Comparaison des Resultats de la Mesure du Contenu Total d'Electrons Obtenus Par la Methode du Faraday Differentiel et Par la Methode des Coincidences (Comparison of Results of Measurement of Total Electron Content Obtained by Using the Faraday Differential Method and the Coincidence Method)

摘要

The calculation of total electron content by measurement of the Faraday differential effect requires the use of fairly small equipment for the recording of signals which are transmitted on two adjacent frequencies. Starting from the fundamental equation, it is easy to derive two methods of calculation, one using the coincidence between two Faraday zeroes produced on each frequency transmitted, the other based upon the angular deviation between the Faraday effect on these two frequencies. The programming of all the digital calculations is described, and some results obtained by these two methods of calculations are compared. The mean difference does not exceed 5%. (Author)