phically-oriented mitigating strategies. A follow-on program should be designed to develop mitigating strategies and techniques for electronic equipment and systems operating in an SPS environment. 4.2 IONOSPHERIC HEATING AND VEHICLE EFFLUENT EFFECTS The amount of power to be transmitted from the geostationary orbit of the satellite power system to the earth's surface may be large enough to substantially heat the earth's ionosphere. This heating could modify the natural ionospheric structure, which could lead in turn to significant changes in the performance of telecommunications systems that rely upon the propagation of electromagnetic energy within and through the ionosphere. Figure 4.4 illustrates potential SPS impacts on the ionosphere and telecommunication systems. The SPS power beam could generate electron density Fig. 4.4. Effect of SPS Microwave Transmission on the Ionosphere and Telecommunication Systems
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