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    METHOD AND APPARATUS FOR ESTIMATING FREQUENCY BAND OF RECEIVED SIGNAL, AND STORAGE MEDIUM STORING INSTRUCTIONS TO PERFORM METHOD FOR ESTIMATING FREQUENCY BAND OF RECEIVED SIGNAL
    1.
    发明申请
    METHOD AND APPARATUS FOR ESTIMATING FREQUENCY BAND OF RECEIVED SIGNAL, AND STORAGE MEDIUM STORING INSTRUCTIONS TO PERFORM METHOD FOR ESTIMATING FREQUENCY BAND OF RECEIVED SIGNAL 有权

    公开(公告)号：US20240421801A1

    公开(公告)日：2024-12-19

    申请号：US18662193

    申请日：2024-05-13

    Applicant: AGENCY FOR DEFENSE DEVELOPMENT

    Inventor： Jung Hoon LEE ,  Seung Ho CHOI ,  Je Il JO

    IPC: H03H17/02

    Abstract: A method for estimating a frequency band of a received signal is proposed. The method may include acquiring the received signal using an antenna, and determining a first signal detection number corresponding to a first wideband filter for passing the received signal among a plurality of wideband filters which are respectively set with a plurality of pre-determined wideband frequencies included in a wideband filter bank. The method may also include determining a second signal detection number corresponding to a second narrowband filter for passing the received signal among a plurality of narrowband filters which are respectively set with a plurality of pre-determined narrowband frequencies included in a narrowband filter bank. The method may further include estimating the frequency band of the received signal based on at least one of the first signal detection number and the second signal detection number.

    APPARATUS AND METHOD FOR BLOCKING NAVIGATION SATELLITE SIGNAL RECEPTION WITH RESPECT TO ILLEGAL UNMANNED AERIAL VEHICLES
    2.
    发明申请
    APPARATUS AND METHOD FOR BLOCKING NAVIGATION SATELLITE SIGNAL RECEPTION WITH RESPECT TO ILLEGAL UNMANNED AERIAL VEHICLES 有权

    公开(公告)号：US20240418863A1

    公开(公告)日：2024-12-19

    申请号：US18718928

    申请日：2022-12-14

    Applicant: AGENCY FOR DEFENSE DEVELOPMENT

    Inventor： Jun O KIM ,  Youngjoong LEE

    IPC: G01S19/01

    Abstract: An apparatus for intercepting navigation satellite signal reception to an illegal unmanned aerial vehicle includes a navigation satellite position identification unit configured to identify a position of a navigation satellite, a plurality of radio wave interference sources distributively arranged, and a radio wave interference source selection unit configured to selectively activate, from among the plurality of radio wave interference sources, a radio wave interference source at a position symmetric to the navigation satellite based on a current position or flight trajectory of an illegal unmanned aerial vehicle to cause an interference signal to emit, wherein the interference signal causes the illegal unmanned aerial vehicle to generate symmetric interference in a direction of the navigation satellite.

    METHOD OF PERFORMING ANTI-JAMMING TECHNIQUES THROUGH ANTENNA BEAM HOPPING IN COMMUNICATION SYSTEMS IMPLEMENTED BY USING PLURALITY OF RELAY AND ELECTRONIC APPARATUS THEREOF
    4.
    发明公开
    METHOD OF PERFORMING ANTI-JAMMING TECHNIQUES THROUGH ANTENNA BEAM HOPPING IN COMMUNICATION SYSTEMS IMPLEMENTED BY USING PLURALITY OF RELAY AND ELECTRONIC APPARATUS THEREOF 审中-公开

    公开(公告)号：US20240348312A1

    公开(公告)日：2024-10-17

    申请号：US18367618

    申请日：2023-09-13

    Applicant: AGENCY FOR DEFENSE DEVELOPMENT

    Inventor： Myung Jin JANG ,  Ju Hyung LEE ,  Jae Won CHOI ,  Chul Hee CHOI ,  Hak Keum SEO ,  Ki Keun KIM ,  Byung Seok WOO

