M-ary frequency presence modulation communication system and method

    公开(公告)号:US10353194B2

    公开(公告)日:2019-07-16

    申请号:US15394033

    申请日:2016-12-29

    Inventor: Keith A. Blanks

    Abstract: An optical communication system having a data transmitter which includes: at least one optical emission device to output light energy as an optical beam having an operating bandwidth; a beam dividing device to receive and divide the operating bandwidth into plural communication bands; a frequency presence modulation unit to: spectrally segregate the bandwidth of at least one communication band into plural channels, and modulate the bandwidth to selectively produce an optical output signal with wavelengths that correspond to one or more of the channels, wherein presence and absence of energy within channels constitute an information packet for data communication; a controller for providing a control signal to the frequency presence modulation unit to spectrally segregate the bandwidth of the at least one communication band into the plural channels; and a telescope to transmit the optical output signal.

    Stimulated Raman Scattering in the atmosphere for wavefront clean-up and turbulence compensation of high-energy laser beams

    公开(公告)号:US10241052B1

    公开(公告)日:2019-03-26

    申请号:US16040733

    申请日:2018-07-20

    Inventor: James A. Davis

    Abstract: An optical system includes a first light source configured to generate a first light beam having a first power. The optical system includes a second light source configured to generate at least one second light beam having a second power. The second power can be greater than the first power. The optical system includes a device for a least partially co-aligning the at least one second light beam of the second power with the first light beam of the first power in a parallel or near-parallel pattern and within a region of atmospheric space so that energy will transfer from photons of the at least one second light beam of the second power to photons of the first light beam of the first power within the region of atmospheric space via Stimulated Raman Scattering (SRS).

    M-ARY frequency presence modulation communication system and method

    公开(公告)号:US10050715B1

    公开(公告)日:2018-08-14

    申请号:US15845379

    申请日:2017-12-18

    Abstract: An optical communication system includes a data transmitter. The data transmitter includes at least one optical emission device to output light energy as an optical beam having an operating bandwidth; a beam dividing device arranged to divide the operating bandwidth of the optical beam into bandwidth portions of plural communication bands; an array of graphene switches to: spectrally segregate a bandwidth portion of at least one communication band into plural channels by adjusting at least one graphene switch, and modulate the bandwidth portion to selectively produce an optical output signal with wavelengths that correspond to one or more of the channels, wherein a presence and absence of energy within channels of the communication band will constitute an information packet for data communication. The system includes a focusing grating to receive and focus a first set of wavelengths of the optical output signal reflected by the array of graphene switches.

    Modular compact high energy laser system

    公开(公告)号:US12283787B2

    公开(公告)日:2025-04-22

    申请号:US17391237

    申请日:2021-08-02

    Abstract: Described is a directed energy system that has a compact and modular configuration and that enables movement/assembly by a two-user team. The directed energy system includes one or more high-power laser sources that house one or more high-power fiber amplifiers, a beam combiner optically coupled to the one or more high-power laser sources, a beam director coupled to the beam combiner, a command and control module configurable to control operation of the one or more high-power fiber amplifiers. The directed energy system also includes a handheld controller with an integrated monitor, the handheld controller configurable to send control signals to the handheld controller module to control operation of the handheld controller module and a power module that includes batteries and power converters that provide electrical power required to run the directed energy system. Cooling of the directed energy system is performed only by ambient air contacting the directed energy system and without application of any external coolant medium to the system.

    SYSTEM AND METHOD FOR DETECTING AN OUT-OF-DISTRIBUTION DATA SAMPLE BASED ON UNCERTAINTY ADVERSARIAL TRAINING

    公开(公告)号:US20240303503A1

    公开(公告)日:2024-09-12

    申请号:US18485499

    申请日:2023-10-12

    CPC classification number: G06N3/094 G06N3/045 G06N3/0464

    Abstract: Provided are systems, methods, and computer program products including at least one processor programmed or configured to perturb at least one training dataset based on mutual information extracted from an ensemble machine learning model to provide at least one adversarial training dataset, execute at least two machine learning models of an ensemble machine learning model, train at least two machine learning models with the at least one training dataset by feeding an input or output of one of the at least two machine learning models to the other of the at least two machine learning models, train the ensemble machine learning model with the at least one adversarial training dataset, receive a runtime input from a client device, and provide the runtime input to the trained ensemble machine learning model to generate a signal output indicating that the runtime input includes an out-of-distribution sample.

    Systems and methods for generating trust metrics for sensor data

    公开(公告)号:US12058146B2

    公开(公告)日:2024-08-06

    申请号:US16919814

    申请日:2020-07-02

    Abstract: A method for generating trust metrics for sensor data is disclosed. The method can include receiving the sensor data from at least one sensor associated with a platform; categorizing the sensor data into one or more sensor data types; applying one or more threat detection algorithms to the sensor data based on the one or more sensor data types to detect one or more threats to the integrity of the sensor data; calculating a detection certainty for the sensor data from the at least one sensor, the detection certainty indicating a probability that the one or more threats are affecting the integrity of the sensor data; and generating a trust metric for the sensor data of the at least one sensor based on the detection certainty for the sensor data from the at least one sensor.

Patent Agency Ranking