公开(公告)号：US11802766B2

公开(公告)日：2023-10-31

申请号：US17909214

申请日：2021-03-03

Applicant: AIRBUS DEFENCE AND SPACE SAS

Inventor： Mehdi Ghezal ,  Emmanuel Giraud

IPC: B64G1/24 ,  G01C11/02 ,  H04N23/68

CPC classification number: G01C11/025 ,  B64G1/244 ,  H04N23/685

Abstract: A method (50) of acquiring images of a terrestrial region Z using a spacecraft (10) in non-geostationary orbit around the Earth (30), the spacecraft includes an observation instrument associated with a ground footprint of length L along the direction of travel, the method includes: a step (51) of observing a portion P1 of the terrestrial region Z, including a step of controlling the attitude of the spacecraft (10) during which the ground footprint is kept stationary during the entirety of the step of observing portion P1, and a step of acquiring an image of portion P1, a step (52) of modifying the pitch attitude of the spacecraft (10) so as to place the ground footprint over a portion P2 of the terrestrial region Z, and a step (53) of observing portion P2 of the terrestrial region.

公开(公告)号：US10532831B2

公开(公告)日：2020-01-14

申请号：US16063694

申请日：2016-12-14

Applicant: AIRBUS DEFENCE AND SPACE SAS

Inventor： Emmanuel Giraud

IPC: B64G1/10 ,  H04B7/185 ,  H04B7/195 ,  H04W84/06

Abstract: A method for acquiring images using a constellation of satellites in non-geosynchronous terrestrial orbit. The satellites include respective devices for inter-satellite communication. An aggregate of work plans intended for various satellites is formed. A ground station transmits the aggregate intended for one satellite. The satellite receiving the aggregate retransmits the aggregate intended for at least one other satellite from the ground station. Each satellite receiving the aggregate from another satellite re-transmits the aggregate intended for at least one other satellite. Each satellite recovers its work plan from the aggregate received.

公开(公告)号：US12126380B2

公开(公告)日：2024-10-22

申请号：US18689687

申请日：2022-09-05

Applicant: AIRBUS DEFENCE AND SPACE SAS

Inventor： Mehdi Ghezal ,  Emmanuel Giraud

IPC: H04B10/118 ,  H04B10/50 ,  H04B10/61

CPC classification number: H04B10/118 ,  H04B10/503 ,  H04B10/6165

Abstract: A method (50) for image acquisition by a spacecraft (10) comprising an observation instrument (20) and a laser transmission module (30), the method includes: acquiring an image of a calibration area referred to as a calibration image, by the observation instrument (S50), obtaining reference data associated with the calibration area (S51), determining a pointing error of a laser line of sight by comparing the calibration image and the reference data (S52), controlling the pointing of the spacecraft by correcting the pointing error, in order to point the laser line of sight towards a laser reception module (S53), and transmitting data to the laser reception module by the laser transmission module (S54).