A smoothly differentiable cosine-sum interpolation kernel with 22 coefficients meets LISA's picometre precision requirement in time-delay interferometry and halves the coefficients needed by Lagrange interpolation.
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Optimal design of interpolation methods for time-delay interferometry
A smoothly differentiable cosine-sum interpolation kernel with 22 coefficients meets LISA's picometre precision requirement in time-delay interferometry and halves the coefficients needed by Lagrange interpolation.