公开(公告)号：US10158999B2

公开(公告)日：2018-12-18

申请号：US15068085

申请日：2016-03-11

Applicant: BAE Systems Information and Electronic Systems Integration Inc.

Inventor： Apurva N. Mody ,  Kenneth Carrigan ,  Jack Chuang ,  Alex Lackpour ,  Matthew J. Sherman ,  Alan M. Rosenwinkel

IPC: H04W16/14 ,  H04L5/00 ,  H04B1/06 ,  H04J13/00 ,  G01S7/02 ,  G01S7/00 ,  H04K3/00

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.

公开(公告)号：US10158431B2

公开(公告)日：2018-12-18

申请号：US15496552

申请日：2017-04-25

Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.

Inventor： John H Chongoushian

IPC: H04B7/14 ,  H04B15/00 ,  H04W24/10

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.

公开(公告)号：US10158416B1

公开(公告)日：2018-12-18

申请号：US15827408

申请日：2017-11-30

Applicant: BAE Systems Information and Electronic Systems Integration Inc.

Inventor： David A Cooper ,  John H Chongoushian ,  Bruce M Eteson ,  Jeffrey P Pincus ,  John A Tranquilli, Jr.

IPC: H04B15/00 ,  H04B7/14 ,  H04W12/02 ,  H04L25/02

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.

公开(公告)号：US10135443B1

公开(公告)日：2018-11-20

申请号：US15668094

申请日：2017-08-03

Applicant: BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC.

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.

公开(公告)号：US10097199B1

公开(公告)日：2018-10-09

申请号：US15893895

申请日：2018-02-12

Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.

Inventor： Lawrence J. Kushner ,  Mark E. Stuenkel ,  Steven E. Turner

IPC: H03M1/66 ,  H03M1/74 ,  G06F9/22 ,  H03F3/45

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.

公开(公告)号：US10057356B2

公开(公告)日：2018-08-21

申请号：US14523172

申请日：2014-10-24

Applicant: BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC.

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.

公开(公告)号：US20180231738A1

公开(公告)日：2018-08-16

申请号：US15374475

申请日：2016-12-09

Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.

Inventor： Philip R. Staver

IPC: G02B7/10 ,  H04N5/232 ,  G02B15/16 ,  G02B27/64 ,  G03B13/34

CPC classification number: G02B7/102 ,  G02B15/02 ,  G02B15/16 ,  G02B27/646 ,  G03B13/34 ,  H04N5/23248 ,  H04N5/23296

Abstract: A zoom lens having unpowered optical elements changeably inserted between conventional powered optical zoom elements enables ultra-fast and mechanically stable stepped changes in zoom state.

公开(公告)号：US10025728B2

公开(公告)日：2018-07-17

申请号：US15022221

申请日：2015-05-19

Applicant: BAE Systems Information and Electronic Systems Integration Inc.

Inventor： Jeffrey B. Canter

IPC: G06F12/14 ,  G06F21/79 ,  G06F3/06

Abstract: A flash memory process and device for encrypting and storing data in a non-volatile flash memory associated with a host system. The device includes a flash memory, an encryption engine, a key store, a SRAM to interface with the host system, and associated control circuitry. When powered on, the device first determines if a valid encryption key is held in the key store. If a valid key is held in the store, a program flag is set when encrypted data in the flash memory is ready to be decrypted by the engine and stored in the SRAM for use by the host system, or when data originating from the host system and stored in the SRAM is ready to be encrypted by the engine and programmed into the flash memory. The device can be embedded in any host system wherein data must be encrypted while at rest in a memory.

公开(公告)号：US10018469B2

公开(公告)日：2018-07-10

申请号：US15187900

申请日：2016-06-21

Applicant: BAE Systems Information and Electronic Systems Integration Inc.

Inventor： Leonid Naimark ,  Yunbin Deng ,  Geoffrey S. Meltzner ,  Yu Zhong

IPC: G01C21/16 ,  G01C22/00 ,  A61B5/11 ,  A61B5/00 ,  G06F17/30 ,  G01S19/10

CPC classification number: G01C21/165 ,  A61B5/0022 ,  A61B5/1112 ,  A61B5/112 ,  A61B5/4836 ,  A61B5/486 ,  A61B5/6804 ,  A61B2562/0219 ,  G01S19/49 ,  G06F16/29 ,  G06F16/9537

Abstract: A method of using signal processing representations from IMU/INS devices to identify terrain types. Using orientation and pace invariant gait dynamics images (GDIs) to identify terrain types. Utilizing signal processing representations from IMU/INS devices to determine relative position in GPS-denied areas. Using orientation and pace invariant gait dynamics images (GDIs) to determine relative position in GPS-denied areas. A method of using signal processing representations from IMU/INS devices to determine absolute position using GDI terrain IDs. A method of using signal processing representations from IMU/INS devices to identity position relative to land classes. Using orientation and pace in variant gait dynamics images (GDIs) to identity position relative to land classes.

公开(公告)号：US09998995B2

公开(公告)日：2018-06-12

申请号：US15272700

申请日：2016-09-22

Applicant: BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC.

Inventor： John H Chongoushian

IPC: H04W52/02 ,  H04W84/18 ,  H04W28/04

CPC classification number: H04W52/0229 ,  H04W28/04 ,  H04W84/18

Abstract: A method for reducing self-interference in a wireless network, such as a Link 16 network, while maintaining simultaneous multiple access takes advantage of the physical proximity of nodes in a localized subnetwork, such as a fighter-to-fighter subnetwork in a flight wing, by actively reducing the transmit powers used for subnet messages between the nodes. Calibration messages such as Precise Participant Location and Identification (PPLI) messages are exchanged between all of the nodes of the localized subnetwork, from which each node determines the identities, transmit powers, noise levels, and SNRs of all of the other nodes. The node then determines a link margin for other nodes, and sets its transmit power to a “safe” level for the subnetwork according to the lowest link margin.