The Double Fourier Sphere Method (DFSM) is an advanced computational technique employed primarily in the fields of signal processing, acoustics, and electromagnetic scattering. This method is particularly useful for solving problems related to wave propagation, scattering, and imaging in complex and three-dimensional environments. ### Key Concepts: 1. **Fourier Transforms**: The method utilizes the principles of Fourier transforms, which decompose functions (such as waveforms) into their constituent frequencies.
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