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    SYNTHETIC APERTURE RADAR USING ALTERNATING BEAMS AND ASSOCIATED METHODS
    1.
    发明公开
    SYNTHETIC APERTURE RADAR USING ALTERNATING BEAMS AND ASSOCIATED METHODS 审中-实审

    公开(公告)号：EP4428574A1

    公开(公告)日：2024-09-11

    申请号：EP24156038.2

    申请日：2024-02-06

    申请人： Eagle Technology, LLC

    发明人： LIEB, Donald A. ,  RILEY, Robert ,  TAYLOR, Robert M. ,  SPEED, Kerry T. ,  DURHAM, Timothy E.

    IPC分类号： G01S13/90

    CPC分类号： G01S13/904 ,  G01S13/225

    摘要： A synthetic aperture radar (SAR) (20) for a flight vehicle (10) may include an elongate phased array antenna (22) oriented with a long axis in an elevation direction (30). The elevation direction (30) is normal to a direction of flight (32) of the flight vehicle (10). A transmitter (24) is coupled to the elongate phased array antenna (22), and a receiver (26) is coupled to the elongate phased array antenna (22). A controller (28) is coupled to the transmitter (24) and receiver (26) and is configured to generate temporally alternating sets of receive beams (52, 54) for respective swaths to be used to form a SAR image across a surface (50) below the flight vehicle (10). The same center frequency is used to create consistent SARs for all swaths, allowing for coherent combination between subsequent passes over the same swath.

    SATELLITE PROPULSION SYSTEM INCLUDING COMBUSTION CHAMBER AND ELECTRICAL ARC HEATER AND RELATED METHODS
    2.
    发明公开
    SATELLITE PROPULSION SYSTEM INCLUDING COMBUSTION CHAMBER AND ELECTRICAL ARC HEATER AND RELATED METHODS 审中-实审

    公开(公告)号：EP4417806A1

    公开(公告)日：2024-08-21

    申请号：EP24151829.9

    申请日：2024-01-15

    申请人： Eagle Technology, LLC

    发明人： BAROCELA, Edward ,  MATLACK, Alexandra ,  NI, Marcus

    IPC分类号： F02K9/74 ,  B64G1/40

    CPC分类号： F02K9/74 ,  B64G1/415

    摘要： A hybrid propulsion engine for a satellite that includes a satellite housing and electronics carried by the satellite housing, may include a rechargeable electrical power source carried by the satellite housing. The hybrid propulsion engine may also include a combustible fuel supply carried by the satellite housing, and an engine housing defining a combustion chamber for fuel from the combustible fuel supply. The hybrid propulsion engine may also include an electrical arc heater associated with the combustion chamber and configured to supply additional heat from the rechargeable electrical power source, and an exhaust nozzle downstream from the combustion chamber.