A system for piloting in immersion a drone, comprising: - a drone provided with imaging means (110, 121, 122) and - a ground station comprising: • virtual reality glasses rendering images taken by means of the imaging means and transmitted from the drone via wireless communication means; • means for detecting the changes of orientation of the head of a user wearing the glasses; as well as • ground graphics processing means (210, 230) adapted to generate the images that are rendered; - means (110, 121, 122, 130, 140) for generating on board the drone a first image called "viewpoint" image and for transmitting this first image to the ground graphics processing means; and - means (151, 130) provided in the drone for modifying the axis of sight of the "viewpoint" image in response to changes of position of the user's head detected by the detection means and transmitted to the drone via the wireless communication means (151,252), the system being characterized in that it further includes: - means (110, 121, 122, 130, 140) for generating on board the drone a second image called "bird's-eye" image, whose field is wider and whose angular definition is lower than those of the "viewpoint" image, and for transmitting this second image to the ground graphics processing means; and in that the ground graphics processing means (210, 230) are adapted to locally generate during a movement of the user's head, by a combination of the current "viewpoint" and "bird's-eye" images (P1, P2) present in the ground station, images to be rendered (P'1-P'2, P"1-P"2) of contours (CO') adjusted as a function of the changes of position detected by the detection means. - a drone provided with imaging means (110, 121, 122) and - a ground station comprising: • virtual reality glasses rendering images taken by means of the imaging means and transmitted from the drone via wireless communication means; • means for detecting the changes of orientation of the head of a user wearing the glasses; as well as • ground graphics processing means (210, 230) adapted to generate the images that are rendered; • virtual reality glasses rendering images taken by means of the imaging means and transmitted from the drone via wireless communication means; • means for detecting the changes of orientation of the head of a user wearing the glasses; as well as • ground graphics processing means (210, 230) adapted to generate the images that are rendered; - means (110, 121, 122, 130, 140) for generating on board the drone a first image called "viewpoint" image and for transmitting this first image to the ground graphics processing means; and - means (151, 130) provided in the drone for modifying the axis of sight of the "viewpoint" image in response to changes of position of the user's head detected by the detection means and transmitted to the drone via the wireless communication means (151,252), the system being characterized in that it further includes: - means (110, 121, 122, 130, 140) for generating on board the drone a second image called "bird's-eye" image, whose field is wider and whose angular definition is lower than those of the "viewpoint" image, and for transmitting this second image to the ground graphics processing means; and in that the ground graphics processing means (210, 230) are adapted to locally generate during a movement of the user's head, by a combination of the current "viewpoint" and "bird's-eye" images (P1, P2) present in the ground station, images to be rendered (P'1-P'2, P"1-P"2) of contours (CO') adjusted as a function of the changes of position detected by the detection means. - means (110, 121, 122, 130, 140) for generating on board the drone a second image called "bird's-eye" image, whose field is wider and whose angular definition is lower than those of the "viewpoint" image, and for transmitting this second image to the ground graphics processing means; and in that the ground graphics processing means (210, 230) are adapted to locally generate during a movement of the user's head, by a combination of the current "viewpoint" and "bird's-eye" images (P1, P2) present in the ground station, images to be rendered (P'1-P'2, P"1-P"2) of contours (CO') adjusted as a function of the changes of position detected by the detection means.