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公开(公告)号:US20240230900A1
公开(公告)日:2024-07-11
申请号:US18090974
申请日:2022-12-29
Inventor: Michael J. DeWeert
CPC classification number: G01S17/18 , G01B11/162 , G01S17/89
Abstract: An interferometry system and method thereof detects movements of the surface of a body of water in response to acoustic waves generated from a sub-surface source interacting with the surface. Movements of the surface of the body of water are viewed over multiple interferometric images that can be pieced together to generate an interferometric movie or video. The interferometric movie or video depicts the movement of the acoustic wave propagating through the viewing area. Once the movement of the acoustic wave propagating through the viewing area is known, then back propagation techniques are employed to determine or triangulate the location of the sub-surface source that generated the acoustic wave.
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公开(公告)号:US20240221113A1
公开(公告)日:2024-07-04
申请号:US18149416
申请日:2023-01-03
Inventor: Bingcai Zhang
IPC: G06T3/40
CPC classification number: G06T3/4053 , G06T3/4046
Abstract: System and methods for generating super resolution images from geospatial images having any number of bands. A super resolution model, which uses deep convolution neural networks (DCNNs), is trained using individual image bands, a large crop size or tile size of 512×512 pixels, and a de-noise algorithm. Applying one or more algorithms to maintain the original color of the image bands improves the quality metrics of the super resolution images as measured by PSNR (peak signal-to-noise ratio) and SSIM (structural similarity index measure) of super resolution images. Further applying one or more algorithms to remove border effects introduced during the disclosed process reduces and/or eliminates seam lines between tiles and enhances the overall accuracy of the super resolution images.
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公开(公告)号:US20240200903A1
公开(公告)日:2024-06-20
申请号:US18080052
申请日:2022-12-13
Inventor: Paul D. Zemany
Abstract: Techniques are provided for guiding a projectile. A methodology implementing the techniques according to an embodiment includes generating a roll command based on a roll angle obtained from a steering map that causes a change in range and cross range of the projectile that results in a ground motion closest to a desired ground motion. The method also includes calculating a remaining maximum maneuver distance for the projectile, over a time period extending from the current time of flight to the end of flight. The calculation is based on integration a series of maximum maneuvers, obtained from the steering map, at time intervals within the time period. The method further includes generating a lift command for the projectile based on: distance between the target location and an impact point prediction (IPP) calculated at the current time of flight; an error estimate of the IPP; and the remaining maximum maneuver distance.
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公开(公告)号:US20240188261A1
公开(公告)日:2024-06-06
申请号:US18073179
申请日:2022-12-01
Inventor: Peter G. Schunemann , Kevin T. Zawilski
CPC classification number: H05K9/0005 , C09D5/006 , C23C16/306 , C23C16/52 , C30B17/00 , C30B29/42 , C30B29/602 , C30B35/002
Abstract: GaAs IR window slabs having largest dimensions that are greater than 8 inches, and preferably greater than 12 inches, are grown using the Horizontal Gradient Freeze (HGF) method. Heat extraction is simplified by using a shallow horizontal boat that is only slightly deeper than the desired window thickness, thereby enabling growth of large slabs while also minimizing material waste and fabrication cost as compared to slicing and shaping thick plates from large, melt-grown boules. Single crystal seeds can be used to optimize the final orientation of the slabs and minimize secondary nucleation, thereby maximizing yield. A conductive doped GaAs layer can be applied to the IR window slab to provide EMI shielding. The temperature gradient during HGF can be between 1° C./cm and 3° C./cm, and the directional solidification can be at a rate of between 0.25 mm/h and 2.5 mm/h.
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公开(公告)号:US20240184015A1
公开(公告)日:2024-06-06
申请号:US18073177
申请日:2022-12-01
Inventor: Peter G. Schunemann , Kevin T. Zawilski
CPC classification number: G02B1/02 , C30B25/18 , C30B29/42 , C30B29/44 , C30B31/06 , H05K9/0081 , H05K9/0094
Abstract: IR window slabs of GaP greater than 4 inches diameter, and of GaAs greater than 8 inches diameter, are grown on a substrate using Hydride Vapor Phase Epitaxy (HVPE), preferably low pressure HVPE (LP-HVPE). Growth rates can be hundreds of microns per hour, comparable to vertical melt growth. GaAs IR windows produced by the disclosed method exhibit lower absorption than crystals grown from vertical melt near 1 micron, due to reduced impurities and reduced growth temperatures that limit the solubility of excess arsenic, and thereby reduce the “EL2” defects that cause high absorption near one micron in conventional GaAs boules. Silicon wafers can be used as HVPE substrates. For GaAs, layers of GaAsP that vary from 0% to 100% As can be applied to the substrate. EMI shielding can be applied by adding a dopant during the final stage of growth to provide a conductive GaAs or GaP layer.
