利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

85 条记录 (耗时 0.018 秒)

    Inertial navigation system and method
    11.
    发明授权
    Inertial navigation system and method 有权

    公开(公告)号：US10132634B2

    公开(公告)日：2018-11-20

    申请号：US14431099

    申请日：2013-09-15

    申请人： Rafael Advanced Defense Systems Ltd.

    发明人： Igal Kadosh ,  Michael Naroditsky ,  Hector Rotstein

    IPC分类号： G01C21/16 ,  G01C19/38

    摘要： The invention relates to an improved Inertial Navigation System (INS), which comprises: (a) an INS unit which comprises (a.1) an IMU which in turn comprises a set of at least three gyros and at least three accelerometers, all mounted on a rotatable stage; and (a.2) an INS algorithm for measuring the behavior of said gyros and said accelerometers during a mission, and calculating a navigation solution based on said measurements; and (b) a north finding determination unit, which comprises: (b.1) one or more from said IMU gyros and one or more from said IMU accelerometers; and (b.2) a north finding algorithm which utilizes measurements from said one or more north finding gyros and one or more north finding accelerometers during an initial conditions stationary state in which the stage is positioned in at least two separate stationary orientations, said north finding algorithm determines a north finding solution which is provided to the INS unit for initializing its said INS algorithm.

    SYSTEM AND METHOD FOR DETECTING A CYBER-ATTACK AT SCADA/ICS MANAGED PLANTS
    12.
    发明申请
    SYSTEM AND METHOD FOR DETECTING A CYBER-ATTACK AT SCADA/ICS MANAGED PLANTS 审中-公开

    公开(公告)号：US20180276375A1

    公开(公告)日：2018-09-27

    申请号：US15989748

    申请日：2018-05-25

    申请人： RAFAEL ADVANCED DEFENSE SYSTEMS LTD.

    发明人： Michael AROV ,  Ronen OCHMAN ,  Moshe COHEN

    IPC分类号： G06F21/55 ,  G05B19/418 ,  G05B19/042 ,  H04L29/06

    CPC分类号： G06F21/552 ,  G05B19/0428 ,  G05B19/4185 ,  G06F21/577 ,  G06F21/85 ,  H04L12/12 ,  H04L63/1416 ,  H04L67/12

    摘要： System for detecting a cyber-attack of a SCADA system managed plant. Each industrial computerized device of the system comprises a processor configured with a data validation module to determine whether data flow outputted from a SCADA-connected controller is authentic, and with an alert issuing mechanism activated following detection that the outputted data flow is indicative of a cyber-attack. The at least one dedicated industrial computerized device is operable to passively monitor in parallel data communicated between each of the controllers and the SCADA system including the outputted data at the nearest points of each of the controllers; seek mismatches between the plant state and the physical operation model; if a mismatch is detected, determine whether the mismatch is indicative of a cyber-attack perpetrated with respect to one of the controllers or an operational malfunction; and upon detecting a cyber- attack, activate the alert issuing mechanism to issue a security alert.

    Method for brightness enhancement and modes manipulation of a multimode optical fiber
    14.
    发明授权
    Method for brightness enhancement and modes manipulation of a multimode optical fiber 有权
    多模光纤的亮度增强和模式操作的方法

    公开(公告)号：US09329416B2

    公开(公告)日：2016-05-03

    申请号：US14404221

    申请日：2013-05-26

    申请人： RAFAEL ADVANCED DEFENSE SYSTEMS LTD.

    发明人： Dan Vadim Regelman ,  Yehonatan Segev ,  Shay Yosub

    IPC分类号： G02F1/035 ,  G02B6/14 ,  G02F1/01 ,  H01S3/067

    CPC分类号： G02F1/035 ,  G02B6/14 ,  G02F1/0115 ,  H01S3/067

    摘要： The invention relates to adaptive optics techniques applied to alter the modal structure of light propagating in an optical fiber. In particular the invention relates to altering the modal structure in a multimode beam propagating in a multimode fiber by lowering the number of higher modes. The method comprises combining a wavefront sensor and/or a power sensor with a phase control actuator and actuator control algorithms, to alter the phase structure of the beam thereby to eliminate higher modes. The corrected beam can be then effectively coupled into a smaller diameter fiber with minimum loss of energy and concentrated to smaller spot sizes limited by diffraction.

