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公开(公告)号：US20180080310A1
公开(公告)日：2018-03-22
申请号：US15823489
申请日：2017-11-27
发明人： Logan D. Sorenson , Shuoqin Wang , David L. Walter , Adour V. Kabakian , Keerti S. Kona , Hung Nguyen , Raviv Perahia , David Chang
IPC分类号： E21B44/00 , E21B47/022 , E21B47/04
CPC分类号： E21B44/005 , E21B41/0092 , E21B47/022 , E21B47/04 , G01C21/16 , G01R33/0206
摘要： Described is a system for estimating a trajectory of a borehole. The system processes signals of sensor streams obtained from an inertial sensor system. Using the set of processed signals, the system determines whether a drill is in a survey mode state or a continuous mode state, and a measured depth of the borehole is determined. A set of survey mode positioning algorithms is applied when the drill is stationary. A set of continuous mode navigation algorithms is applied when the drill is non-stationary. Using at least one Kalman filter, results of the set of survey mode positioning algorithms and the set of continuous mode navigation algorithms are combined. An estimate of a borehole trajectory and corresponding ellipse of uncertainty (EOU) is generated using the combined results.
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2.发明申请REDUCING ANTENNA ARRAY FEED MODULES THROUGH CONTROLLED MUTUAL COUPLING OF A PIXELATED EM SURFACE 有权通过受控互联EM表面的相互耦合来减少天线阵列馈送模块公开(公告)号：US20150236408A1
公开(公告)日：2015-08-20
申请号：US14621907
申请日：2015-02-13
发明人： Keerti S. Kona , James H. Schaffner , Hyok J. Song
CPC分类号： H01Q1/523 , H01Q3/26 , H01Q21/065 , H01Q21/22
摘要： A reconfigurable radio frequency aperture including a substrate, a plurality of reconfigurable patches on the substrate, and a plurality of reconfigurable coupling elements on the substrate, wherein at least one reconfigurable coupling element is coupled between a reconfigurable patch and another reconfigurable patch, and wherein the reconfigurable coupling elements affect the mutual coupling between reconfigurable patches.
摘要翻译： 包括衬底，衬底上的多个可重构贴片以及衬底上的多个可重构耦合元件的可重新配置射频孔，其中至少一个可重新配置的耦合元件耦合在可重新配置的贴片和另一可重新配置的贴片之间，并且其中 可重构耦合元件影响可重新配置的补丁之间的相互耦合。
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公开(公告)号：US10329897B2
公开(公告)日：2019-06-25
申请号：US15881700
申请日：2018-01-26
发明人： Keerti S. Kona , Logan D. Sorenson , Raviv Perahia , Hung Nguyen , David Chang
IPC分类号： E21B47/04 , E21B47/06 , E21B47/18 , E21B47/022
摘要： Described is a system for estimating measured depth of a borehole. The system comprises a drilling fluid pulse telemetry system positioned in a borehole and processors connected with the drilling fluid pulse telemetry system. Time series measures are obtained from an environmental sensor package. Initial estimates of a time delay and path attenuation amplitude are determined. An error for the initial estimates is determined, and iterative minimization of the error is performed until source signal parameters converge, resulting in a least squares estimate of the source signal and the reflected signals. The least squares estimate is used to obtain time delay values, which are then used to continuously generate an estimate of a measured depth of the borehole.
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公开(公告)号：US09972905B2
公开(公告)日：2018-05-15
申请号：US14617361
申请日：2015-02-09
申请人： HRL LABORATORIES LLC
发明人： James H. Schaffner , Hyok J. Song , Keyvan R. Sayyah , Pamela R. Patterson , Jeong-Sun Moon , Alan E. Reamon , Keerti S. Kona , Joseph S. Colburn
CPC分类号： H01Q3/01 , H01Q1/06 , H01Q3/2676 , H01Q3/46 , H01Q9/0407 , H01Q15/0026 , H01Q19/005 , H01Q21/0093 , H01Q21/065
摘要： A reconfigurable electro-magnetic tile includes a laser layer including a plurality of lasers, and a pixelated surface comprising a plurality of metal patches and a plurality of switches, wherein each respective switch of the plurality of switches is in a gap between a first respective metal patch and a second respective metal patch, wherein each respective switch is optically coupled to at least one respective laser of the plurality of lasers, and wherein each switch of the plurality of switches comprises a phase change material.
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公开(公告)号：US20190334234A1
公开(公告)日：2019-10-31
申请号：US15965583
申请日：2018-04-27
摘要： A holographic antenna has plurality of conductive elements arranged in a series of the conductive elements, the series of conductive elements being grouped a number of different groups of said conductive elements, each of conductive elements in each different group of conductive elements being connected via one or more tuning elements to a neighboring conductive element in each the different group of conductive elements, each different group of conductive elements comprising a holographic antenna element of said holographic antenna. A plurality of amplifiers wherein each one of the plurality of amplifiers is connected at one end of each one of the different groups of conductive elements; and a feed system coupling each of said amplifiers to a RF connection of the holographic antenna.
