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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
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.
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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).
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