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公开(公告)号：US10371795B2
公开(公告)日：2019-08-06
申请号：US15425675
申请日：2017-02-06
Inventor： James M. Huggett , Kevin S. Bassett
Abstract: A radar warning receiver is disclosed. The radar warning receiver includes an antenna, a signal detection unit, a signal identification unit and an alarm. The antenna collects radio frequency (RF) signals. The signal detection unit is configured to generate a group of frequency and amplitude signals based on the collected RF signals. Specifically, the signal detection unit includes a pair of limiting amplifiers for converting the collected RF signals into corresponding pulsed output signals that track the actual frequency oscillations of the collected RF signals, and a pseudo-random noise generator for injecting noise into one of the limiting amplifiers. Based on the frequency and amplitude signals, the signal identification unit determines whether or not any of the collected RF signals includes a threat signal. The alarm is utilized to present a threat signal to a human operator.
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482.发明授权公开(公告)号：US10345428B1
公开(公告)日：2019-07-09
申请号：US16004001
申请日：2018-06-08
Inventor： Mark W. Oden
Abstract: A computer-implemented method of geolocating a target includes: receiving, from a plurality of sources, a corresponding plurality of angle estimates of the target relative to the respective sources; generating a corresponding plurality of planar renditions of the received angle estimates; selecting a combination of two or more planar renditions whose intersection defines a polygon; in response to multiple such combinations, selecting one having a largest number of planar renditions; and determining a center of the polygon of the selected combination. A computer-implemented method of evaluating geolocation geometry with respect to a target includes: geolocating the target from received sensor data of the target from multiple sources and location data of the sources; generating entries of a covariance matrix from the location data and the geolocation; deriving eigenvalues of the covariance matrix from the generated entries; and comparing the derived eigenvalues to evaluate the geolocation geometry with respect to the target.
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公开(公告)号：US10305407B2
公开(公告)日：2019-05-28
申请号：US14888258
申请日：2015-02-26
Inventor： Robert J. Vovos , Arthur P. Lyons
Abstract: Controllers, method and programs for controlling machines are provided. For example, A method comprises determining a resistance value for a loss compensation resistor, updating at least one control equation based on an equivalent circuit using the resistance value and controlling the machine based on the updated at least one control equation. The resistance value represents a plurality of electro-magnetic losses of a machine. The resistance value can be determined from an inverse resistance value.
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公开(公告)号：US10295402B2
公开(公告)日：2019-05-21
申请号：US14918233
申请日：2015-10-20
Inventor： Michael N. Mercier , Joseph M. Schlupf
Abstract: A method of determining the point source quality of a set of pixels associated with a detected energy signature is discussed that pre-records ideal test point source signatures at various sub-pixel locations and radiant intensities throughout the overall sensor field of view in a focal plane array, determines the sub-pixel location of an observed source, and compares the signature at a pixel of the observed source to the pre-recorded “ideal source” signatures at the determined sub-pixel location. to determine point source correlation.
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485.发明申请公开(公告)号：US20190149112A1
公开(公告)日：2019-05-16
申请号：US16250015
申请日：2019-01-17
Inventor： James J. Komiak , Cheryl V. Liss
Abstract: A monolithic microwave integrate circuit (MMIC) presents as a power amplifier including a 9:1 overlay transformer and artificial low impedance transmission lines. The 9:1 overlay transformer effects the output impedance thereof. The artificial low impedance transmission lines behave as inductors without occupying an amount of space equivalent to that of an inductor having similar properties as the artificial low impedance transmission line.
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Patent Agency Ranking
公开(公告)号：US20190148781A1
公开(公告)日：2019-05-16
申请号：US15812392
申请日：2017-11-14
Inventor： Paul D. Zemany , David J. Herold
Abstract: A battery pack and a method of arranging battery cells therein. The battery pack includes a plurality of battery cells arranged and wired together to produce a suppressed or reduced magnetic field. The battery cells are arranged so that the positive and negative terminals of adjacent cells are alternated. Wiring connecting battery cells in pairs is twisted to minimize the area of the current loops in the battery pack. Wiring between battery cells that are adjacent each other is arranged to carry equal and opposite currents. The alternating terminal pattern and the manner in which the battery pack is wired results in the magnetic dipole moments of adjacent battery cells partially or fully cancelling each other out. The battery pack is suitable for use in Unmanned Aerial Vehicles (UAVs), Unmanned Underwater Vehicles (UUVs) or space-limited applications or devices, and makes it possible to use magnetic sensors in these devices.
