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41.发明公开公开(公告)号：US20230366646A1
公开(公告)日：2023-11-16
申请号：US18029874
申请日：2022-04-12
Applicant: AGENCY FOR DEFENSE DEVELOPMENT
Inventor： Bo-Seong KIM , Seung-Jae LEE , Kwan-Jin PARK
Abstract: The present invention provides a system for autonomously conveying and loading a shell into a fixed gun, the system including an autonomous conveyance device configured to autonomously travel and move according to an autonomous driving program from a shell storage location to a fixed gun fixed to a gun mount that is a destination, an automatic loading device configured to hold a testing shell and automatically load the testing shell into a cartridge chamber of the fixed gun, and a shell lifting device mounted on an upper surface of the autonomous conveyance device and a lower surface of the automatic loading device and configured to move the automatic loading device upward or downward. According to the present invention, a process of conveying and loading the shell into the testing fixed gun may be autonomously performed in an unmanned manner.
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公开(公告)号：US11808795B2
公开(公告)日：2023-11-07
申请号：US17572133
申请日：2022-01-10
Applicant: AGENCY FOR DEFENSE DEVELOPMENT
Inventor： Tae Yeob Kang , Donghwan Seo
IPC: G01R23/02
CPC classification number: G01R23/02
Abstract: Disclosed are a method and an apparatus for improving circuit health. The method includes obtaining an S-parameter plot of a circuit having an input port and an output port; determining a resonance frequency of the circuit based on the S-parameter plot; and estimating the health of the circuit based on the resonance frequency.
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公开(公告)号：US20230348032A1
公开(公告)日：2023-11-02
申请号：US18127023
申请日：2023-03-28
Applicant: AGENCY FOR DEFENSE DEVELOPMENT
Inventor： Seong-Hwan BAE , Seok-Jin OH , Jun-Young HEO , Ji-Su YOON , Seon-Uk HEO
IPC: B63G8/08
CPC classification number: B63G8/08
Abstract: The present invention relates to a seawater flow control device for a uniform motion, and more particularly, to a seawater flow control device for a uniform motion, which controls a velocity of a propulsion system by adjusting a combustion reaction between seawater and a propellant by adjusting a seawater flow rate depending on the number of operating seawater discharge holes. According to the present invention, it is possible to control the velocity of the propulsion system by increasing the amount of seawater when the velocity of the propulsion system is low and decreasing the amount of seawater when the velocity of the propulsion system is high, thereby implementing a uniform motion of the propulsion system.
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公开(公告)号：US11784299B2
公开(公告)日：2023-10-10
申请号：US17053011
申请日：2019-10-14
Applicant: AGENCY FOR DEFENSE DEVELOPMENT
Inventor： Yu Song Choi , Tae Young Ahn , Jang Hyeon Cho
Abstract: A lithium anode of a thermal battery may include a metal alloy foam in which a plurality of pores is formed and including nickel (Ni), iron (Fe), chromium (Cr), and aluminum (Al) mixed in a predetermined composition ratio, and lithium impregnated into the metal alloy foam in a molten state and accommodated in the pores, wherein the chromium in the composition ratio may facilitate the impregnation of the lithium into the pores and reduce the reactivity of the metal alloy foam to the lithium at an operating temperature of the thermal battery, and the aluminum in the composition ratio may facilitate the impregnation of the lithium into the pores and prevent the lithium from penetrating into a surface of the metal alloy foam.
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45.发明公开公开(公告)号：US20230314606A1
公开(公告)日：2023-10-05
申请号：US18002240
申请日：2021-07-13
Applicant: AGENCY FOR DEFENSE DEVELOPMENT
Inventor： Yonggi JO , Suyong LEE , Sangkyung LEE , Yongsup IHN , Zaeill KIM
CPC classification number: G01S17/04 , G01S17/006 , G01S7/4816
Abstract: The objective of the present invention is to provide a quantum receiver using square of homodyne detection for detecting a target of a quantum radar by using the square of homodyne detection that uses homodyne detection used in quantum information processing using continuous variables, and data processing, and a measurement method therefore. In order to achieve the above objective, the quantum receiver for detecting a target of a quantum radar using the square of homodyne detection according to the present invention comprises: a first 50:50 beam splitter for mixing signals coming into an input terminal; and two light quantity measurement units for measuring the quantity of light respectively outputted to two output terminals of the first 50:50 beam splitter.
