Hadamard multimode optical imaging transceiver
Abstract
Disclosed is a method and system for simultaneously acquiring and producing results for multiple image modes using a common sensor without optical filtering, scanning, or other moving parts. The system and method utilize the Walsh-Hadamard correlation detection process (e.g., functions/matrix) to provide an all-binary structure that permits seamless bridging between analog and digital domains. An embodiment may capture an incoming optical signal at an optical aperture, convert the optical signal to an electrical signal, pass the electrical signal through a Low-Noise Amplifier (LNA) to create an LNA signal, pass the LNA signal through one or more correlators where each correlator has a corresponding Walsh-Hadamard (WH) binary basis function, calculate a correlation output coefficient for each correlator as a function of the corresponding WH binary basis function in accordance with Walsh-Hadamard mathematical principles, digitize each of the correlation output coefficient by passing each correlation output coefficient through an Analog-to-Digital Converter (ADC), and performing image mode processing on the digitized correlation output coefficients as desired to produce one or more image modes. Some, but not all, potential image modes include: multi-channel access, temporal, range, three-dimensional, and synthetic aperture.
- Inventors:
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1079216
- Patent Number(s):
- 8300113
- Application Number:
- 12/249,763
- Assignee:
- Los Alamos National Security, LLC (Los Alamos, NM)
- DOE Contract Number:
- AC52-06NA25396
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION
Citation Formats
Cooke, Bradly J, Guenther, David C, Tiee, Joe J, Kellum, Mervyn J, Olivas, Nicholas L, Weisse-Bernstein, Nina R, Judd, Stephen L, and Braun, Thomas R. Hadamard multimode optical imaging transceiver. United States: N. p., 2012.
Web.
Cooke, Bradly J, Guenther, David C, Tiee, Joe J, Kellum, Mervyn J, Olivas, Nicholas L, Weisse-Bernstein, Nina R, Judd, Stephen L, & Braun, Thomas R. Hadamard multimode optical imaging transceiver. United States.
Cooke, Bradly J, Guenther, David C, Tiee, Joe J, Kellum, Mervyn J, Olivas, Nicholas L, Weisse-Bernstein, Nina R, Judd, Stephen L, and Braun, Thomas R. Tue .
"Hadamard multimode optical imaging transceiver". United States. https://www.osti.gov/servlets/purl/1079216.
@article{osti_1079216,
title = {Hadamard multimode optical imaging transceiver},
author = {Cooke, Bradly J and Guenther, David C and Tiee, Joe J and Kellum, Mervyn J and Olivas, Nicholas L and Weisse-Bernstein, Nina R and Judd, Stephen L and Braun, Thomas R},
abstractNote = {Disclosed is a method and system for simultaneously acquiring and producing results for multiple image modes using a common sensor without optical filtering, scanning, or other moving parts. The system and method utilize the Walsh-Hadamard correlation detection process (e.g., functions/matrix) to provide an all-binary structure that permits seamless bridging between analog and digital domains. An embodiment may capture an incoming optical signal at an optical aperture, convert the optical signal to an electrical signal, pass the electrical signal through a Low-Noise Amplifier (LNA) to create an LNA signal, pass the LNA signal through one or more correlators where each correlator has a corresponding Walsh-Hadamard (WH) binary basis function, calculate a correlation output coefficient for each correlator as a function of the corresponding WH binary basis function in accordance with Walsh-Hadamard mathematical principles, digitize each of the correlation output coefficient by passing each correlation output coefficient through an Analog-to-Digital Converter (ADC), and performing image mode processing on the digitized correlation output coefficients as desired to produce one or more image modes. Some, but not all, potential image modes include: multi-channel access, temporal, range, three-dimensional, and synthetic aperture.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {10}
}