Imaging through a random phase screen by enhanced backscatter: a physical interpretation.

Area of Science:

• Optics and Photonics
• Wave Phenomena
• Image Reconstruction

Background:

• Enhanced backscatter processes offer potential for imaging diffuser-obscured objects.
• Interferometric systems can determine the modulus of the Fresnel transform for such objects.
• Previous methods relied on exploiting enhanced backscatter and interferometry.

Purpose of the Study:

• To investigate an alternative physical interpretation for imaging diffuser-obscured objects.
• To determine if object information can be obtained without enhanced backscatter exploitation.
• To verify analytically if interferometric measurements are essential.

Main Methods:

• Physical interpretation of imaging obscured objects using lens-like components.
• Analytical verification of the proposed interpretation.
• Comparison of information retrieval with and without interferometric measurements.

Main Results:

• A physical model viewing the object as a superposition of lens-like components was proposed.
• The model suggests information retrieval is possible without enhanced backscatter.
• Analytical verification confirmed that interferometric measurements are not strictly necessary.

Conclusions:

• The modulus of the Fresnel transform of a diffuser-obscured planar reflective object can be determined.
• A novel physical interpretation simplifies the understanding of imaging obscured objects.
• The study demonstrates that enhanced backscatter and interferometry are not required for obtaining object information.