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Patent Agency Ranking
公开(公告)号：US11764757B2
公开(公告)日：2023-09-19
申请号：US17171757
申请日：2021-02-09
Applicant: AGENCY FOR DEFENSE DEVELOPMENT
Inventor： Yeonsoo Jang , Jintae Park , Beomjun Park , Insun Kim , Ghiback Kim
IPC: H03H17/02
CPC classification number: H03H17/0213 , H03H17/0266
Abstract: This application relates to a signal filtering device. The device includes a memory and a processor. The processor may generate one or more matrices based on a size of a digital filter bank that generates an output signal by dividing an input signal into a plurality of channels and store in the memory each of the generated one or more matrices to which a plurality of digital filter bank coefficients or a plurality of input signals are assigned. The processor may also partially calculate the stored plurality of digital filter bank coefficients and the plurality of signals based on a number of at least some of the plurality of channels, and calculate the calculated digital filter bank coefficients and signals. The processor may further perform a discrete Fourier transform (DFT) on the calculated signal and compensate for a phase of the discrete Fourier transformed signal according to a preset reference.
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公开(公告)号：US11749908B2
公开(公告)日：2023-09-05
申请号：US17686961
申请日：2022-03-04
Applicant: AGENCY FOR DEFENSE DEVELOPMENT
Inventor： SeYoung Kang , Won Zoo Chung , SeonKyo Kim , CheolSun Park
Abstract: This application relates to a method for designing a non-uniformly spaced linear array antenna. The method includes setting a cost function for spacing between a plurality of antennas comprised in a linear array and for weights for each of the antennas, with limits on side lobe level and bandwidth, and obtaining an initial best solution vector for the cost function under an initial environmental condition based on learning parameters. The method may further include updating the initial best solution vector through reinforcement learning in which a reward value is computed by comparing a sub best solution vector with each of a plurality of solution vectors for the cost function under a sub environmental condition based on the initial best solution vector. The method may further include determining the spacing between the plurality of antennas and the weights for each of the antennas based on the updated initial best solution vector.
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公开(公告)号：US20230272131A1
公开(公告)日：2023-08-31
申请号：US17849485
申请日：2022-06-24
Applicant: AGENCY FOR DEFENSE DEVELOPMENT
Inventor： Byoung Sun MIN , Jin Hyuk LEE , Hong Min SHIM , Sungjune KIM , Minhye LEE
IPC: C08F136/14
CPC classification number: C08F136/14
Abstract: Provided are a modified conjugated diene-based polymer comprising a conjugated diene-based monomer-derived repeating unit; and a chain extender-derived part which is linked to both terminals of the conjugated diene based monomer-derived repeating unit, respectively, includes one or more urethane groups in a molecular chain, and has different functional groups at both terminals, wherein one of the functional groups is an alkyne group, wherein a terminal of the chain extender-derived part which is not linked to both terminals of the conjugated diene based monomer-derived repeating unit is an alkyne group, a manufacturing method thereof, a binder composition for a solid propellant comprising the same, a modified conjugated diene based binder for a solid propellant, and a manufacturing method thereof.
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公开(公告)号：US11670831B2
公开(公告)日：2023-06-06
申请号：US17407038
申请日：2021-08-19
Applicant: AGENCY FOR DEFENSE DEVELOPMENT
Inventor： Kichul Kim , Young Dam Kim , Taehwan Joo , Chanho Hwang , Jaesoo Jung , Gilsoo Jung , Daehoon Gwon
Abstract: An ultra-high frequency power combiner according to the disclosure includes a first input line connected to a first input port, a second input line connected to a second input port, an output line connected to an output port, a first transmission line between the first input line and the output line, a second transmission line between the second input line and the output line, a first series capacitor, a resistor, and a second series capacitor connected in series between a first node between the first input line and the first transmission line and a second node between the second input line and the second transmission line, and a first parallel capacitor, an inductor, and a second parallel capacitor connected in parallel with the resistor and connected in series with one another.
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公开(公告)号：US20230170624A1
公开(公告)日：2023-06-01
申请号：US17827983
申请日：2022-05-30
Applicant: AGENCY FOR DEFENSE DEVELOPMENT
Inventor： Jin-Woo PARK , Jung-Kun SONG , Eun-Kyung JUN , Ki-Soo LEE , Jae-Ho CHOI , Da-Hyun LIM , Won-Jun CHOI
IPC: H01Q17/00
CPC classification number: H01Q17/008
Abstract: The present invention relates to a mechanical meta-material based electromagnetic wave absorber, wherein a shape of the electromagnetic wave absorber is any one of a kelvin-foam, an octet-truss, a body-centered cubic lattice, a simple cubic triply minimal surface (SC-TPMS), and a cubic cellular core (CCC) and a honeycomb, a dielectric loss of the electromagnetic wave absorber is controlled by changing a strut diameter of a unit cell including at least one of carbon black, carbon nanotube, carbon fiber and graphene constituting the electromagnetic wave absorber.
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