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公开(公告)号：WO2022216668A1
公开(公告)日：2022-10-13
申请号：PCT/US2022/023424
申请日：2022-04-05
Inventor： STOCKMASTER, Michael, H. , DOWNEY, Ryan, D.
Abstract: Techniques are provided for automatic gain control processing to reduce adverse effects associated with clipped samples resulting from conversion of analog signals to digital signals. A methodology according to an embodiment includes identifying a clipped sample of the digital signal, for example by comparison of the digitized sample values to a threshold value associated with a full scale value of the converter. The method also includes applying a window function to portions of the digital signal. The window function is configured to attenuate samples of the digital signal within a region centered on the identified clipped sample. A Hilbert finite impulse response (FIR) filter may be applied to the digital signal prior to applying the window function. Parameters of the window function are selected based on frequency response characteristics of the FIR filter and on signal to noise ratio requirements of an application that receives the windowed digital signal.
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公开(公告)号：WO2022216665A1
公开(公告)日：2022-10-13
申请号：PCT/US2022/023420
申请日：2022-04-05
Inventor： COOPER, David, M. , ALTRICHTER, Wayne, W. , BENNETT, Aaron, W. , SHERMAN, Matthew, J.
IPC: G01S19/48
Abstract: The system and method for position, navigation, and timing and more particularly to a system that is time and/or position independent and capable of autonomous transition from GPS to non-GPS navigation. The integrated position, navigation, and timing system uses primary and secondary navigation sensors and primary and secondary navigation measurement sources with a common time reference architecture, an integrated "dual-grid" navigation module, an integrated "dual-grid" navigation Kalman filter, and an integrated "dual-grid" navigation source selection module to provide both geodetic and relative grid timing and/or location among members of a network of platforms, particularly in GPS denied or degraded environments.
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公开(公告)号：WO2022197800A1
公开(公告)日：2022-09-22
申请号：PCT/US2022/020545
申请日：2022-03-16
Inventor： PLEMONS, Danny L. , DUBE, Mark J.
Abstract: The present disclosure relates to a chaff dispensing system that is provided on an aircraft. The chaff dispensing system includes a container, a dispensing assembly, a controller, and a volume of chaff material. The container has a first end, a second end, and a chamber that extends between the first and second ends, and the second end defines an ejection port. The dispensing assembly is provided on the aircraft, and the dispensing assembly is operably engaged to the container. The controller is electrically connected to the dispensing assembly. The volume of chaff material is disposed inside the chamber of the container. The volume of chaff material is dispensed by the dispensing assembly operably through the controller in metered volumes of chaff material. In addition, a first volume of chaff material may be metered at a first time and a second volume chaff material may be metered at a second time in which the second volume of chaff material is different than the first volume of chaff material.
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公开(公告)号：WO2022119828A1
公开(公告)日：2022-06-09
申请号：PCT/US2021/061179
申请日：2021-11-30
Inventor： VAN VALKENBURGH, Christopher, G. , JORGENSON, Richard, N. , SHAPIRO, Gary, M. , ALLEN, Jerrod, S.
Abstract: Techniques are disclosed for providing retractable control fins on an underwater vehicle. The retractable control fins can be extended away from a main hull portion of the underwater vehicle and retracted inwards to a stowage region within the hull portion to protect the fins from damage and reduce an overall outer diameter (e.g., in the case of a cylindrical body) of the underwater vehicle. In some embodiments, the control fins are folded inwards to reduce the vehicle diameter. In other embodiments, the control fins are pulled inwards using a rotating structure designed to slide the control fins through an opening and into an inner portion of the hull to reduce the vehicle diameter. The retraction of the fins through the various retraction mechanisms reduces the envelope diameter of the underwater vehicle.
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公开(公告)号：WO2022119760A1
公开(公告)日：2022-06-09
申请号：PCT/US2021/060947
申请日：2021-11-29
Inventor： BUDNI, Peter, A. , ENMAN, Alan, R. , MOREL, Yannick, C.
Abstract: The system and method of using an ultra-short pulse mid and long wave infrared laser. The system is seeded with a 2 μm laser source having a pulse duration in the femtosecond range. The beam is stretched, to increase the pulse duration, and the beam is amplified, to increase an energy level of the laser beam. Both mid wave IR and long wave IR seed beams are first generated, and then amplified via one or more optical parametric chirped-pulse amplification stages. A compressor may be used to compress one or more of the output beams to achieve high peak power and controllable pulse duration in the output beams. The output beams may then be used to create atmospheric or material effects at km range.
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Patent Agency Ranking
公开(公告)号：WO2021236193A2
公开(公告)日：2021-11-25
申请号：PCT/US2021/020029
申请日：2021-02-26
Inventor： SHERMAN, Matthew J.
