Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Data-Driven Approach for Noise Reduction in Pressure-Sensitive Paint
  Data Based on Modal Expansion and Time-Series Data at Optimally Placed Points   We propose a noise reduction method for unsteady pressure-sensitive paint
(PSP) data based on modal expansion, the coefficients of which are determined
from time-series data at optimally placed points. In this study, the proper
orthogonal decomposition (POD) mode calculated from the time-series PSP data is
used as a modal basis. Based on the POD modes, the points that effectively
represent the features of the pressure distribution are optimally placed by the
sensor optimization technique. Then, the time-dependent coefficient vector of
the POD modes is determined by minimizing the difference between the
time-series pressure data and the reconstructed pressure at the optimal points.
Here, the coefficient vector is assumed to be a sparse vector. The advantage of
the proposed method is a self-contained method, while existing methods use
other data such as pressure tap data for the reduction of the noise. As a
demonstration, we applied the proposed method to the PSP data measuring the
K\'arm\'an vortex street behind a square cylinder. The reconstructed pressure
data is agreed very well with the pressures independently measured by pressure
transducers.

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The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: econ
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The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas