Stability estimates for the inverse source problem with passive measurements
arxiv(2024)
摘要
We consider the multi-frequency inverse source problem in the presence of a
non-homogeneous medium using passive measurements. Precisely, we derive
stability estimates for determining the source from the knowledge of only the
imaginary part of the radiated field on the boundary for multiple frequencies.
The proof combines a spectral decomposition with a quantification of the unique
continuation of the resolvent as a holomorphic function of the frequency. The
obtained results show that the inverse problem is well posed when the frequency
band is larger than the spatial frequency of the source.
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