Radio frequency scattering from a heated ionospheric volume, 2, Bistatic measurements

A variety of bistatic experiments which were carried out for the purpose of determining the scattering properties of the heated inospheric volume in the F layer over Platteville, Colorado, are described. Results are presented on the basis of which it was first determined that the center-line scattering takes place from elongated field-aligned scattering structures. Measurements are presented showing that, for the center-line mode, the scattering of the incident signal consists, effectively, of specular reflections off the geomagnetic field lines.