公开(公告)号：US11454702B2

公开(公告)日：2022-09-27

申请号：US17058522

申请日：2019-04-25

申请人： Deutsches Zentrum für Luft—und Raumfahrt e. V.

发明人： Gerhard Krieger ,  Sigurd Huber ,  Patrick Klenk ,  Alberto Moreira ,  Felipe Queiroz De Almeida ,  Jens Reimann ,  Michelangelo Villano ,  Marwan Younis

IPC分类号： G01S7/40 ,  G01S13/90

摘要： A synthetic aperture radar method for remote sensing of the surface of the Earth by means of a radar device on a flying object moving in an azimuth direction above the surface of the Earth, wherein the radar device includes an array of antenna elements for transmitting radar pulses in a transmitting operation and for receiving radar echoes of these radar pulses reflected at the surface of the Earth in a receiving operation. A calibration mode is carried out in which the transmission of the radar pulses in the transmitting operation is carried out with a pulse repetition rate such that only echo signals of a single radar echo are received by all antenna elements of the array at the same point in time in the receiving operation; in the receiving operation, the echo signals are recorded in a plurality of receiving channels, wherein a different antenna element is assigned to a respective receiving channel, and in the respective receiving channel the echo signals received by the assigned antenna element are digitized and directly stored, thereby obtaining digitized radar data; the digitized radar data are further processed to determine a set of calibrated parameters of the radar device for the SAR operating mode for obtaining SAR images.

公开(公告)号：US20210215795A1

公开(公告)日：2021-07-15

申请号：US17058522

申请日：2019-04-25

申请人： Deutsches Zentrum für Luft- und Raumfahrt e. V.

发明人： Gerhard KRIEGER ,  Sigurd HUBER ,  Patrick KLENK ,  Alberto MOREIRA ,  Felipe QUEIROZ DE ALMEIDA ,  Jens REIMANN ,  Michelangelo VILLANO ,  Marwan YOUNIS

IPC分类号： G01S7/40 ,  G01S13/90

摘要： A synthetic aperture radar method for remote sensing of the surface of the Earth by means of a radar device on a flying object moving in an azimuth direction above the surface of the Earth, wherein the radar device includes an array of antenna elements for transmitting radar pulses in a transmitting operation and for receiving radar echoes of these radar pulses reflected at the surface of the Earth in a receiving operation. A calibration mode is carried out in which the transmission of the radar pulses in the transmitting operation is carried out with a pulse repetition rate such that only echo signals of a single radar echo are received by all antenna elements of the array at the same point in time in the receiving operation; in the receiving operation, the echo signals are recorded in a plurality of receiving channels, wherein a different antenna element is assigned to a respective receiving channel, and in the respective receiving channel the echo signals received by the assigned antenna element are digitized and directly stored, thereby obtaining digitized radar data; the digitized radar data are further processed to determine a set of calibrated parameters of the radar device for the SAR operating mode for obtaining SAR images.

公开(公告)号：US09844878B2

公开(公告)日：2017-12-19

申请号：US14434001

申请日：2013-10-07

申请人： DEUTSCHES ZENTRUM FÜR LUFT- UND RAUMFAHRT E. V.

发明人： Sami Haddadin ,  Simon Haddadin

IPC分类号： B25J9/16 ,  G05B19/416 ,  G05B19/4061

CPC分类号： B25J9/1666 ,  B25J9/1676 ,  G05B19/4061 ,  G05B19/416 ,  G05B2219/40198 ,  G05B2219/40202 ,  G05B2219/40418

摘要： A method for controlling a robot device (500) having a movable manipulator and/or effector (400), according to which method a speed and/or direction of movement of the manipulator and/or effector (400) is monitored and adjusted as appropriate, taking into consideration medical parameters for injury and robot dynamics is provided. A robot device (500) for implementing such a method and to a computer program product for executing such a method.