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公开(公告)号：US10277247B1
公开(公告)日：2019-04-30
申请号：US15950913
申请日：2018-04-11
Inventor： Peter M. Kingston , Lingji Chen , Eric N. Duchon , Christopher D. Moss
Abstract: A receiver includes: a filter circuit to generate predicted measurements for a set of tracks based on previous kinematic states of the tracks and timing and source data of next compressed measurements associated to the tracks, generate probability data of differences between the predicted measurements and next measurement data, generate the next measurement data using the predicted measurements and quantized differences between the predicted measurements and the next measurement data, and generate next kinematic states of the tracks based on the previous kinematic states, the timing and source data of the next compressed measurements, and the generated measurement data; a quantizer circuit to quantize the probability data into quantization tables and look up the quantized differences from corresponding indices in the quantization tables; and a decoder circuit to decode encoded index data of the next compressed measurements into the corresponding indices in the quantization tables using the quantized probability data.
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公开(公告)号：US10237885B2
公开(公告)日：2019-03-19
申请号：US15582871
申请日：2017-05-01
Inventor： John H Chongoushian
Abstract: A method is disclosed for minimizing latency for high priority messages without sacrificing subnet bandwidth in a wireless, multiple access network such as Link 16. Nodes are able to simultaneously receive messages on at least two subnets, one of which is designated as a low latency (“LL”) subnet that transmits messages immediately on a contention access basis. A message acknowledgement protocol can be implemented and high priority messages that fail due to collisions or other reasons can be retransmitted. Jitter can be used to detect collisions. Embodiments include a plurality of “standard” and/or LL subnets designated for messages of varied urgency. High priority messages can reserve an acknowledgement timeslot for use only by the message recipient. Link 16 embodiments implement CMN-4, whereby the LL subnet is one of four subnets monitored by each node. Link 16 latencies in the LL network can be limited to less than 40 msec.
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公开(公告)号：US10234559B2
公开(公告)日：2019-03-19
申请号：US15340732
申请日：2016-11-01
Inventor： Anupam K. Misra , Andrew N. Acker , Shiv K. Sharma
IPC: G01C3/08 , G01S17/02 , G01S17/89 , G01N33/22 , G01S17/10 , G01S17/88 , G01S7/48 , G01V8/02 , G01N21/64 , G01N21/65 , G01N21/47
Abstract: An apparatus for detecting sea mines is disclosed. The apparatus includes a pulsed laser, a collection optics, a long-pass beam splitter, a short-pass beam splitter, a Laser Imaging, Detection and Ranging (LIDAR) channel imager, a Raman channel imager and a florescence channel imager. After the pulsed laser has sent a laser pulse to an ocean surface, the collection optics collects Rayleigh, Raman and florescence scattering return signals reflected from the ocean surface as a result of the laser pulse laser striking the ocean surface and any objects therein. The long-band beam splitter directs the Rayleigh scattering return signals to the LIDAR channel imager. The short-band beam splitter directs the Raman return signals to the Raman channel imager, and directs the florescence return signals to the florescence channel imager.
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公开(公告)号：US20190045675A1
公开(公告)日：2019-02-07
申请号：US15668017
申请日：2017-08-03
Inventor： Bin Li , Lloyd Brown , Patrick Fleming , Jason F. Ross
Abstract: A system for limiting or diminishing current to unpowered Serializer/Deserializer (SerDes) circuitry is provided. The system comprises receiver input termination circuitry and a cold spare circuitry. The receiver input circuitry comprises a termination resistor and an N-type metal oxide silicon field effect transistor (MOSFET). The cold spare circuitry comprises a first MOSFET and a second MOSFET. When the system is powered on, an input current flows to the receiver input termination circuit to be discharged by the N-type MOSFET which is electrically connected to a ground. When the system is powered off, the input current flows to the cold spare circuitry to discharge the input current. Discharging electrons between the first MOSFET and the second MOSFET depends on the polarity of an accumulated voltage.
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