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公开(公告)号：US20230124039A1
公开(公告)日：2023-04-20
申请号：US17786603
申请日：2020-12-21
发明人： Jackson McCormick , Morris Cohen
摘要： An embodiment of the disclosure provides a method of generating an electron density map of a D-region of the ionsphere. The method can comprise: defining a plurality of grid pixels corresponding to a portion of the D-region of the ionosphere; receiving a plurality of electromagnetic signals, each of the plurality of electromagnetic signals having propagated along a distinct propagation path through a portion of the D-region corresponding to one or more of the plurality of grid pixels; clustering the plurality of electromagnetic signals based on similarities in a point-of-origin of the plurality of electromagnetic signals; determining a path-averaged electron density curve for each of the plurality of clustered signals; determining a basis representation of an electron density curve of the plurality of grid pixels, which is consistent with the path-averaged electron density curves; and generating, based on the as is representation, an electron density map for the D-region of the ionosphere.
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公开(公告)号：US10601125B2
公开(公告)日：2020-03-24
申请号：US15327295
申请日：2015-07-23
发明人： Morris Cohen
摘要： Various methods, apparatus, devices and systems are provided for electrically short antennas for efficient broadband transmission. In one example, among others, a system includes a segmentally time-variant antenna and a segment controller that can control conductivity of individual segments of the segmentally time-variant antenna. The conductivity of the individual segments is modulated to allow a pulse to propagate from the proximal end to the distal end of the segmentally time-variant antenna and impede a reflection of the pulse from propagating back to the proximal end of the segmentally time-variant antenna. In another embodiment, a method includes injecting a pulse at a first end of a segmentally time-variant antenna and modulating conductivity of individual segments to allow the pulse to propagate to a second end of the segmentally time-variant antenna and impede a reflection of the pulse from propagating back to the first end.
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公开(公告)号：US20240361387A1
公开(公告)日：2024-10-31
申请号：US18649510
申请日：2024-04-29
发明人： Ning Guo , Abdul Raheem Beyah , Morris Cohen , Lukas Graber , Roderick Gray , Samuel Neall , Kevin Whitmore
IPC分类号： G01R31/327 , G01R35/00
CPC分类号： G01R31/3274 , G01R31/3275 , G01R35/005
摘要： An example method of estimating an arc duration in a circuit breaker includes receiving a first measurement corresponding to a low-frequency electric field emitted from a vacuum circuit breaker during an interruption or circuit break operation and a second measurement corresponding to a low-frequency magnetic field, vibration, or acoustic emitted by the vacuum circuit breaker during operation, aligning the first measurement and the second measurement in time, wherein the first measurement is calibrated according to a first physical constant and wherein the second measurement is calibrated according to a second physical constant; and determining, by a sensor-fusion algorithm or a trained AI model, an estimated duration value of an arc duration using the time-aligned first measurement and second measurement, wherein the arc duration corresponds to a first time corresponding to a separation of contacts of the vacuum circuit breaker and a second time corresponding to arc extinction.
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