    IPC: H04B7/06 ,  H04B7/195

    CPC classification number: H04B7/06952 ,  H04B7/195

    Abstract: Provided is an electronic apparatus of performing communication through a communication system implemented using a plurality of relays, the electronic apparatus including a beam shaping module that shapes a beam for transmitting and receiving data, an antenna aligned to transmit and receive a beam shaped by the beam shaping module, a transceiver for transmitting and receiving the data in relation to another electronic apparatus through the antenna, and at least one processor configured to determine a beam hopping pattern between the plurality of relays, change a relay, which is used to transmit and receive data in relation to the another electronic apparatus sharing the beam hopping pattern, from a first relay included in the plurality of relays to a second relay included in the plurality of relays based on the beam hopping pattern, and control at least one of the antenna, the beam shaping module and the transceiver to transmit and receive data through the second relay. According to another example embodiment, a method executed through the electronic apparatus may be provided and a computer readable recording medium having instructions for performing the method may also be provided.

    ADAPTIVE RECEIVER FOR HIGH OUTPUT POWER SYSTEM AND TRANSCEIVER INCLUDING THE SAME
    7.
    发明公开
    ADAPTIVE RECEIVER FOR HIGH OUTPUT POWER SYSTEM AND TRANSCEIVER INCLUDING THE SAME 审中-公开

    公开(公告)号：US20240259037A1

    公开(公告)日：2024-08-01

    申请号：US18334413

    申请日：2023-06-14

    Applicant: AGENCY FOR DEFENSE DEVELOPMENT

    Inventor： Ki Chul KIM ,  Kyoungyoul PARK ,  Jihaeng CHO

    IPC: H04B1/04 ,  H03F3/193 ,  H04B1/16 ,  H04B1/48

    CPC classification number: H04B1/0475 ,  H03F3/193 ,  H04B1/16 ,  H04B1/48 ,  H03F2200/294

    Abstract: An adaptive receiver for a high output power system includes a band-pass filter that receives a transmission signal output from a transmitter and outputs a transmission signal for canceling a leakage signal from which noise has been removed, and a leakage signal canceller that includes a first metal layer through which the transmission signal for canceling the leakage signal flows and a second metal layer through which a transmission leakage signal by the transmission signal flows, in which the first metal layer and the second metal layer are disposed adjacent to each other to generate a coupling effect, the transmission leakage signal for canceling the leakage signal flows in a reverse direction to a direction in which the transmission leakage signal flows, and the transmission leakage signal is canceled.

    METHOD OF DETERMINING TOPOGRAPHICAL INTERFERENCE WITH GUIDED MISSILE AND DETERMINATION APPARATUS THEREFOR
    8.
    发明公开
    METHOD OF DETERMINING TOPOGRAPHICAL INTERFERENCE WITH GUIDED MISSILE AND DETERMINATION APPARATUS THEREFOR 审中-公开

    公开(公告)号：US20240247913A1

    公开(公告)日：2024-07-25

    申请号：US18482668

    申请日：2023-10-06

    Applicant: AGENCY FOR DEFENSE DEVELOPMENT

    Inventor： Dai Kyung HYUN ,  Jin Seo PARK ,  Ye Jun KANG

    IPC: F41G7/34

    CPC classification number: F41G7/34

    Abstract: A method of determining topographical interference with a guided missile is proposed. The method may include obtaining a pre-calculated expected trajectory of a guided missile. The method may also include extracting topographic elevations with respect to a topography corresponding to the pre-calculated expected trajectory from stored topographical information. The method may further include determining presence or absence of topographical interference with the guided missile based on bottom trajectory elevation values in the pre-calculated expected trajectory and topographic elevation values corresponding to the bottom trajectory elevation values. The pre-calculated expected trajectory may include top, bottom, left, and right trajectories with respect to a launch direction of the guided missile, calculated based on an error factor for the guided missile, and the error factor includes manufacturing error values with respect to at least one of a weight, center of gravity, a thrust, or a moment of inertia of the guided missile.

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