Signal Processing Case Studies
Examples of recent work carried out at NPL:
Case study: the application of signal processing techniques to environmental vibration data
This case study, a collaboration between NPL and the University of Huddersfield, describes the application of a number of signal processing techniques to environmental vibration measurements recorded by the Watt balance team at NPL. It describes the use of time domain analysis, frequency domain analysis and wavelet analysis to help understand the nature of the recorded signals and identify and remove transient events within those signals that are determined to be non-stationary.
Case study: sampling and digitisation
This case study summarises the results of work on sampling and digitisation that was carried out by SSfM staff together with colleagues from NPL's Electrical and Software team. It describes work carried out for NPL's Engineering Measurements team to help them develop a calibration standard for dynamic fatigue testing machines. A brief description of the work can be found in the following short conference presentation from the British Electromagnetic Measurements Conference, NPL, UK, 14-17 November 2005. The case study also provides an opportunity to set out a short introduction to filter design and analysis.