SYSTEM AND METHOD FOR DETERMINING INCOMING OBSERVATION TO BE OUT-OF-DISTRIBUTION (OOD) SAMPLE DURING NEURAL NETWORK (NN) INFERENCE

    公开(公告)号:US20250069381A1

    公开(公告)日:2025-02-27

    申请号:US18238180

    申请日:2023-08-25

    Abstract: A system may include at least one processor configured to: obtain a trained neural network (NN); obtain or calculate at least one average feature information associated with the trained NN, each of the at least one average feature information including a given average feature information summarizing in-class statistics that each layer of the trained NN uses for a given class; receive an incoming observation influencing a given layer; calculate a corresponding feature information of the incoming observation, the corresponding feature information summarizing statistics of the incoming observation for the given layer; classify the incoming observation as being in the given class; calculate a distance score associated with a distance between the corresponding feature information of the incoming observation and the given average feature information; determine the incoming observation is an out-of-distribution (OOD) sample; and output an alert indicating the incoming observation is OOD and/or discard the incoming observation's classification.

    TRANSMISSION DIVERSITY FOR ALE NETWORKS

    公开(公告)号:US20250063519A1

    公开(公告)日:2025-02-20

    申请号:US18233796

    申请日:2023-08-14

    Abstract: In a system for establishing connectivity in a HF ALE cellular network, stations are organized to sound each channel, synchronized to every other station in the network. All stations make identical sounding transmissions using a single address, synchronized such that the differential timing within the coverage area remains within the mobile radios' delay spread capability. Synchronized soundings allow the mobile radio to consistently connect to the best available channel. The stations may be synchronized via a central control function. Alternatively, the stations may perform soundings based on a predetermined schedule. Where the propagation time to the mobile radio is known, or determinable within some threshold, the stations may apply a delay to the sounding transmissions to ensure that the sounding transmissions from each of the stations reaches the mobile radio at the same time within some acceptable margin.

    EFVS INTEGRATED INTERFACE FOR IMAGE DISPLAY CONTROL

    公开(公告)号:US20250054103A1

    公开(公告)日:2025-02-13

    申请号:US18232946

    申请日:2023-08-11

    Abstract: An enhanced vision system (EVS) is integrated with a heads-up display (HUD). The EVS generates image of an external scene. The EVS generates the images without repeatedly generating the images when a mode of the HUD changes. The EVS includes an expanded interface, where inputs from the HUD are used in the internal processing of the EVS. The HUD then displays information in a graphical and alphanumeric format. The information can include an enhanced vision image from the EVS and/or a synthetic vision image from a synthetic vision system (SVS). The enhanced vision image can be merged with a synthetic vision image to provide a combined vision image.

    Attention redirection within AR/XR immersive environments

    公开(公告)号:US12210679B1

    公开(公告)日:2025-01-28

    申请号:US18406945

    申请日:2024-01-08

    Inventor: David Watkins

    Abstract: A system and method for attention redirection is disclosed. The system may include a display, an environment imaging sensor configured to receive environment images comprising elements of an environment, a user state sensor configured to receive user images comprising a user gaze, and a controller. The controller may be configured to execute program instructions to receive environment images, identify elements and their identities and locations, receive user images comprising the user gaze, track the user gaze direction, determine salience values associated with the elements, and direct a focus adjustment of at least one region of the display based on the salience values.

    FULL-DUPLEX CIRCULAR PARASITIC ARRAY ASSEMBLY

    公开(公告)号:US20250030163A1

    公开(公告)日:2025-01-23

    申请号:US18223883

    申请日:2023-07-19

    Abstract: A system may include a circular parasitic array (CPA) assembly including: a first CPA configured to at least one of transmit or receive; and a second CPA configured to at least one of transmit or receive; wherein the first CPA is configured to one of transmit or receive over a first bandwidth while the second CPA is configured to another of transmit or receive over the first bandwidth or a second bandwidth, wherein the first CPA and the second CPA are physically separated by a distance so as to provide on-frequency isolation.

    ELETRONICALLY STEERED ANTENNA SUBSTRATE EMBEDDED RESONATOR FILTERS

    公开(公告)号:US20250015497A1

    公开(公告)日:2025-01-09

    申请号:US18218308

    申请日:2023-07-05

    Abstract: An ESA antenna includes a layer of filters between the layer of radiating elements and the ground layer. The filter layer obviates certain post processing steps. The filters define a passband at the operating range of the antenna and a stopband defined to prevent crosstalk or reduce known external interference. Each filter includes alternating cells of a resonator cell formed by two split ring resonators and a resonator cell formed by a complementary split ring resonator and a complementary patch/stub. A particular implementation of the filter defines an operating range around 23 gigahertz with a passband to stopband transition of less than 500 megahertz. Vias may connect the filter layer to a surface component layer with beamforming integrated circuits, bypassing the routing layer.

    GROUND CLUTTER SUPPRESSION AND RUNWAY IMAGING VIA RADAR GROUND MAPPING

    公开(公告)号:US20250012919A1

    公开(公告)日:2025-01-09

    申请号:US18217751

    申请日:2023-07-03

    Abstract: A radar system includes an AESA and at least one ground mapping linear array that operate on a separate receive channel and send I/Q digital terrain mapping data to a radar processing unit. The linear arrays provide constant ground mapping. The AESA may have more than one panel. Panels may be arranged as a chevron with the linear arrays disposed at the periphery. The AESA and linear arrays may be configured as a radar interferometer for track location and/or geolocation. The linear arrays may be configured as near field probes for insitu calibration.

    System, method, and outphasing power amplifier having vector generator and IQ modulators

    公开(公告)号:US12191827B2

    公开(公告)日:2025-01-07

    申请号:US17576291

    申请日:2022-01-14

    Inventor: Timothy L. Kean

    Abstract: A system may include a first IQ modulator configured to: based on an I and a Q, produce a zero to ninety degree variable phase shifted output signal that changes relative to an input envelope of an RF drive waveform of the RF drive. The system may include a first amplifier path configured to: output a first phase modulated signal. The system may include a second IQ modulator configured to: based on the I and the −Q, produce a zero to negative ninety degree variable phase shifted output signal that changes relative to the input envelope. The system may include a second amplifier path configured to: output a second phase modulated signal, wherein the second phase modulated signal is complementary to the first phase modulated signal. The system may include a vector generator configured to: generate the Q and the −Q for the first and second IQ modulators, respectively.

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