Multifrequency interferometric imaging with intensity-only measurements
It addresses the challenge of depth recovery in interferometric imaging without phase information, offering a practical solution for applications where phase measurement is difficult.
This paper introduces an illumination strategy for interferometric imaging that enables robust depth recovery from intensity-only measurements, eliminating the need for phase reconstruction. The method achieves no loss of resolution in homogeneous media and robust imaging in weakly inhomogeneous media with slightly reduced resolution.
We propose an illumination strategy for interferometric imaging that allows for robust depth recovery from intensity-only measurements. For an array with colocated sources and receivers, we show that all the possible interferometric data for multiple sources, receivers and frequencies can be recovered from intensity-only measurements provided that we have sufficient source location and frequency illumination diversity. There is no need for phase reconstruction in this approach. Using interferometric imaging methods we show that in homogeneous media there is no loss of resolution when imaging with intensities-only. If in these imaging methods we reduce incoherence by restricting the multifrequency interferometric data to nearby array elements and nearby frequencies we obtain robust images in weakly inhomogeneous background media with a somewhat reduced resolution.