BS EN 60835-3-7:1996
Current
The latest, up-to-date edition.
Methods of measurement for equipment used in digital microwave radio transmission systems. Measurements on satellite earth stations Figure-of-merit of receiving system
Hardcopy , PDF
English
15-02-1996
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
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