Wave intensity estimation over broad wavelengths based on diffused sensing

Abstract

A novel sensing technique called diffused sensing which exploits homogeneous and isotropically reflected waves is applied for estimating wave intensity. By analyzing the observed signals with a sensor array, the intensity of the wave arriving from each source is estimated. However, it is difficult to estimate the wave intensity from a mixture of waves of various wavelengths. With diffused sensing, observation of waves is devised to decorrelate the transfer function between a sensor and the wave source to that of another sensor; this improves the performances of sensor arrays to distinguish multiple different waves. Numerical simulations showed that diffused sensing can facilitate estimation of the distribution of the wave intensity whose wavelength stretches over a broad range.