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公开(公告)号：US20250015551A1
公开(公告)日：2025-01-09
申请号：US18709678
申请日：2021-11-19
Inventor： Spencer L. Horton , Ezra S. Allee
IPC: H01S3/067 , H01S3/094 , H01S3/0941 , H01S3/16 , H01S3/23
Abstract: Techniques to passively suppress or otherwise reduce stimulated Brillouin scattering (SBS) in a pumped fiber laser system. The system can be co-pumped with a tandem pumping technique, and counter-pumped with the direct diode pumping method. In an example, a pumped fiber laser system includes a fiber, a tandem pump, and a direct diode pump. The fiber has a core, an inner cladding around the core, and an outer cladding around the inner cladding. The tandem pump co-pumps light of a first wavelength in the inner cladding from a first end of the fiber, and the direct diode pump counter-pumps light of a second wavelength in the outer cladding from a second end of the fiber. A longitudinal temperature gradient can form along the fiber laser in response to this hybrid-pumping, which can combine both tandem and direct diode pumping.
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公开(公告)号：US20250003716A1
公开(公告)日：2025-01-02
申请号：US18344362
申请日：2023-06-29
Inventor： Jason H. Batchelder , Matthew F. Chrobak , Tyler Nickerson , Richie Spitsberg
IPC: F41G7/22
Abstract: A feed forward guidance kit for a ballistic device that includes at least one optical imaging sensor, a processor that is operatively in communication with the at least one optical imaging sensor, and a feed forward guidance protocol that is stored on a computer readable medium and that is operatively in communication with the processor. When the at least one optical imaging sensor initially intercepts an aircraft at an initial location during combat, the feed forward guidance protocol instructs the processor to proactively calculate an anticipated second position of the aircraft as an orientation of the aircraft changes from an initial orientation to a translated orientation.
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公开(公告)号：US20240428399A1
公开(公告)日：2024-12-26
申请号：US18337827
申请日：2023-06-20
Inventor： Tao Wang , Helen Vo , Helen F. Webb , Victor T. Tom
IPC: G06T7/00 , G06V10/44 , G06V10/774 , G06V10/82
Abstract: Hybrid MB/ML techniques for automated printed circuit board (PCB) defect detection. In one example, a PCB inspection system implements a hybrid solution using model based (MB) and machine learning (ML) technologies to detect possible defects in a PCB via an automated image capture device and processing methodology. The processing methodology fuses features from MB and ML at the latent representation. An autoencoder can be used to learn the fused data by training a neural network to produce a reconstructed image that can be compared to an original image to generate a reconstruction error value. The system produces an output indicating detection of a defect in one or more features of interest based on the reconstruction error value transgressing a threshold value.
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公开(公告)号：US20240402356A1
公开(公告)日：2024-12-05
申请号：US17654308
申请日：2022-03-10
Inventor： John E. Acheson , Mitchell T. Dennis , John R. Bader , Jordan M. Jump
Abstract: A signal acquisition and tracking device includes an input configured to receive a global navigation satellite system (GNSS) signal, a software-based processor configured to execute software instructions to acquire the GNSS signal via the input and to generate, based on the acquired signal, one or more signal tracking parameters, and a hardware logic circuit operatively coupled to the processor. The logic circuit is configured to track the GNSS signal independently of the processor using the one or more signal tracking parameters generated by the processor. In some examples, the processor is configured to pull in and center the GNSS signal in time and frequency, and the logic circuit is further configured to track the pulled in and centered GNSS signal independently of the processor. In some examples, the processor acquires the signal and then hands-off control to the logic circuit for subsequent tracking of the signal.
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公开(公告)号：US12160494B2
公开(公告)日：2024-12-03
申请号：US18309896
申请日：2023-05-01
Inventor： Daniel Wasson , Anthony J. Crawford , Michael A. Zalucki
IPC: H04L7/00
Abstract: Techniques are provided for non-integer interpolation for signal sampling. A system implementing the techniques according to an embodiment includes a memory configured to store frequency values associated with an input signal sampled at a first clock rate. The system also includes a clock phase detector configured to detect phase alignment between a first clock signal associated with the first clock rate and a second clock signal associated with a second clock rate. The system further includes a read circuit configured to adjust an interpolation time interval in response to the detected phase alignment and to read the frequency values from the memory at the adjusted interpolation time interval. The system further includes a phase accumulator configured to accumulated phase as a sum of the frequency values read from the memory. The system further includes a waveform generator configured to generate an output waveform sample based on the accumulated phase.
