Effect of horizontal gradients on ionospherically reflected or transionospheric paths using a precise homing-in method

A Simplex Method for Function Minimization

J. A. Nelder, R. Mead · The Computer Journal · 1965 · 28.5K citations

Numerical Analysis, Mathematical Programming, Large-scale Global Optimization +16

A model of the vertical distribution of the electron concentration in the ionosphere and its application to oblique propagation studies

P. L. Dyson, J. A. Bennett · Journal of Atmospheric and Terrestrial Physics · 1988 · 138 citations

Geophysics, Upper Atmosphere, Engineering +7

Upgrades for efficient three‐dimensional ionospheric ray tracing: Investigation of HF near vertical incidence sky wave effects

Michael H. Reilly · Radio Science · 1991 · 30 citations

Geophysics, Upper Atmosphere, Engineering +12

High‐frequency ray paths in ionospheric layers with horizontal gradients

K. T. R. Davies, C. M. Rush · Radio Science · 1985 · 27 citations

Geophysics, Horizontal Gradients, Region Electron Density +8

High‐resolution probing of the HF ionospheric skywave channel: <i>F</i>₂ layer results

L. S. Wagner, J. A. Goldstein · Radio Science · 1985 · 26 citations