puerto Rico.

TL;DR: In this article, the spectrum of the 430 MHz radar backscatter from HF-induced Langmuir turbulence with height discrimination was observed for very stable ionospheric conditions under which the height of the below-threshold spectrum had changed by less than 300 m during a 7-min period.

TL;DR: In this paper, large (1000-2000 K) enhancements in electron temperature have been observed when high-power radio waves reflect near the nighttime F region peak, accompanied by significant (50-300 K) increases in ion temperature, large reduction in electron density, and strong HF-induced spread F.

TL;DR: The results obtained with ionospheric modification experiments over the three years preceding the XXI General Assembly of URSI in 1984 at Florence are reviewed in this article, where weak electromagnetic sidebands observed using a single pump frequency and its similarity to the plasma lines observed using higher HF frequencies near Tromso, the HF-enhanced plasma line observed with the 50 MHz radar, and a double-humped spectrum below threshold.