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THE EVOLUTION OF SPACE
THE SPACE ENVIRONMENT
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absorption albedo altitude amplifier amplitude angle antenna antenna gain application atmosphere attenuation band bandwidth beam beamwidth carrier channel circuit Communication Satellites communication system components coverage density devices diodes Doppler Doppler shift earth earth's atmosphere effect effective radiated power efficiency electrical electron elements energy equator equipment equivalent noise temperature frequency function gain ground station heat increased input ionosphere klystron limited loss magnetic field maser maximum mechanical modulation noise figure noise temperature operation optical orbit oscillator output parameters particles percent phase plane planetary polarization propagation pulse radiation radio range receiver reduced reflector region reliability signal solar cells space communication space environment space systems spaceborne spacecraft spectrum stability subsystems surface synchronization techniques telemetry thermal tion tracking trans transistors transmission transmitted troposphere vehicle velocity vibration voltage wavelength X band