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公开(公告)号：US20190058499A1
公开(公告)日：2019-02-21
申请号：US15677528
申请日：2017-08-15
Inventor： Curtis M. Grens
Abstract: Anti-jamming techniques are provided for RF receivers, such as those that operate in hostile environments. In some embodiments, the techniques are embodied in an anti-jam communications system configured with automatic gain control (AGC) that is complementary. The system includes a first AGC circuit prior to an interference suppression circuit and a second AGC circuit after the interference suppression circuit. The first AGC circuit operates to adjust the power level presented to the interference suppression circuit to facilitate interference cancellation. The second AGC circuit operates to maintain the original power level of the desired communications signal and prevent amplitude errors as the first AGC circuit responds to fluctuations in jammer signal power. The second AGC can be slaved to the first AGC circuit such that the sum of two gain values is held constant, according to some embodiments. In this manner, the first and second AGC circuits provide a complementary-AGC system.
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公开(公告)号：US20190056240A1
公开(公告)日：2019-02-21
申请号：US15677342
申请日：2017-08-15
Inventor： Michael Jay Bear
Abstract: Techniques are provided for self-configuration of a sensor array. A methodology implementing the techniques according to an embodiment includes deploying a number of mobile sensor elements from a base unit to a region of interest. The method also includes transmitting an initial sensor configuration plan from the base unit to the sensor elements. The mobile sensor elements navigate to a calculated location based on the initial sensor configuration plan. Sensor data is collected by each of the elements and transmitted back to the base unit for data integration. The method further includes performing, by the base unit, a response analysis using the integrated sensor data and updating the initial sensor configuration plan based on a metric associated with the response analysis. The method further includes iterating these operations to employ the updated sensor configuration plan. Additional iterations are performed until the metric reaches a selected threshold value.
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公开(公告)号：US10211863B1
公开(公告)日：2019-02-19
申请号：US15677528
申请日：2017-08-15
Inventor： Curtis M. Grens
Abstract: Anti-jamming techniques are provided for RF receivers, such as those that operate in hostile environments. In some embodiments, the techniques are embodied in an anti-jam communications system configured with automatic gain control (AGC) that is complementary. The system includes a first AGC circuit prior to an interference suppression circuit and a second AGC circuit after the interference suppression circuit. The first AGC circuit operates to adjust the power level presented to the interference suppression circuit to facilitate interference cancellation. The second AGC circuit operates to maintain the original power level of the desired communications signal and prevent amplitude errors as the first AGC circuit responds to fluctuations in jammer signal power. The second AGC can be slaved to the first AGC circuit such that the sum of two gain values is held constant, according to some embodiments. In this manner, the first and second AGC circuits provide a complementary-AGC system.
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公开(公告)号：US10193868B2
公开(公告)日：2019-01-29
申请号：US15260726
申请日：2016-09-09
Inventor： Howard B. Reubenstein , Gregory Sullivan , David Wittenberg
Abstract: The system and method for protecting multiple networked enclaves each having one or more insecure machines. The system may include an attack detector as part of a secure node (e.g., SAFE node) proxy. The system may include an attack detector external to the proxy. The proxy may support multiple detectors and its actions may include isolating an insecure machine, cleansing an insecure machine, or tattling on (impugning the reputation of) an insecure machine.
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195.发明授权公开(公告)号：US10193511B2
公开(公告)日：2019-01-29
申请号：US15391930
申请日：2016-12-28
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：US20190020367A1
公开(公告)日：2019-01-17
申请号：US15626688
申请日：2017-06-19
Inventor： ANTHONY J. CRAWFORD , CHRISTOPHER N. PETERS , NATHANIEL J. CONWAY , KURT M. FOLEY , JOHN C. JOSEPH , MASON TREMBLAY , DANIEL W. GLASS
CPC classification number: H04B1/1638 , H03H7/325 , H03H11/04 , H03K9/06 , H04B1/26
Abstract: An apparatus for monitoring radio frequency (RF) signals is disclosed. The apparatus includes an RF splitter, a set of track-and-hold circuits, a set of analog-to-digital circuits (ADC) and a frequency tracking module. The RF splitter splits a set of incoming RF signals into multiple RF signal paths. Each of the track-and-hold circuits, which is clocked at a different frequency than others, samples the incoming RF signals from a respective one of the RF signal paths. Each of the ADCs receives the sampled data from a respective one of the track-and-hold circuits. Each of the ADCs is also clocked at same frequency as a corresponding one of the track-and-hold circuits. The frequency tracking module determines a frequency of the incoming RF signals.
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公开(公告)号：US20190020165A1
公开(公告)日：2019-01-17
申请号：US15962788
申请日：2018-04-25
Inventor： Richard E. Berkenbush , James W. Holley
CPC classification number: H01R43/26 , B25B13/06 , B25B13/28 , B25B13/30 , B25B13/481 , B25B13/5016 , B25B23/142 , B25G1/005
Abstract: A cable connector wrench and method of operation that in one example has a shaft with a pair of asymmetrical jaws at one end and a handle coupled to the other end. The two jaws form an assembly in which the jaws are joined with a pivot. The fixed jaw is attachable to the shaft and the movable jaw is coupled to the fixed jaw. The movable jaw and the fixed jaw cooperate to engage a connector of a cabled assembly wherein the connector wrench is adapted for tightening or loosening the connector of the cabled assembly.
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公开(公告)号：US20190003828A1
公开(公告)日：2019-01-03
申请号：US15781520
申请日：2016-10-31
Inventor： Michael J. Choiniere
CPC classification number: G01B11/272 , G01C3/08 , G03B13/20
Abstract: The system and method of sensor imager and laser alignment. The system utilizes a DLP mirror array with a compact collimator to provide a real time, direct mapping of the laser energy from a LRF onto an imager (e.g., visible, SWIR, LWIR, or the like) by using a back scatter approach. This method eliminates the thermal and vibration/shock optical alignment issues by using a relative measurement approach significantly reducing the size, weight, and cost of the alignment system.
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公开(公告)号：US10158999B2
公开(公告)日：2018-12-18
申请号：US15068085
申请日：2016-03-11
Inventor： Apurva N. Mody , Kenneth Carrigan , Jack Chuang , Alex Lackpour , Matthew J. Sherman , Alan M. Rosenwinkel
Abstract: A spectrum sharing system includes an advanced beacon (e.g. a low latency RF link) as part of an information sharing subsystem. The advanced beacon signal carries radar spectrum transmission schedule in an obfuscated way such as not to reveal the geolocation of the radar. The information sharing subsystem directs nodes, such as cell phones, to share spectrum based on spectrum sharing instructions contained in the advanced beacon. The spectrum sharing system permits out-of-band sharing of spectrum white space, as well as sharing of in-band spectrum gray space.
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公开(公告)号：US10158431B2
公开(公告)日：2018-12-18
申请号：US15496552
申请日：2017-04-25
Inventor： John H Chongoushian
Abstract: A method for mitigating the effect of a localized jamming attack on a secure, tactical wireless network implements a dynamic relay assignment (“DRA”) approach, whereby nodes are dynamically assigned to relay communications to “disadvantaged” nodes that are subject to the attack, the relay nodes being selected based on their communication reliability and their proximity to the disadvantaged nodes. In embodiments, the nodes share with each other performance statistics and, in embodiments, measured local noise levels. In various embodiments, each node provides data to a “strategy optimizer” which then dynamically makes relay assignments. In Link-16 embodiments support for a “DRA” relay mode is added, and the communication protocol is extended to support the required exchange of communication quality and local noise information via PPLI messages.
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