    摘要翻译： 本发明涉及应用于改变在光纤中传播的光的模式结构的自适应光学技术。 特别地，本发明涉及通过降低多模光纤的数量来改变在多模光纤中传播的多模光束中的模态结构。 该方法包括将波前传感器和/或功率传感器与相位控制致动器和致动器控制算法组合，以改变波束的相位结构从而消除更高的模式。 然后，校正的光束可以有效地耦合到具有最小能量损失的较小直径的光纤中，并且集中到由衍射限制的较小的光斑尺寸。

    A Compact Single Stage Wideband Power Amplifier
    17.
    发明公开
    A Compact Single Stage Wideband Power Amplifier 审中-公开

    公开(公告)号：US20230387857A1

    公开(公告)日：2023-11-30

    申请号：US17767870

    申请日：2020-10-29

    申请人： RAFAEL ADVANCED DEFENSE SYSTEMS LTD.

    发明人： Samuel JAMESON

    IPC分类号： H03F1/02 ,  H03F3/21 ,  H03F1/56

    CPC分类号： H03F1/0205 ,  H03F3/21 ,  H03F1/565 ,  H03F2200/222 ,  H03F2200/387

    摘要： A power amplifier with improved stability, gain, flatness and return loss and reduced the size, which comprises a two-stage power amplifier in balanced cascode topology that consists of a first common-source stage feeding into a first common-gate stage; a second common-source stage feeding into a second common-gate stage; an input matching network for matching the input impedance of the a two-stage power amplifier to a desired signal source impedance; an output matching network for matching the output impedance of the a two-stage power amplifier to a desired load; a first positive feedback path between the gate of the first common-source stage and the drain of the second common-gate (CG) stage and a second positive feedback path between the gate of the second common-source stage and the drain of the first common-gate (CG) stage; a first negative feedback path between the drain of the first common-gate (CG) stage and the gate of the first common-source stage and a second negative feedback path between the drain of the second common-gate (CG) stage and the gate of the second common-source stage; a first inter-stage matching network between the first common-source (CS) stage and the first common-gate (CG) stage; and a second inter-stage matching network between the second common-source (CS) stage and the second common-gate (CG) stage.

    MULTIPLE COHERENT BEAM COMBINATION SYSTEMS WITH REDUCED NUMBER OF APERTURES
    18.
    发明公开
    MULTIPLE COHERENT BEAM COMBINATION SYSTEMS WITH REDUCED NUMBER OF APERTURES 审中-公开

    公开(公告)号：US20230296908A1

    公开(公告)日：2023-09-21

    申请号：US18024988

    申请日：2021-08-05

    申请人： RAFAEL ADVANCED DEFENSE SYSTEMS LTD.

    发明人： Daniel GOLUBCHIK ,  David SHWA

    IPC分类号： G02B27/14 ,  G02B27/10 ,  G02B23/04 ,  G02B26/08 ,  G02B27/00

    CPC分类号： G02B27/141 ,  G02B27/1013 ,  G02B23/04 ,  G02B26/0833 ,  G02B27/0068

    摘要： A first transceiver has a beam emitter that generates first coherent beams, and first optics that direct the first coherent beams towards a target and collect radiation reflected from the target. A second transceiver has a beam emitter that generates second coherent beams, a detector, and second optics having an aperture. The second optics directs the second coherent beams towards the target via the aperture, collects radiation reflected from the target via the aperture, and guides a first radiation component of the collected radiation, that corresponds to the first coherent beams, to the detector. The detector generates, from the first radiation component, a signal indicative of an intensity of radiation impinging on the target corresponding to the first coherent beams. A control subsystem is associated with the transceivers and modifies at least one parameter of the first transceiver based on the intensity signal.