Ionospheric Research Contract No Af19 122 44

This bibliography comprises a non-exhaustive compilation of over 1400 references to the world's literature in the ionosphere with special emphasis on its effect on reflection, refraction or propagation of electromagnetic waves. The frequencies involved are usually in the low frequency or long wave bands in contrast to those (UHF, VHF and SHF) involved in tropospheric propagation investigations although the pulsed technique at vertical or slant incidence makes use of a wide range of frequencies.

The investigation of the structure and variations of the lower ionosphere by extending the normal ionosonde sweep frequency technique into the low frequency range and investigation of ionospheric parameters by means of a conductivity rocket probe is reported. The problems outlined fit under the broad categories of recording programs, electromagnetic theory studies, ionospheric phenomena, ground based and rocket equipment development and the physics of ionospheric formation. A listing of the reports issued and in preparation, paper publication and presentation and similar matters are also presented. (Author).