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5.4 Avionics Avionics for aeronautical satellite communications have been developed for many years. The E-systems have been pioneers in the research of airborne commercial satellite communication systems for use on aircraft. Research efforts begun in 1981 resulted in the development of three generations of airborne satellite communications systems using the existing INMARSAT network [49]. In 1986, INMARSAT awarded contracts of about
5.4 The Avionics Avionics for aeronautical satellite communications have been developed for many years. The E-systems have been pioneers in the research of airborne commercial satellite communication systems for use on aircraft. Research efforts begun in 1981 resulted in the development of three generations of airborne satellite communications systems using the existing INMARSAT network [49]. In 1986, INMARSAT awarded contracts of about