Single Aperture Pseudorandom Encoded Multi-Dimensional Maritime Sensing Systems with Computationally
Abstract
Project Abstract and Summary- Approved for Public ReleaseIn this project, we propose to investigate multi-dimensional maritime sensi,ng system. The system uses 4D or higher [Spatial + Temporal + Polarimetric] lensless signal detection approach with a single apertur,e or multiple apertures incorporating pseudorandom encoding to provide computationally efficient photon information capture for unde,rwater communication. We intend to demonstrate that the system is robust to substantial under sampling of the captured signal for ef,ficient computation, high bandwidth communication, and rapid signal detection. Currently, we have been investigating a novel four-di,mensional (4D) sensing approach based on 3D time varying integral sensing and imaging architecture with distributed high resolution,image sensors for underwater communication. We have shown that this novel approach can function in the presence of turbidity, with a, small number of photons, poor SNR and results in a substantial increase inchannel capacity for underwater communication. We have de,monstrated that there are substantial benefits in using four-dimensional sensing for underwater optical sensing of time domain signa,ls including the presence of occlusion, obscuration, and turbidity. The main challenge with the current approach is the amount of co,mputations required. The captured 4D signals (3D + temporal fluctuations) are reconstructed from multiple videos obtained by the arr,ay of CMOS image sensors which is computationally challenging. While mega frame rate cameras are available, the 4D signal reconstruc,tions require extensive hardware. The main motivation for the new proposal and the new approach to investigate pseudorandom encoded,multi-dimensional sensing to obtain a computationally efficient receiver with photon information optimization. We wish to demonstrat,e the feasibility of lensless pseudorandom encoded processors in the spatial domain. We believe that substantial dimensionality redu,ction is feasible with the proposed approach. We shall demonstrate mathematically and experimentally the robustness of the proposed,approach to dimensionality reduction. To the best of our knowledge, this is the first investigation of multi-dimensional maritime se,nsing that uses 4D or higher [Spatial + Temporal + Polarimetric] lensless pseudorandom encoded signal detection approach.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 01, 2022
- Source ID
- N000142212375
Entities
People
- Bahram Javidi
Organizations
- Office of Naval Research
- United States Navy
- University of Connecticut