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公开(公告)号：US20240329597A1
公开(公告)日：2024-10-03
申请号：US18194981
申请日：2023-04-03
Inventor： Michael J. DeWeert , Reid A. Noguchi , Somit S. Mathur
IPC: G03H1/22 , G03H1/00 , G03H1/02 , H04N23/20 , H04N23/61 , H04N23/695 , H04N23/698 , H04N23/90
CPC classification number: G03H1/2249 , G03H1/0005 , G03H1/02 , G03H1/2202 , H04N23/20 , H04N23/61 , H04N23/695 , H04N23/698 , H04N23/90 , G02B5/001 , G03H2001/0033 , G03H2001/0268 , G03H2001/2234 , G03H2001/2284 , G03H2222/12 , G03H2223/55
Abstract: An optical detection system uses high-resolution holographic filters for target detection within a very-large field of view image acquired with a reflector. The holographic filter acts as an optical computer, mixing phase and amplitude information of known targets with light from the scene, automatically enhancing portions of the image that match threat objects or other object of interest. A lens forming a Fourier transform of the entire scene is used, and within that transform, the holographic information of a target or multiple targets is added. By acting as an inverse optical transfer function, the hologram gathers the target information to single point, and removes non-target background. Amplification is done by using a laser-illuminated hologram to create a phase-amplitude filter in a photorefractive material at the transform plane. By mixing the hologram and the scene at the transform plane, the matching is enhanced regardless of target location in the scene.
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公开(公告)号：US20230400282A1
公开(公告)日：2023-12-14
申请号：US17838601
申请日：2022-06-13
Inventor： Matthew F. Kepler , Will R. Grigsby , Eric C. Hoenes , Somit S. Mathur
Abstract: A soft-kill countermeasure system utilizing a confirmation device, which may be radar, to enhance existing countermeasures, and enable new countermeasures to be utilized to combat the ever evolving and increasing sophistication of threats. The threat defeat confirmation may allow for rapid or immediate redirection of the countermeasure system to address additional simultaneous threats. The confirmation device can be mounted on a gimbal head or above a gimbal to take advantage of slewing movement to direct the confirmation signal towards the threat.
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公开(公告)号：US11181346B1
公开(公告)日：2021-11-23
申请号：US16588388
申请日：2019-09-30
Inventor： David A. Barfoot , Will R. Grigsby , Karl P. Herb , Eric C. Hoenes , Somit S. Mathur
Abstract: A soft-kill countermeasure system utilizing a tracking radar to enhance existing countermeasures and enable new countermeasures to be utilized to combat the ever evolving and increasing sophistication of threats. The use of the tracking radar may further allow for immediate threat defeat confirmation which may allow for rapid or immediate redirection of the countermeasure system to address additional simultaneous threats.
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Patent Agency Ranking
公开(公告)号：US10055648B1
公开(公告)日：2018-08-21
申请号：US15130227
申请日：2016-04-15
Inventor： Will R. Grigsby , Eric Louchard , David J. Schorr , Mitchell J. Nord , Joseph McGaughey , Somit S. Mathur
CPC classification number: G06K9/00771 , G06K9/0063 , G06K9/6267 , G06K2209/21
Abstract: Techniques are provided for detection, classification and tracking of surface contacts based on multispectral image data from sensors on maritime assets. An example system may include an anomaly detection circuit configured to detect an object based on anomalies in the variance of pixels of water surface image data. The system may also include an object motion tracking circuit configured to analyze motion of the object relative to water surface waves. The analysis may compensate for motion of the asset and sensors. The system may further include an object classification circuit configured to classify the object as an object of interest, based on the analyzed motion of the object, and as a threat, further based on size estimation, edge detection, surface texture analysis, and volume analysis. The range from the asset to the object may be estimated based on the relation of the object to a detected or estimated horizon line.
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公开(公告)号：US12104881B2
公开(公告)日：2024-10-01
申请号：US17838601
申请日：2022-06-13
Inventor： Matthew F. Kepler , Will R. Grigsby , Eric C. Hoenes , Somit S. Mathur
Abstract: A soft-kill countermeasure system utilizing a confirmation device, which may be radar, to enhance existing countermeasures, and enable new countermeasures to be utilized to combat the ever evolving and increasing sophistication of threats. The threat defeat confirmation may allow for rapid or immediate redirection of the countermeasure system to address additional simultaneous threats. The confirmation device can be mounted on a gimbal head or above a gimbal to take advantage of slewing movement to direct the confirmation signal towards the threat.
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公开(公告)号：US11248879B1
公开(公告)日：2022-02-15
申请号：US16916251
申请日：2020-06-30
Inventor： David A. Barfoot , Jeffrey Easton , Karl P. Herb , Matthew F. Kepler , Somit S. Mathur , Michael W. Shaw
Abstract: A laser mast for attachment to a ground vehicle includes a mast, a rotary stage, a platform, a first laser, and a second laser. The rotary stage is connected to and rotates the mast. The platform is connected to the rotary stage. The first laser is within the mast. The second laser is within the rotary stage or the platform.
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公开(公告)号：US10012531B2
公开(公告)日：2018-07-03
申请号：US15298820
申请日：2016-10-20
Inventor： David J. Schorr , Will R. Grigsby , Somit S. Mathur , Bill Alexander
CPC classification number: G01J1/0266 , G01J1/0295 , G01J1/4228 , G01J1/4257 , G01J1/44 , G01J2001/446 , G08B21/182
Abstract: Techniques are provided for estimating the direction of a laser source under non-uniform illumination conditions such as laser speckle. An example system may include a detector array comprising sensors configured to detect the amplitude of the received laser signal. The sensors are disposed on the array at unique orientation angles relative to each other. The sensor size is selected based on the speckle pattern of the laser signal such that the sensors are small enough to be uniformly illuminated by the laser signal in the presence of speckle. The system also includes an amplitude ratio calculation circuit configured to calculate ratios of the amplitudes between each of two sensors of one or more pairs of sensors. The system further includes an angle of arrival calculation circuit configured to estimate the direction of the source of the laser signal based on the calculated ratios and the orientation angles of the sensors.
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公开(公告)号：US20180113021A1
公开(公告)日：2018-04-26
申请号：US15298820
申请日：2016-10-20
Inventor： David J. Schorr , Will R. Grigsby , Somit S. Mathur , Bill Alexander
CPC classification number: G01J1/0266 , G01J1/0295 , G01J1/4228 , G01J1/4257 , G01J1/44 , G01J2001/446 , G08B21/182
Abstract: Techniques are provided for estimating the direction of a laser source under non-uniform illumination conditions such as laser speckle. An example system may include a detector array comprising sensors configured to detect the amplitude of the received laser signal. The sensors are disposed on the array at unique orientation angles relative to each other. The sensor size is selected based on the speckle pattern of the laser signal such that the sensors are small enough to be uniformly illuminated by the laser signal in the presence of speckle. The system also includes an amplitude ratio calculation circuit configured to calculate ratios of the amplitudes between each of two sensors of one or more pairs of sensors. The system further includes an angle of arrival calculation circuit configured to estimate the direction of the source of the laser signal based on the calculated ratios and the orientation angles of the sensors.
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