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    Energetic plasticizer comprising eutetic mixture of bis (2,2-dinitropropyl) formal, 2,2-dinitropropyl 2,2-dinitrobutyl formal and bis (2,2-dinitrobutyl) formal, and preparation method thereof
    101.
    发明申请
    Energetic plasticizer comprising eutetic mixture of bis (2,2-dinitropropyl) formal, 2,2-dinitropropyl 2,2-dinitrobutyl formal and bis (2,2-dinitrobutyl) formal, and preparation method thereof 有权
    能量增塑剂包括双（2,2-二硝基丙基）甲醛，2,2-二硝基丙基2,2-二硝基丁基甲醛和双（2,2-二硝基丁基）甲醛的合成混合物及其制备方法

    公开(公告)号：US20010030009A1

    公开(公告)日：2001-10-18

    申请号：US09808379

    申请日：2001-03-14

    Applicant: AGENCY FOR DEFENSE DEVELOPMENT

    Inventor： Jin Rai Cho ,  Jin Seuk Kim ,  Keun Deuk Lee ,  Young Gu Cheun ,  Bang Sam Park

    IPC: C06B025/00

    CPC classification number: C06B45/105

    Abstract: An energetic plascitizer comprising bis(2,2-dinitropropyl) formal, 2,2-dinitropropyl 2,2-dinitrobutyl formal and bis 2,2-dinitrobutyl) formal in a molar ratio of 20null68%/28null50%/4null30% is, described. It is also provided a method for synthesizing the plasticizer comprising: dissolving 2,2-dinitropropanol and 2,2-dinitrobutanol into an organic solvent to form an organic solution, in which the molar ratio of 2,2-dinitropropanol to 2,2-dinitrobutanol is 3:1-6:1; adding to the organic solution a sulfuric acid solution where formaldehyde source was dissolved, wherein the temperature of reaction medium is maintained below 20null C.; and separating and purifying the product from the reaction mixture. The plascitizer according to the present invention has an excellent thermal and chemical properties while incurring a low production cost. Especially, the energy content of the plasticizer of the present invention is heightened by minimizing the content of the diformal generated as a side product, so that it is favorably adapted for use in an insensitive high performance explosive and a propellant.

    Abstract translation: 含有摩尔比为20〜68％/ 28〜50％/ 4的双（2,2-二硝基丙基）甲醛，2,2-二硝基丙基2,2-二硝基丁基甲醛和2,2-二（2,2-二硝基丁基） 〜30％是描述的。 还提供了一种合成增塑剂的方法，其包括：将2,2-二硝基丙醇和2,2-二硝基丁醇溶解在有机溶剂中以形成有机溶液，其中2,2-二硝基丙醇与2,2-二硝基丙醇的摩尔比为 二硝基丁醇为3：1-6：1; 向有机溶液中加入溶解有甲醛源的硫酸溶液，其中反应介质的温度保持在20℃以下。 并从反应混合物中分离和纯化产物。 根据本发明的排气装置具有优异的热和化学性质，同时导致低的生产成本。 特别地，通过最小化作为副产物产生的异常的含量来提高本发明的增塑剂的能量含量，从而有利地适用于不敏感的高性能炸药和推进剂。

    ERROR CORRECTION METHOD FOR ACTIVE ELECTRONICALLY SCANNED ARRAY RADAR SYSTEM
    102.
    发明申请
    ERROR CORRECTION METHOD FOR ACTIVE ELECTRONICALLY SCANNED ARRAY RADAR SYSTEM 有权

    公开(公告)号：US20250155564A1

    公开(公告)日：2025-05-15

    申请号：US18914245

    申请日：2024-10-13

    Applicant: AGENCY FOR DEFENSE DEVELOPMENT

    Inventor： Hyuksoo SHIN ,  Jeonghun HWANG ,  Yongjun HONG ,  Byunglae CHO

    IPC: G01S13/42 ,  G01S7/40

    Abstract: An error correction method for an active electronically scanned array (AESA) radar system including a user interface, a processor, and a memory includes receiving, by the user interface, a user input for a target steering angle, determining, by the processor, a first input angle according to the user input, extracting, by the processor, a first measured angle corresponding to the first input angle from a radome angle table stored in the memory, calculating, by the processor, a first error by comparing the target steering angle with the first measured angle, comparing, by the processor, the first error with a predetermined threshold value, determining, by the processor, the first input angle as a correction angle when the first error is less than the predetermined threshold value, and generating, by the processor, for an AESA radar, a beam steering command including the correction angle.

    JAMMING SIGNAL GENERATION METHOD AND SYSTEM
    103.
    发明申请
    JAMMING SIGNAL GENERATION METHOD AND SYSTEM 有权

    公开(公告)号：US20250125897A1

    公开(公告)日：2025-04-17

    申请号：US18884119

    申请日：2024-09-13

    Applicant: AGENCY FOR DEFENSE DEVELOPMENT

    Inventor： Haemin LEE ,  Kiwan KIM

    IPC: H04K3/00 ,  G01S13/90

    Abstract: Provided are a jamming signal generation method and system. The method includes receiving a synthetic aperture radar (SAR) transmission signal by an SAR, determining a first form and position of a noise patch in a predefined coordinate system, transforming the predefined coordinate system into an SAR image formation plane (IFP) coordinate system, based on a coordinate system transformation function, determining a second form and position transformed from the first form and position of the noise patch in an SAR image using the SAR IFP coordinate system, generating a first reflectivity map model, based on the second form and position of the noise patch, generating a second reflectivity map model by performing two-dimensional fast Fourier transformation on the first reflectivity map model, and generating an SAR jamming signal based on a convolutional product of the second reflectivity map model and a reference signal.

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