Radio-reflectivity detection of artificial modification of the ionosphericFlayer

Several radio techniques are being employed to study the F-region ionospheric modifications produced by the installation described by Utlaut [1970] in a companion paper. One such technique, discussed here, is the measurement of ‘radio reflectivity,’ the relative power of radio echoes obtained from the perturbed ionosphere. Some theoretical aspects of this technique and its potential for measuring ionospheric parameters are treated in a companion paper by Whitehead [1970]. Preliminary measurements using the technique are reported here. These measurements yielded unexpected results whose possible interpretation is tentatively presented.