Back to results
US 10,295,658 B2Granted
Optical detection system
AssigneeThe Johns Hopkins University
InventorsWilliam E. Torruellas, Robert L. Fry, Isaac N. Bankman, David M. Brown, Gil Tadmor, Thomas Raphael Clark, Jr.
Life of this patent
Estimating the term…
Abstract
An active optical detection system includes an optical transmitter configured to transmit light in a signal pattern and an optical receiver configured to receive light and determine a correlation between the received light and the signal pattern. The correlation of the received light and the signal pattern is indicative of range to an object.
Claims17
An active optical detection system comprising:
- a signal generator configured to generate a plurality of signal patterns, each signal pattern comprising a unique transmit bit pattern;
- an optical transmitter comprising a plurality of light sources, each light source being aligned to a different transmission angle, wherein the optical transmitter is configured to transmit light from each light source in accordance with one of the signal patterns of the plurality of signal patterns;
- an optical receiver configured to receive light as a receive bit pattern;
- and
- processing circuitry configured to:
- determine a correlation between the receive bit pattern and one of the unique transmit bit patterns of the plurality of signal patterns, wherein the correlation between the receive bit pattern and the one of the unique transmit bit patterns determines a correlation spike that is indicative of a range to an object;
- and
- determine a direction to the object based on the correlation and the transmission angle associated with the signal pattern for the one of the unique transmit bit patterns.
5 more elements
A method comprising:
- generating a plurality of signal patterns, each signal pattern comprising a unique transmit bit pattern;
- transmitting light via a plurality of light sources, each light source being aligned to a different transmission angle and each light source transmitting one of the plurality of signal patterns;
- receiving the light at an active optical detection system as a receive bit pattern;
- determining a correlation between the receive bit pattern and one of the unique transmit bit patterns of the plurality of signal patterns;
- determining, by the active optical detection system, a range to an object based on a correlation spike determined from the correlation between the receive bit pattern and the one of the unique transmit bit patterns;
- and
- determine a direction to the object based on the correlation and the transmission angle associated with the signal pattern for the one of the unique transmit bit patterns.
4 more elements
Dependencies are inferred from the claim text.