SN EN 60835-3-7 : 1995

Introduction
1 Scope
2 Normative references
3 Definition and general considerations
4 Indirect method of measurement
5 Direct method of measurement using a radio star
5.1 General considerations
5.2 Method of measurement
5.3 Correction factors
5.3.1 Correction for atmospheric attenuation (C1)
5.3.2 Correction for the angular extension of the
      radio star (C2)
5.3.3 Correction for the change of radio-star flux
      density with time (C3)
5.3.4 Correction for frequency dependence of flux
      density of the radio star (C4)
5.3.5 Correction for the polarization of radio-star flux
5.4 Presentation of results
5.5 Details to be specified
5.6 Error analysis
6 Direct method of measurement using a remote
      source
6.1 General considerations
6.2 Method of measurement
6.2.1 Measurement procedures
6.2.2 Calculation of G/T
6.3 Presentation of results
6.4 Details to be specified
Figures
1 Typical G/T measurement arrangement using i.f.
      precision variable attenuator
2 Typical G/T measurement arrangement usint r.f.
      precision variable attenuator
3 Typical G/T measurement arrangement using a test
      down converter
4 simplified arrangement for direct G/T measurement
5 Linearity and signal ratio
A.1 Correction factor for the angular extension of
      radio stars
Annexes
A (informative) Radio star and atmospheric loss data
B (informative) Bibliography
ZA (normative) References to international
      publications with their corresponding European
      publications

ALSO NUMBERED AS BS 7573:PT3:SEC3.7(1996) Describes several methods of measuring the figure-of-merit (G/T) of the receiving systems of earth stations.