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公开(公告)号：US20210305481A1
公开(公告)日：2021-09-30
申请号：US17265385
申请日：2018-10-04
Inventor： Maxwell L. Affleck , Shawn P. Sharp , Mike Pena , Allison Moulton
Abstract: The system and method for phase noise reduction and/or vibration reduction in assemblies using piezoelectric passive resonant shunt damping or active vibration cancellation/compensation techniques. In some cases a circuit card or similar structure comprises an embedded piezoelectric device to reduce the effects of vibration on any sensitive device or component thereon. The system has a resonant shunt circuit or other control circuit to provide electrical loading to the piezoelectric device and may be single frequency mode or multimodal. The system may also be adaptively controlled by a microprocessor or the like, so that the vibration sensitive devices are monitored and controlled over time to extend the life of the device.
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公开(公告)号：US20210303686A1
公开(公告)日：2021-09-30
申请号：US16834461
申请日：2020-03-30
Inventor： Jonathan Shuai , Ty M. Danet , Kalyanaraman Vaidyanathan
Abstract: A system and method is provided that tests and determines whether candidate artificial intelligence model contains a Trojan from when it was trained and using the outcome determination of the Trojan to determine whether the candidate artificial intelligence model should be deployed. The system utilizes a first artificial intelligence that operates as a data generator and a second artificial intelligence that operates as a discriminator to determine whether the candidate artificial intelligence contains a Trojan. The first artificial intelligence combines sets of data with random Trojan triggers and the second artificial intelligence discriminates output classifications from the candidate artificial intelligence model to determine whether the Trojan is present based on probability outputs.
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公开(公告)号：US20210293526A1
公开(公告)日：2021-09-23
申请号：US16823918
申请日：2020-03-19
Inventor： Jacob D. Garan
Abstract: A shearography system uses a Geometric phase or Pancharatnam-Berry (PB) phase element to shear an image. A PB phase element provides a non-dynamical phase change used for wavefront control and results in uniform half-wave of retardation. Geometric phase may also be utilized to capture snapshot phase-resolved wavefront measurements and shearograms via a focal plane array with micro-patterned linear polarizers of different orientations. Wavefront shape control arises when the local orientation of the retarding media is spatially varied. One or more PB phase elements can be flipped or rotated to perform multiple tasks depending on its orientation. Two PB elements can be used in succession in order to provide a variable purely spatial shift between interfering wavefronts. The spatial offset of the light exiting the second element can be adjusted simply by changing the spacing between the two geometric phase surfaces. In shearography, this corresponds to an adjustable shear length.
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公开(公告)号：US20210278174A1
公开(公告)日：2021-09-09
申请号：US16552711
申请日：2019-08-27
Inventor： Richard Janik
Abstract: The fuse mode of a laser guided munition is remotely set and/or changed by encoding fuse mode information onto fuse mode designating light received by the light detector of the munition. Embodiments do not require hardware modification of existing munitions and/or control systems. The mode designating light can be the target designating laser light, and the fuse mode information can be encoded together with counter counter measure (CCM) information. Or the mode designating light source can be a separate laser or non-laser light source. Encoding of the fuse mode information can be by modulation and/or wavelength selection of the mode designating light. In embodiments, the fuse mode can be selected before and/or after launch of the munition.
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公开(公告)号：US11105655B2
公开(公告)日：2021-08-31
申请号：US15785777
申请日：2017-10-17
Inventor： Wayne W. Altrichter
Abstract: A system and method for integrated data registration includes at least one host system and a first sensor where the first sensor provides a first input data. The system and method may further include a second sensor where the second sensor provides a second input data, a first navigation data source where the first navigation data source provides a third input data and a second navigation data source where the second navigation data source provides a fourth input data. The system and method may further include at least one non-transitory computer readable storage medium, in operative communication with the host system, first sensor, the second sensor, the first navigation source and the second navigation source, having at least one set of instructions encoded thereon that, when executed by at least one processor, performs operations to perform integrated data registration.
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Patent Agency Ranking
公开(公告)号：US11104457B1
公开(公告)日：2021-08-31
申请号：US17116246
申请日：2020-12-09
Inventor： Richard M. Brosh , Jonathan W. Edwards , Eric H. Liu , Todd W. Montgomery , Christopher T. Scioscia , Daniel L. Stanley
IPC: H03K17/08 , B64G1/42 , H03K17/687 , H03K19/003 , G05F1/46 , G01R1/20 , G01R19/165
Abstract: A power distribution device includes an input, an output, a power switch controller, and a voltage isolation device. The power distribution device includes, and is designed to provide power to, for example, non-radiation-tolerant or non-radiation hardened components for use in low Earth orbit (LEO) missions. The input is configured to receive power from a power source. The output is configured to provide the power to an electrical load. The power switch controller is configured to selectively operate the power distribution device in a first mode responsive to a first event, and to selectively operate the power distribution device in a second mode responsive to a second event. The voltage isolation device includes a plurality of switches configured, in the first mode, to pass the power between the input and the output, and, in the second mode, to interrupt the passage of the power between the input and the output.
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公开(公告)号：US20210258001A1
公开(公告)日：2021-08-19
申请号：US16571620
申请日：2019-09-16
Inventor： Gary M. Madison
Abstract: A CMOS divide by two circuit device comprising a two phase signal input, a first track and hold circuit, a second track and hold circuit, where the signal path from input to output of each track and hold circuit comprises a single switch and a single inverter. In hold mode the circuit device provides cross-coupled inverters with only two stable states, obviating the need for any dedicated start-up, initialization, or phase-forcing circuitry. In addition to its regular two-phase output, it can optionally provide a quadrature two-phase output, both having an output signal frequency equal to one half said input signal frequency.
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公开(公告)号：US20210241014A1
公开(公告)日：2021-08-05
申请号：US16782108
申请日：2020-02-05
Inventor： Michael J. CHOINIERE
Abstract: The system and method for hyperspectral target identification provides for sue of a sensor array such that for a 2 by 2 pixel, each pixel is set to a different wavelength by employing a band pass filter, so that one can determine whether a cluster set is of a natural object or a man-made object. Using ratios of the collected energy within the partitioned sub-bands one can make near real-time declarations about targets and in some cases, friend or foe determinations.
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公开(公告)号：US20210239430A1
公开(公告)日：2021-08-05
申请号：US16972251
申请日：2019-08-30
Inventor： Paul D. Zemany , Matthew F. Chrobak
Abstract: A sensor determines the spin rate or rotation frequency of a munition body of a guided projectile relative to precision guidance munition assembly. The spin rate is used to determine launch velocity of the guided projectile early in flight before GPS is operationally active. The launch velocity is used to determine whether a corrective maneuver is needed to change the range of the guided projectile. Logic can control the canards on the canard assembly in response to the determination that a corrective maneuver is needed.
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公开(公告)号：US20210231406A1
公开(公告)日：2021-07-29
申请号：US17263941
申请日：2019-08-30
Inventor： Paul D. Zemany , Matthew F. Chrobak
Abstract: A system and method to aid in guidance, navigation and control of a guided projectile including a precision guidance munition assembly is provided. The system and method obtain raw position data during flight of the guided projectile, the raw position data including a plurality of position data points from the guiding sensor for determining positions of the guided projectile, establish a window including a portion of the plurality of position data points, smooth the portion of the plurality of position data points in the window, and determine a reduced noise position estimate of the guided projectile, based, at least in part, on the smoothed portion of the plurality of position data points in the window. The system and method may determine a velocity estimate of the guided projectile and predict an impact point of the guided projectile relative to a target.
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