CONTENTS

Policy on Intellectual Property Right (IPR)
 1     Sources of radio noise
 2     Terms for the specification of noise intensity and their interrelationship
 3     Noise levels as a function of frequency
 4     Noise from atmospheric gases and the Earth’s surface
        4.1     Radio noise due to the Earth’s atmosphere for earth stations
        4.2     Radio noise due to the Earth’s atmosphere and the Earth’s surface for space stations
 5     Man-made noise
 6     Brightness temperature due to extra-terrestrial sources
 7     Atmospheric noise due to lightning
 8     The combination of noises from several sources