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公开(公告)号：US10811782B2
公开(公告)日：2020-10-20
申请号：US15965583
申请日：2018-04-27
摘要： A holographic antenna has plurality of conductive elements arranged in a series of the conductive elements, the series of conductive elements being grouped a number of different groups of said conductive elements, each of conductive elements in each different group of conductive elements being connected via one or more tuning elements to a neighboring conductive element in each the different group of conductive elements, each different group of conductive elements comprising a holographic antenna element of said holographic antenna. A plurality of amplifiers wherein each one of the plurality of amplifiers is connected at one end of each one of the different groups of conductive elements; and a feed system coupling each of said amplifiers to a RF connection of the holographic antenna.
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公开(公告)号：US10718198B2
公开(公告)日：2020-07-21
申请号：US15823489
申请日：2017-11-27
发明人： Logan D. Sorenson , Shuoqin Wang , David L. Walter , Adour V. Kabakian , Keerti S. Kona , Hung Nguyen , Raviv Perahia , David Chang
摘要： Described is a system for estimating a trajectory of a borehole. The system processes signals of sensor streams obtained from an inertial sensor system. Using the set of processed signals, the system determines whether a drill is in a survey mode state or a continuous mode state, and a measured depth of the borehole is determined. A set of survey mode positioning algorithms is applied when the drill is stationary. A set of continuous mode navigation algorithms is applied when the drill is non-stationary. Using at least one Kalman filter, results of the set of survey mode positioning algorithms and the set of continuous mode navigation algorithms are combined. An estimate of a borehole trajectory and corresponding ellipse of uncertainty (EOU) is generated using the combined results.
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8.发明申请公开(公告)号：US20180274355A1
公开(公告)日：2018-09-27
申请号：US15881700
申请日：2018-01-26
发明人： Keerti S. Kona , Logan D. Sorenson , Raviv Perahia , Hung Nguyen , David Chang
CPC分类号： E21B47/04 , E21B47/02208 , E21B47/06 , E21B47/065 , E21B47/18
摘要： Described is a system for estimating measured depth of a borehole. The system comprises a drilling fluid pulse telemetry system positioned in a borehole and processors connected with the drilling fluid pulse telemetry system. Time series measures are obtained from an environmental sensor package. Initial estimates of a time delay and path attenuation amplitude are determined. An error for the initial estimates is determined, and iterative minimization of the error is performed until source signal parameters converge, resulting in a least squares estimate of the source signal and the reflected signals. The least squares estimate is used to obtain time delay values, which are then used to continuously generate an estimate of a measured depth of the borehole.
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9.发明授权公开(公告)号：US09941584B2
公开(公告)日：2018-04-10
申请号：US14621907
申请日：2015-02-13
发明人： Keerti S. Kona , James H. Schaffner , Hyok J. Song
CPC分类号： H01Q1/523 , H01Q3/26 , H01Q21/065 , H01Q21/22
摘要： A reconfigurable radio frequency aperture including a substrate, a plurality of reconfigurable patches on the substrate, and a plurality of reconfigurable coupling elements on the substrate, wherein at least one reconfigurable coupling element is coupled between a reconfigurable patch and another reconfigurable patch, and wherein the reconfigurable coupling elements affect the mutual coupling between reconfigurable patches.
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公开(公告)号：US20160013549A1
公开(公告)日：2016-01-14
申请号：US14617361
申请日：2015-02-09
申请人： HRL LABORATORIES LLC
发明人： James H. SCHAFFNER , Hyok J. Song , Keyvan R. Sayyah , Pamela R. Patterson , Jeong-Sun Moon , Alan E. Reamon , Keerti S. Kona , Joseph S. Colburn
CPC分类号： H01Q3/01 , H01Q1/06 , H01Q3/2676 , H01Q3/46 , H01Q9/0407 , H01Q15/0026 , H01Q19/005 , H01Q21/0093 , H01Q21/065
摘要： A reconfigurable electro-magnetic tile includes a laser layer including a plurality of lasers, and a pixelated surface comprising a plurality of metal patches and a plurality of switches, wherein each respective switch of the plurality of switches is in a gap between a first respective metal patch and a second respective metal patch, wherein each respective switch is optically coupled to at least one respective laser of the plurality of lasers, and wherein each switch of the plurality of switches comprises a phase change material.
摘要翻译： 可重构电磁瓦片包括包括多个激光器的激光层和包括多个金属贴片和多个开关的像素化表面，其中多个开关中的每个开关处于第一相应金属 贴片和第二相应的金属贴片，其中每个相应的开关光学耦合到所述多个激光器中的至少一个相应的激光器，并且其中所述多个开关中的每个开关包括相变材料。
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