National Physical Laboratory

Software Downloads

This software has been validated under Microsoft Windows XP Professional.

Data Fusion and Network Design Simulation Software: Release 1

This software can be used to simulate distributed measuring systems and networks in which sensors may be faulty, noisy or interdependent. The software can be used to study network design, to compare data fusion algorithms and to evaluate measurement uncertainties associated with aggregated data in networks.

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Lock-In Amplifier Simulation Software: Release 1

The software allows users to investigate the performance and limitations of ideal and imperfect instruments applied to simulated and real test signals.

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Lock-In Amplifier Simulation Software: Release 2

A new version of the software for users who require additional functionality.

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XLGENLINE (v1.1)

This software allows the user to calculate the best-fit low degree polynomial calibration function to a set of measurement data, taking uncertainties associated with the data into account.

The software was developed in Microsoft Excel 2000.

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XGENLINE (8.1)

This software allows the user to calculate the best-fit low degree polynomial calibration function to a set of measurement data, taking uncertainties associated with the data into account.

The software was developed in MATLAB and compiled into a standalone Windows executable.

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Software to Support ISO/TS 28037:2010(E)

This software supports the ISO Technical Specification (TS) Determination and use of straight-line calibration functions.

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Wichmann-Hill Random Number Generator

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EUnit

A test harness to implement unit testing for Excel.

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Software for Measurement Uncertainty Evaluation

NPLUnc_101 - software developed at NPL to promote and support the use of the Guide to the expression of uncertainty in measurement (GUM) and the first supporting document to the GUM, GUM Supplement 1, concerned with the use of a Monte Carlo method for uncertainty evaluation.

NPLUnc_102 - software developed at NPL to promote and support the use of the second supporting document to the GUM, GUM Supplement 2, concerned with extending the GUM and GUM Supplement 1 to measurement models with any number of output quantities.

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Compact covariance matrix uncertainty software

This software can be used to provide a compact representation of the large covariance matrices associated with waveform measurements. Furthermore, the software supports the propagation of the covariance matrix through the measurement functions defined by various algebraic manipulations of those waveform measurements.

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Last Updated: 17 Sep 2014
Created: 9 Dec 2010