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    Method and apparatus for improving resolutions of analog-to-digital converters
    173.
    发明授权
    Method and apparatus for improving resolutions of analog-to-digital converters 有权

    公开(公告)号：US10425096B1

    公开(公告)日：2019-09-24

    申请号：US15981210

    申请日：2018-05-16

    Applicant: BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC.

    Inventor： David A. Haessig, Jr. ,  Amod V. Dandawate ,  David C. Donarski ,  Dale A. Rickard ,  Forrest C. Vatter

    IPC: H03M1/00 ,  H03M1/20 ,  H03M1/12

    Abstract: An apparatus having an analog-to-digital converter with an increased effective resolution is disclosed. The apparatus includes a signal processing functional block and an analog-to-digital conversion block. The signal processing functional block includes a controller for providing a set of digital control signals according to a set of digital input signals received by the controller, a digital-to-analog converter for converting the digital control signals to a set of corresponding analog control signals, and a physical hardware unit for performing a specific function according to the analog control signals. The analog-to-digital conversion block includes an adder for adding a dither signal to an analog feedback signal originated from the physical hardware unit, an ADC for converting sums of dither signals and analog feedback signals to a set of oversampled digital control signals to be fed into the controller.

    Method for improving target location accuracy in a direction finding system
    174.
    发明授权
    Method for improving target location accuracy in a direction finding system 有权

    公开(公告)号：US10422644B2

    公开(公告)日：2019-09-24

    申请号：US15808246

    申请日：2017-11-09

    Applicant: BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC.

    Inventor： Richard E. Clymer ,  Jeffrey A. Paul ,  Dean C. Slocum

    IPC: G01C21/20 ,  G01S5/02

    Abstract: A method for improving target location accuracy in direction finding systems is disclosed. A target search region is identified based on a set of received signals, and the target search region is projected onto the earth's surface. An initial search grid, which is smaller than the target search region, is placed within the target search region. Next, the initial search grid is expanded to a full search grid by using an optimum number of virtual grid points in order to cover the entire target search region. The correlation coefficients at the virtual grid points between the estimated phases of emitted signals and the estimated phases of the received signals are then calculated. A target is designated as being at a location associated with the highest correlation coefficient. At this point, a new travel path can be initiated to engage or avoid the target.

    Mixer driver circuit with improved slew rate
    176.
    发明授权
    Mixer driver circuit with improved slew rate 有权

    公开(公告)号：US10374552B1

    公开(公告)日：2019-08-06

    申请号：US15952868

    申请日：2018-04-13

    Applicant: BAE Systems Information and Electronic Systems Integration Inc.

    Inventor： Douglas S. Jansen

    IPC: H03D7/14 ,  H01L27/06 ,  H04B1/16 ,  H01L21/8249 ,  H01L29/737

    Abstract: A mixer device is disclosed, which is fabricated as a bipolar-complementary metal oxide semiconductor (BiCMOS) integrated circuit device, to provide improved linearity and dynamic range, at higher operating frequencies. A mixer device configured according to an embodiment includes a driver circuit comprising bipolar junction transistors (BJTs) to convert a local oscillator signal to a high slew-rate gate drive signal. The driver circuit is configured as a quasi-complementary driver employing NPN BJTs. The mixer device further includes a mixer circuit comprising CMOS field-effect transistors (FETs) configured to mix an input signal with the gate drive signal to generate an output signal through the application of the gate drive signal to the gate port of the CMOS FETs. The mixer device further includes a voltage biasing circuit to provide a biased body voltage to the FETs to allow overdriving to a negative voltage relative to the body voltage.

    Mid body seeker payload
    177.
    发明授权
    Mid body seeker payload 有权

    公开(公告)号：US10345087B2

    公开(公告)日：2019-07-09

    申请号：US15665656

    申请日：2017-08-01

    Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.

    Inventor： Michael J. Choiniere ,  Jason H. Batchelder ,  Peter J. Evans ,  Gregory R. Hallerman

    IPC: F42B15/08 ,  F42B15/01 ,  F42B10/14 ,  F42B15/10 ,  F42B15/00 ,  F42B10/00

    Abstract: A mid-body which a cylindrical housing which defines a longitudinal axis and has an interior compartment. A guidance controller is housed within the mid-body for controlling flight. A plurality of wings are connected to the housing and each of the wings is movable into a deployed position to provide guidance during flight. The mid-body has an access window which facilitates communication between the interior compartment of the housing and an external environment. A normally door covers the access window, but when the door is moved, relative to the access window, into an open position, communication between the interior compartment and the external environment is established. An optical sensor is accommodated within the interior compartment and the optical sensor, once the door is moved relative to the access window, can view the external environment and supply data to the guidance controller for controlling operation of the plurality of wings during flight.

    Techniques for implementing a portable spectrum analyzer
    180.
    发明授权
    Techniques for implementing a portable spectrum analyzer 有权

    公开(公告)号：US10313164B2

    公开(公告)日：2019-06-04

    申请号：US15588256

    申请日：2017-05-05

    Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.

    Inventor： Apurva N. Mody ,  Jack Chuang ,  Ronald Lawrence ,  Chad M. Spooner

    IPC: H04B3/00 ,  H04L27/00 ,  H04B17/391 ,  G01R23/16 ,  H04M1/725 ,  H04M1/18 ,  H04W52/50

    Abstract: Techniques are provided for implementing a portable spectrum analyzer. An example system, according to an embodiment, includes a signal analyzer including an RF receiver to receive RF signals from an antenna, an analog-to-digital converter to generate a sampled signal based on the received RF signals, and a signal analysis co-processor to perform cognitive scanning analysis of the sampled signal. The cognitive scanning analysis includes detection, identification, and characterization of digital/analog signal(s) embedded in the sampled signal. The system may further include a communications interface circuit to provide communication between the signal analyzer and an associated mobile host platform (e.g., smartphone). The communication includes transmitting results of the cognitive scanning analysis to the mobile host and receiving parameters from the mobile host to control the operation of the cognitive scanning analysis. The signal analyzer and mobile host are coupled through a shared enclosure such as a hinged case, sleeve, or wallet.

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