SHOCK AND THERMAL PROTECTION FOR SMART MUNITIONS

    公开(公告)号:US20240159293A1

    公开(公告)日:2024-05-16

    申请号:US18055693

    申请日:2022-11-15

    CPC classification number: F42B12/207

    Abstract: An isolation assembly for use with a munition includes a housing extending along a central axis and defining a cavity. A shuttle is at least partially within the cavity with an air gap between the shuttle and the housing, where the shuttle is configured to contain one or more electronic components. An isolation assembly in the gap between the shuttle and the housing includes an elastomeric isolator and one or more seals. The isolation assembly retains the shuttle in the cavity with six degrees of freedom.

    Joint denoising and delay estimation for the extraction of pulse-width of signals in RF interference

    公开(公告)号:US11982698B2

    公开(公告)日:2024-05-14

    申请号:US17128825

    申请日:2020-12-21

    Abstract: A feature detection system, the system comprising: at least one processor in operative communication with a signal source, said processor further comprising at least one non-transitory storage medium, wherein at least one non-transitory storage medium contains instructions configured to cause the processor to: apply a joint group sparse denoising and delay estimation approach to a signal received from said signal source; and output statistics regarding the signal, wherein the joint group sparse denoising and delay estimation approach comprises; using the following equation:





    {


    x
    *

    ,

    τ
    *


    }

    =



    argmin

    x
    ,
    τ





    {



    1
    2






    j
    =
    1

    M






    y
    j

    -
    x



    2
    2



    +




    i
    =
    0

    N



    λ
    i




    φ
    i

    (


    D
    i

    l
    i



    x

    )




    }






    where: ϕi are regularization functions; ∥y−x∥22 is a data-fidelity term and, in embodiments, is chosen as the least-square term; li are real numbers; Di are operators, which may be linear filters that can be written in matrix form; λi are regularization parameters; and x*,τ* represent estimates of at least one transmitted pulse and associated delay, and solving the equation for multiple values of ϵ; choosing a vector, x, such that a cost function comprising the data fidelity term and regularization function is minimized; determining the ϵ that corresponds to the x that minimizes the cost function; and calculating the pulse width of the received signal, which corresponds to the desired estimate of the vector, x.

    BATCH PROCESSING SIGNAL ACQUISITION
    323.
    发明公开

    公开(公告)号:US20240142635A1

    公开(公告)日:2024-05-02

    申请号:US17978590

    申请日:2022-11-01

    Inventor: John E. Acheson

    CPC classification number: G01S19/37 G01S19/29 H04B1/709 H04B1/713

    Abstract: Techniques are provided for batch processing signal acquisition. A batch processing signal acquisition system implementing the techniques according to an embodiment includes a recording controller configured to store samples of an input signal to a memory. The input signal is received at a first sampling rate. The system also includes a playback controller configured to read samples from the memory for playback of the input signal at a second sampling rate. The system further includes an acquisition processor configured to detect and locate, in time and frequency, a signal of interest in the playback of the input signal. The system further includes a signal processor configured to process the signal of interest in the playback of the input signal based on the detection and location provided by the acquisition processor.

    MWIR lens system for wide area motion imagery

    公开(公告)号:US11960064B2

    公开(公告)日:2024-04-16

    申请号:US17408537

    申请日:2021-08-23

    CPC classification number: G02B13/14 G02B15/02 G02B26/0816 G02B26/10

    Abstract: A Mid-Wave Infrared (MWIR) objective and relay lens system has an F# of 3.33 and angular field of view of 15.28°. It is deployed, with a focal plane and scanning system, on airborne platforms for wide area motion imagery. It is corrected for monochromatic and chromatic aberrations over of 3.3 to 5.1 micrometers. Effective focal length is 20 inches, and the overall length is 40.70 inches. The lens has, from object to image, two groups of optical elements with a cold shield/aperture stop 6 inches from the image plane. Group 1 acts as an objective lens with a positive power and three elements, Group 2 acts as a relay lens has a positive power and four elements. The lens is made of Germanium and Silicon. It used in a scanning system in a pre-objective configuration where the fast scan mirror is located in front of the lens system.

    NAVIGATION SYSTEM WITH EMBEDDED SOFTWARE DEFINED RADIO

    公开(公告)号:US20240103182A1

    公开(公告)日:2024-03-28

    申请号:US17953512

    申请日:2022-09-27

    CPC classification number: G01S19/37

    Abstract: Techniques are provided for employing an embedded software defined radio (SDR) in a navigation system. A navigation system implementing the techniques according to an embodiment includes a global positioning system (GPS) receiver configured to acquire and track received GPS signals. The system also includes an SDR configured to process received communication signals. The communication signals include timing data. The SDR is further configured to calculate position and navigation data based on a combination of the processed communication signals and the tracked GPS signals provided by the GPS receiver. The system further includes a system timer configured to provide a common time base for use by the GPS receiver and the SDR. The navigation system is implemented in an application specific integrated circuit (ASIC).

    Press on retaining washer for fasteners

    公开(公告)号:US11927212B2

    公开(公告)日:2024-03-12

    申请号:US17710171

    申请日:2022-03-31

    CPC classification number: F16B43/003

    Abstract: A thin film-retaining washer with custom geometry that may further provide for a simple press-on installation while maintaining retention of fasteners during assembly, shipping, handling, and/or use of associated systems. The present retaining hardware is easily manufactured from sheet or film materials with minimal post-processing and may be scaled and optimized for use with multiple size and style of fasteners. Further, the thickness profile of the thin film retaining hardware facilitates lobe spring deflection to further provide secure retention of the associated fasteners.

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