Recommendation ITU-R SM.1753-2 (09/2012) Methods for measurements of radio noise
Foreword
Policy on Intellectual Property Right (IPR)
Scope
Keywords
Annex 1 Methods for measuring radio noise
TABLE OF CONTENTS
1 Introduction
2 Sources of radio noise
3 Components of radio noise
4 Key parameters
5 Measurement principles
6 Measurement type
7 Equipment specifications
     7.1 Receiver and preamplifier
     7.2 Antennas
8 Uncertainty analysis
9 Measurement process
     9.1 Selecting measurement locations
     9.2 Frequency selection
     9.3 Analyser/receiver settings
     9.4 Measuring period
     9.5 Separation of man-made and atmospheric noise (measurement Type C only)
     9.6 Data collection and post processing
          9.6.1 WGN measurements with r.m.s. detector (Measurement Type A)
          9.6.2 WGN + IN measurements with raw data sampling (Measurement Types A, B and C)
10 Data processing
     10.1 Overview
     10.2 Correction for equipment noise
     10.3 Determination of the WGN level using the “20% method” (r.m.s.-WGN measurement only)
     10.4 Validation of the 20% cut-off value (r.m.s. WGN measurements only)
     10.5 Separation of man-made noise from wanted emissions (measurement Types B and C)
     10.6 Plotting of the APD (raw data sampling only)
     10.7 Calculation of Fa
     10.8 Separation of IN samples from WGN (measurement Types B and C only)
     10.9 Combining impulse trains to bursts (measurement Types B and C only)
     10.10 Separation of MMN pulses from atmospheric noise (measurement Type C only)
     10.11 Calculation of pulse parameter distribution (measurement Types B and C only)
          10.11.1  Impulse/burst level
          10.11.2  Impulse/burst length and period
          10.11.3  Total impulse/burst time
11 Result presentation
     11.1 WGN measurements
     11.2 IN measurements
12 Limitations
Attachment 1 Verification of WGN frequency selection using SVD
Attachment 2 Verification of the cut-off value when using direct r.m.s. measurements
Attachment 3 Separating man-made noise from wanted emissions
References