Cox, M G; Esward, T J; Harris, P M; McCormick, N J; Ridler, N M; Salter, M J; Walton, J P R B* (2004) Visualization of uncertainty associated with classes of electrical measurements. NPL Report. CMSC 44/04

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Abstract

The interpretation of statements of measurement uncertainty can be difficult when there are several input quantities and several output quantities involved in the model of measurement. Appropriate ways of visualizing the uncertainty information can be helpful in this regard. The use of visualization tools is investigated for two prob-lems that occur in electrical metrology and electrical engineering. One problem concerns co-ordinate system transformations, as arise in converting measurements from Cartesian (real and imaginary) co-ordinates to polar (magnitude and phase) co-ordinates. The other concerns microwave power meter calibration, specifically the determination of ‘comparison loss’. The underpinning measurement models also arise in other disciplines. Moreover, the visualization tools considered have aspects that are generically applicable.

Item Type:	Report/Guide (NPL Report)
NPL Report No.:	CMSC 44/04
Subjects:	Electromagnetics Electromagnetics > Electrical Measurement
Last Modified:	02 Feb 2018 13:16
URI:	http://eprintspublications.npl.co.uk/id/eprint/2902

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