Model estimates of the full wave scatter reflection coefficients for an electron line density q = 3 × 10¹²e⁻∕m, using a radial Gaussian plasma distribution at all three CMOR radar frequencies as a function of the trail radius. The upper panel shows the reflection coefficients for the transverse and parallel cases color coded by frequency. The four panels below show the change in total reflection coefficient with initial trail radius (which can be translated into time using a diffusion coefficient) for increasing scattering angles δ = 0°, 30°, 60°, 90°.