RECOMMENDATION ITU-R P.372-15 – Radio noise
Foreword
Policy on Intellectual Property Right (IPR)
Scope
PART 1
     1.1 Sources of radio noise
     1.2 Terms for the specification of noise intensity and their interrelationship
          1.2.2 Noise factor
          1.2.3 r.m.s noise field strength
          1.2.4 Noise temperature
          1.2.5 Noise variability
PART 2
PART 3
     3.2 Radio noise due to the Earth’s atmosphere for earth stations
     3.3 Radio noise due to the Earth’s atmosphere and the Earth’s surface for space stations
PART 4
     4.1 Brightness temperature due to extra-terrestrial sources
PART 5
     5.1 Atmospheric noise due to lightning
PART 6
     6.1 Outdoor man-made noise
          6.1.1 Additive white Gaussian noise
     6.2 Indoor man-made noise
          6.2.1 Additive white Gaussian noise
PART 7
     7.1 The combination of noises from several sources