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公开(公告)号:US20240183065A1
公开(公告)日:2024-06-06
申请号:US18073228
申请日:2022-12-01
Inventor: Peter G. Schunemann , Kevin T. Zawilski
CPC classification number: C30B25/186 , C30B29/42 , C30B29/44 , C30B31/06 , C30B33/06
Abstract: A method of growing large GaAs or GaP IR window slabs by HVPE, and in embodiments by LP-HVPE, includes obtaining a plurality of thin, single crystal, epitaxial-quality GaAs or GaP wafers, cleaving the wafers into tiles having ultra-flat, atomically smooth, substantially perpendicular edges, and then butting the tiles together to form an HVPE substrate larger than 4 inches for GaP, and larger than 8 inches or even 12 inches for GaAs. Subsequent HVPE growth causes the individual tiles to fuse by optical bonding into a large “tiled” single crystal wafer, while any defects nucleated at the tile boundaries are healed, causing the tiles to merge with themselves and with the slab with no physical boundaries, and no degradation in optical quality. A dopant such as Si can be added to the epitaxial gases during the final HVPE growth stage to produce EMI shielded GaAs windows.
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公开(公告)号:US20240116631A1
公开(公告)日:2024-04-11
申请号:US18045194
申请日:2022-10-10
Inventor: Christopher E. Kohl , Jeffrey A. Gensler , Parker T. Hyink
Abstract: Various countermeasure dispensing systems (or CMDSs) and method of use are described herein. CMDS may include a dispenser assembly operably engaged with a platform where at least one electrical connection provides electrical communication between the dispenser assembly and a sequencer. CMDS may also include a magazine assembly operably engaged with the dispenser assembly, wherein the magazine assembly comprises a magazine configured to hold at least two countermeasure expendables. CMDS may also include a breechplate assembly operably engaged with the magazine assembly and adapted to dispense the at least two countermeasure expendables. CMDS may also include at least one magazine identification switch (MIS) operably engaged with the magazine assembly and the breechplate assembly. CMDS may also include that the at least one MIS is configured to enable the sequencer and the breechplate assembly to selectively dispense at least one countermeasure expendable from the at least two countermeasure expendables.
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公开(公告)号:US11956162B2
公开(公告)日:2024-04-09
申请号:US18169418
申请日:2023-02-15
Inventor: Matthew J. Sherman , Mark D. Chauvette , Matthew Rasa , Nicholas C. Sherman
IPC: H04L47/72 , H04L7/00 , H04L41/5003 , H04L47/56 , H04W48/16 , H04W72/0446
CPC classification number: H04L47/72 , H04L7/0008 , H04L41/5003 , H04L47/56 , H04W48/16 , H04W72/0446
Abstract: An asynchronous medium access control layer scheduler increases efficiency for directional mesh networks by removing extra overhead in the time slots. The efficiency is increased by dividing time slots into sub-slots to allow for a receiving node to be offset by at least one sub-slot from the transmitting node. This enables the scheduler to more efficiently schedule operations for the nodes so that nodes can be performing other functions rather than waiting to receive a transmission or waiting after transmitting a transmission. The sub-slots may be sized to approximate the transmission propagation time or time of flight delay.
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公开(公告)号:US11899491B1
公开(公告)日:2024-02-13
申请号:US17953992
申请日:2022-09-27
Inventor: Matthew J. Sherman , Mritunjay Sinha , Lawrence Yang
CPC classification number: G06F1/12 , G06F15/7814 , H04J3/0635
Abstract: The system and method generates a pulse or a signal that is transmitted between a central processing unit or processor and an Ethernet integrated circuit card to program a trigger generator in the IC. The pulse is effectively a 1PPS signal that is provided to the IC, which may be in the form a field programmable gate array to enable timing synchronization. The trigger in the IC may also generates an interrupt to the processor so a driver in the CPU is instructed to set the next trigger. For the trigger to be accurately controlled, the control routine is implemented in the driver existing in kernel space rather than user space. A routine or protocol periodically polls the interrupt to determine when the trigger must be reset.
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公开(公告)号:US11867908B2
公开(公告)日:2024-01-09
申请号:US17554603
申请日:2021-12-17
Inventor: R. Daniel McGrath
CPC classification number: G02B27/0172 , G02B30/35 , H04N13/332 , H04N23/80 , H04N23/90 , G02B30/36 , G02B2027/014 , G02B2027/0134 , G02B2027/0138
Abstract: A digital imaging system is provided with direct view of an object, having: an optical element configured to allow visible light to pass therethrough to a user's eye and to redirect light of non-visible wavelengths away from the user's eye; a display disposed between the user's eye and the object; a digital camera mounted outside a field of view of the user's eye and configured to obtaining imaging data from the light of non-visible wavelength; a redirection optic disposed so as to redirect the light of non-visible wavelength to the digital camera; and an image processor configured to process the imaging data from the digital camera and output the data to the display such that an image generated from the imaging data from the digital camera overlays an image produced by the impingement of visible light on the user's eye following the visible light's passing through the optical element.
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