Extracting useful information from noisy exponentially decaying signal

Details Extracting useful information from noisy exponentially decaying signal Extracting useful information from noisy exponentially decaying signal

2004-08-02

arxiv.org/abs/cond-mat/0408044v1

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

Analysing data that consists of one or more truncated exponential functions is of great interest in a wide range of fields. Data consisting of one or more exponential functions are measured by a wide range of instruments, examples include: nuclear magnetic resonance, (NMR); magnetic resonance imaging (MRI); the analysis of radioactive decay data; chromatography; lifetime fluorescence imaging; spin resonance, (ESR). Many of the algorithms that are currently in used for 'characterising' this data, are difficult to interpret or are they useless and they produce erroneous results. Some of the key technical issues associated with this problem are discussed in this article we also present some results that use some elementary properties of exponential properties of exponential and harmonic functions. These properties allow us to develop relationships between these functions which we exploit to analyse exponentially decaying signals in noisy environments

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