IPC: H04W12/63 , H04W12/121 , H04W24/08 , H04W16/18 , G06N3/006 , G06N5/04 , H04B2201/692 , H04B7/18502 , H04L27/0006
Abstract: A system and method of cognitive radio control to allow for low probability of detection and/or low probability of exploitation communications in a contested or hostile environment. The cognitive radio system of the present disclosure can reason over policy constraints and real-time data to make dynamic changes to mission parameters in real-time.
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147.发明申请
公开(公告)号：WO2021216519A1
公开(公告)日：2021-10-28
申请号：PCT/US2021/028112
申请日：2021-04-20
Inventor： TOWNLEY, Martin, M. , BEAUDEAU, Jonathan, P.
Abstract: A method of mitigating interference in a received wireless signal by adaptive digital filtering efficiently deploys computational resources by using at least one of a DDC, weight generator, and scrubber to perform calculations necessary to generate a plurality of output streams. Embodiments transition a weight generator and scrubber between receiver frequencies according to a known frequency hopping pattern of an FHSS transmission. Other embodiments dedicate scrubbers to receiver frequencies while transitioning a weigh generator between the frequencies to generate sets of weights that can be persistently used by the scrubbers. Embodiments generate sets of weights according to one received multipath signal copy, and then apply the generated weights to filter additional multipath copes received at the same frequency. Various embodiments dedicate a DDC to each receive frequency to form a bank of down-converted outputs, from among which each weigh generator can select primary and reference inputs.
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公开(公告)号：WO2021142080A1
公开(公告)日：2021-07-15
申请号：PCT/US2021/012443
申请日：2021-01-07
Inventor： STUENKEL, Mark, E. , HICKLE, Mark, D.
IPC: H04L27/20 , H04B17/318 , H04L27/06 , H04L27/12 , H04W52/22 , H04W52/24 , H03H11/04 , H03L7/0812 , H04B1/1081 , H04K3/42 , H04L27/0002
Abstract: A radio frequency (RF) filter includes a signal conditioning circuit and a bandstop filter. The signal conditioning circuit receives a broadband RF signal that includes both a jamming signal at a jamming frequency and a signal of interest and generates a plurality of clock signals. Each of the plurality of clock signals has a substantially same frequency as the jamming frequency, but a different phase shift. The bandstop filter receives the RF signal and the plurality of clock signals. The bandstop filter attenuates signals within a bandstop centered at the frequency of the plurality of clock signals. A self-tuning N-path filter is provided.
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149.发明申请
公开(公告)号：WO2021127146A1
公开(公告)日：2021-06-24
申请号：PCT/US2020/065555
申请日：2020-12-17
Inventor： CALI, Joseph, D. , GRENS, Curtis, M. , HARWOOD, Richard, L. , MADISON, Gary, M.
Abstract: A phase locked loop (PLL) control system includes a voltage-controlled oscillator (VCO) circuit including an inductor and a plurality of capacitors arranged in parallel with the inductor. Digitally enabling or disabling the capacitors in a thermometer coded manner via switches creates tuning states that provide additional frequency range, and each has a limited range of VCO frequency tuning. Slowly ramping the switched capacitance, by implementing the capacitor as a varactor, from one thermal code to the next, provides a wider continuous VCO frequency tuning range for use in the PLL. The slow transition between tuning states allows the PLL to remain in lock, useful under changing operating conditions. Specifically, under changing operating conditions, digital logic detects the PLL tuning control voltage approaching the edge of a VCO band and will add/reduce VCO capacitance effectively transitioning into the adjacent VCO band while the PLL maintains lock via its normal feedback loop.
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公开(公告)号：WO2021091601A2
公开(公告)日：2021-05-14
申请号：PCT/US2020/041920
申请日：2020-07-14
Inventor： FREY, Jr., Robert D. , AFFLECK, Maxwell L. , BATCHELDER, Jason H. , CULLEN, Joseph P. , ROBICHAUD, Matthew H.
IPC: F41G7/26 , F41G7/24 , F41G7/22 , F41G7/2246 , F41G7/226 , F41G7/2293 , F42B10/60 , F42B15/01 , F42B15/105 , G01J1/0214 , G01J1/0219 , G01J1/0252 , G01J1/0407 , G01J1/0422 , G01J11/00
Abstract: An optical seeker assembly having an optical detector located within the wing or canards of a precision guided munition. The optical seeker provides on-wing processing that generates low bandwidth detection data that can be easily transferred to a primary CPU located within the main body or fuselage of the precision guided munition. The on-wing processing reduces or eliminates the need for optical fibers extending between an optical wedge and an optical detector to reduce the likelihood of optical fibers from impeding in the mechanical deployment of the wing and reduces losses. The reduction or elimination of optical fibers between the optical wedge and the optical detector further enables the optical detection assembly to have a higher pixel ratio or transmitting raw data between the wedge and the detector by sending sampled detection data across a low bandwidth link to a CPU in the main body.
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