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Improving wave digital simulation by extrapolation techniques
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DOI：10.1078/1434-8411-54100120.png)
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Abstract
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Wave digital simulation principles are known to exhibit excellent numerical stability properties due to their inherent passivity. Yet, the achievable accuracy may not suffice in all applications. In this paper, it will be discussed how extrapolation techniques known from numerical mathematics can be merged with the wave digital concept. The proposed technique can be applied to both ordinary and partial differential equations. As two examples will show, high numerical accuracy can be obtained this way without sacrifycing passivity and the advantageous properties induced by the latter.
Keywords:
wave digital simulation
extrapolation
passive integration methods
linear multistep methods
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