Resolution No.8 (1975): Modernisation of ionosondes

IAGA, recognising the value of high-frequency radio soundings of the ionosphere by ionosondes and other sounding systems (drift, doppler, and angle-of-arrival), and being aware, that the world network of ionosonde stations now consist mainly of limited-purpose and aging instruments that are thus inadequate for IMS and aeronomical needs, encourages national plans toward the modernisation of ionosondes, particularly to introduce digitisation of all relevant echo data and to include new features in the equipment permitting efficient conversion of the data to geophysical parameters.

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