Developing Good Practice in Metrology Applications

23rd June 2006 - NPL

The second seminar in the series was held at NPL on the 23rd June 2006. Again the purpose of the seminar was to gain feedback from those attending on their concerns about the use of Digital Signal Processing in metrology. This information will be used to determine the contents of our forthcoming Good Practice Guide.

The format of the day was similar to the first Signal Processing Seminar and included technical presentations and software demonstrations. We also aimed to offer workshops and one-to-one surgeries depending on demand.

Details of the first seminar are also available.

Scope

Signal conditioning and processing, both analogue and digital, are ubiquitous in modern metrology. However, it is not always clear what contribution to measurement uncertainty arises from the signal processing methods and algorithms that we employ. The current Software Support for Metrology programme is producing a Good Practice Guide on signal processing for metrologists. As part of this process, individuals had already attended a one-day seminar and were invited to a second seminar to hear how NPL and industry tackle a range of important measurement problems that incorporate signal processing challenges, and contribute their own experiences.

Proceedings

Chair: Paul Wright, NPL

09:30		Registration and Coffee
10:00		Introduction		Jonathan Williams, NPL
10:05		Keynote address: Modelling signal processing components for uncertainty analysis ( PDF, 1.94 MB)		Klaus-Dieter Sommer, Thuringian State Authority of Metrology and Verification, Germany
Filtering and signal estimation/recovery
10:50		A beginner's guide to convolution and deconvolution ( PDF, 381 kB)		David Humphreys , NPL
11:15		Tea and Coffee
11:30		Adaptive Filters and SIMO System Identification ( PDF, 746 kB)		Patrick Naylor, Imperial College London
12:00		Phase behaviour of filters ( PDF, 888 kB)		John Blakey, Consultant
Software demonstrations, workshops and surgery session
12:30		The importance and significance of phase ( PDF, 277 kB)		Pierre Gélat & David Humphreys, NPL
Filtering and signal estimation/recovery (continued)
13:30		Hardware limitations of sampling, digitisation and filtering in data acquisition systems ( PDF, 643 kB)		Dimitrios Georgakopoulos, NPL
14:00		Synthesis of Digital Correction Filters ( PDF, 686 kB)		Peter Hessling, National Testing and Research Institute, Sweden
Applications
14:25		Digital Signal Processing and its application to Low Level Signal Recovery		Patrick Gaydecki, Manchester University
14:55		Non-stationary signals: environmental disturbance and the NPL Watt Balance (1) Ian Smith ( PDF, 782 kB) (2) Xiang Jiang ( PDF, 881 kB)		Ian Smith, NPL, and Xiang Jiang, Huddersfield University
15:25		Tea and Coffee
15:40		Robust signal processing in high stress and adverse conditions ( PDF, 1.25 MB)		Dave Rhodes, ISVR, Southampton University
16:10		Signal processing for gamma-ray spectroscopy applications ( PDF, 3.23 MB)		Andrew Boston, Liverpool University