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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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184.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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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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Patent Agency Ranking
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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公开(公告)号：US10158416B1
公开(公告)日：2018-12-18
申请号：US15827408
申请日：2017-11-30
Inventor： David A Cooper , John H Chongoushian , Bruce M Eteson , Jeffrey P Pincus , John A Tranquilli, Jr.
Abstract: An unattended apparatus and method for isolating and relaying secure communications under adverse circumstances without awareness of encryption keys uses known and/or inferred characteristics of received transmissions to identify, isolate, and retransmit only friendly communications without decryption or re-encryption, and in embodiments also without awareness of applicable TRANSEC algorithms and keys. A channelizer digitizes energy received within a bandwidth of interest, which is then analyzed to detect chip timing, identify and demodulate pulses, and assemble secure messages for retransmission. In embodiments, the retransmissions use the original frequencies and TRANSEC parameters, and/or otherwise adhere to applicable TRANSEC and MSEC constraints so that the relayed messages are accepted by intended recipients. Embodiments provide interoperability with existing secure communications such as Link 16 and CDL. In embodiments relay nodes communicate via an out-of-band transport to determine which link has the best reception and which should retransmit a message.
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公开(公告)号：US10135443B1
公开(公告)日：2018-11-20
申请号：US15668094
申请日：2017-08-03
Inventor： Jason F. Ross
IPC: H03K19/003 , H03K17/0814 , H03K19/177 , H03K19/00 , H03K19/0185
Abstract: An off chip driver circuit includes a bias circuit and a driver sub-cell circuit. The bias circuit and off chip driver sub-cell circuit are in electrical communication with each other. The bias circuit includes two serially aligned diodes which are in an off-state when the driver sub-cell is in a functional mode and which are in an on-state when the driver sub-cell is in a cold spare mode. The arrangement of the diodes enables the off chip driver circuit to handle similar voltage signals in both the functional mode and the cold spare mode.
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公开(公告)号：US10097199B1
公开(公告)日：2018-10-09
申请号：US15893895
申请日：2018-02-12
Inventor： Lawrence J. Kushner , Mark E. Stuenkel , Steven E. Turner
Abstract: A digital to analog converter (DAC) circuit is disclosed which employs isolation providing cascode devices to reduce data dependent signal distortion. A DAC circuit configured according to an embodiment includes a current source associated with each bit of a digital word that is to be converted. Each current source is coupled to a current switch that is controlled by the associated bit. The DAC also includes a cascode device coupled to each of the current switches through a feed line. The DAC further includes a summing junction configured to generate an analog output signal corresponding to the digital word based on a sum of currents provided by the current sources, through the current switches and the feed lines. The cascode devices provide impedance matching and isolation between the feed lines and the summing junction to reduce signal reflections between the current switches and the summing junction to improve conversion performance.
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公开(公告)号：US10057356B2
公开(公告)日：2018-08-21
申请号：US14523172
申请日：2014-10-24
Inventor： Matthew J. Sherman
IPC: G06F15/173 , H04L29/08 , H04L29/06 , H04L12/24
CPC classification number: H04L67/16 , H04L41/0866 , H04L41/0893 , H04L63/20
Abstract: A method and a system of managing a policy managed system that includes a policy managed element. The method restricts the policy managed element so that internal configurations and actions of the policy managed element do not violate any policy rules generated external to the policy managed element. The method also prevents the policy managed element from generating policy that exit the policy managed element. The method, at a policy executive element (PEE) located remote from the policy managed element, restricts internal configurations and actions of the PEE so that the PEE does not violate any policy rules generated external to the PEE. The PEE includes a policy generation point (PGP) that the method allows to generate new policy rules that do not violate any existing policy and provides the new policy rules to the policy managed element.
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