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Patent Agency Ranking
公开(公告)号：US20240381584A1
公开(公告)日：2024-11-14
申请号：US18195623
申请日：2023-05-10
Inventor： Richard E. Berkenbush , Robert E. Scholl , Meredith T. Thanos , Robert S. Foster
Abstract: A chassis configured to hold a cards of at least two form factors comprising: slots disposed in an inner portion the chassis, wherein the slots are aligned with one another and configured to act as card guides; a mid-height structure disposed adjacent a side wall of the chassis, the mid-height structure comprising a second plurality of slots and a third plurality of slots disposed on top and bottom surfaces of the mid-height structure that are substantially parallel to top and bottom walls of the chassis; and a plurality of cooling channels disposed within the walls of the chassis as well as within the mid-height structure, wherein the second and third plurality of slots are configured to align with at least a subset of the plurality of slots disposed in the top and bottom chassis walls and to act as card guides.
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公开(公告)号：US20240369680A1
公开(公告)日：2024-11-07
申请号：US18317618
申请日：2023-05-15
Inventor： David A. Mouille
Abstract: A hybrid electronic warfare and communications system (EW/COMM) eliminates the space, power, weight, and cost of a dedicated communication system by exchanging messages with other nodes in a network as phase modulations of radar jamming signals. Some embodiments impose message phase modulations onto CW jamming signals, while other embodiments interleave message phase modulations with pseudorandom phase modulations of the jamming signals. Message chip rates can be matched to pseudorandom phase modulation chip rates. Messages are thereby obfuscated as either phase noise or random phase modulation of the jamming signals. Messages can be encoded as BPSK or QPSK modulations. Messages can be preceded by pre-established headers known to other nodes, and distinguished thereby from random noise modulations. Some embodiments include a dedicated COMMS module and/or antenna, while other embodiments implement the communications function mostly or entirely in software. Messages can be encrypted before transmission and decrypted after reception.
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298.发明公开公开(公告)号：US20240361466A1
公开(公告)日：2024-10-31
申请号：US18308095
申请日：2023-04-27
Inventor： John Jay Weger
Abstract: A Global Positioning System (GPS) digital antenna controller is provided, comprising antenna electronics, a code generator, and an interface. The antenna electronics can be configured to receive a GPS signal. The code generator can be configured to generate a pilot code signal that is synchronized to the DAE local clock reference. The interface can be configured to send the GPS signal and the code signal to a GPS receiver. A system may comprise the GPS digital antenna controller and GPS receiver. The GPS receiver can comprise a second code generator and a processor configured to resolve a timing difference based on the pilot code signal and a second code signal of the second code generator. The controller may be remote from the receiver. The interface may comprise an asynchronous data interface (e.g., Ethernet, USB, Infiniband, or Firewire). To resolve the timing difference may involve GPS code and carrier tracking.
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公开(公告)号：US12126816B2
公开(公告)日：2024-10-22
申请号：US18174299
申请日：2023-02-24
Inventor： Chien-Horn Lu , Mark Hess , William G. Tian , Angel Lopez , Edmond Tam
IPC: G06K9/36 , G06K9/46 , H04N19/167 , H04N19/30 , H04N23/80
CPC classification number: H04N19/167 , H04N19/30 , H04N23/80
Abstract: Techniques to provide compression and/or decompression. A method includes obtaining a first set of control points specifying a first set of compression ratios corresponding to respective first regions of a compression domain, and minimum and maximum uncompressed values within the compression domain. The method can further include scaling the first set of control points based on the minimum and maximum uncompressed values to obtain a scaled set of control points, wherein a first scaled control point is located at the minimum uncompressed value, and a last scaled control point is located at the maximum uncompressed value. The method can further include adjusting at least one scaled control point such that a first slope does not exceed 1. The method can further include compressing or decompressing between the compression domain and a range of compressed values, wherein a respective compression ratio corresponds to a respective slope of the set of slopes.
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公开(公告)号：US12123941B2
公开(公告)日：2024-10-22
申请号：US18189571
申请日：2023-03-24
Inventor： Robert F. Saracino , John M. Cosenza , Richard J. Lavery
CPC classification number: G01S13/78 , G01S13/762 , G01S13/767
Abstract: Techniques are provided for an Identification Friend or Foe (IFF) transponder. A system implementing the techniques according to an embodiment includes an antenna array configured to operate in an omnidirectional mode and a steered directional mode. The system also includes a receiver configured to receive signals provided through the antenna array while operating in the omnidirectional mode and a detector configured to detect an IFF interrogation message in the received signals. The system further includes an angle of arrival (AOA) estimator configured to operate the antenna array in the steered directional mode to estimate an AOA of the IFF interrogation message. The system further includes a transmitter configured to operate the antenna array in the steered directional mode to transmit an IFF response message in the estimated AOA direction. The transmit power of the IFF response message may be based on, for example, the steering gain of the antenna array.
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