Abstract: A plate folding and unfolding device and a solar panel structure are provided. The plate folding and unfolding device includes a cam fixed with first plate piece, and a rotating shaft is disposed inside the cam in an axial direction of the cam; a connecting rod, where the connecting rod includes a first end and a second end that are opposite to each other, the first end is connected vertically to the rotating shaft, and the second end is fixed to a second plate piece; a positioning shaft, where the positioning shaft is disposed, on the connecting rod; and an elastic piece, where the elastic piece is disposed on the connecting rod, one end of the elastic piece is connected to the positioning shaft, where a groove that accommodates the positioning shaft is disposed at at least one location of the outer peripheral surface of the cam.

Abstract: A near space aircraft pod, including a pod body and a covering piece, where a heat dissipation part is disposed on the pod body for dissipating heat inside the pod body; and the covering piece is connected to the outside of the pod body in a movable manner, for covering the heat dissipation part or keeping a pre-designed distance from the heat dissipation part. According to the near space aircraft pod provided in the embodiments, the covering piece can adjust a distance from the heat dissipation part in time or cover the heat dissipation part based on a temperature change. Therefore, a heat dissipation speed of the pod can be effectively controlled, so that temperature inside the pod is kept in a proper range, and it is ensured that electronic devices in the pod operate under a good temperature environment.

Abstract: The present disclosure relates to the aerospace application field, and provides a method for flying a large balloon. In the method, a constraint apparatus is disposed on a balloon capsule to replace a roller, and the constraint apparatus is released progressively in a release process of the balloon capsule, so that the balloon capsule is released progressively and slowly before rising above a pod. This greatly reduces the impact in a flying process, makes it easier to control a flying status of the balloon capsule, and also makes related operations of onsite staffs simpler and controllable.

Abstract: The present invention provides a scanning method of a photoelectric remote sensing system including the following steps: providing a photoelectric remote sensing system that is suspended in the air; and S20, driving the photographing device by the pan-tilt device to scan a target area along a plurality of circular trajectories, driving the photographing device by the pan-tilt device to switch between the circular trajectories, so as to enable a scanning area of the photographing device to cover the entire target area; and adjusting an optical parameter of the photographing device while the photographing device is switched between the circular trajectories, so as to enable pictures photographed at all scanning points to have the same spatial resolution. The scanning method of the present invention can ensure that the scanning area fully covers a target area and pictures photographed at different target points have the same spatial resolution.

Abstract: The present invention discloses a positioning method and apparatus. The method includes: acquiring a first image captured by an optical device, where the first image includes an observation object and a plurality of predetermined objects, and the predetermined objects are objects with known geographic coordinates; selecting a first predetermined object from the predetermined objects based on the first image; acquiring a second image, where the first predetermined object is located in a center of the second image; determining a first attitude angle of the optical device based on the first predetermined object in the second image and measurement data captured by an inertial navigation system; modifying the first attitude angle based on a positional relationship between the observation object and the first predetermined object in the second image, to obtain a second attitude angle; and calculating geographic coordinates of the observation object based on the second attitude angle.

Abstract: The present disclosure provides an exhaust assembly for an aerostat, including a valve base (2) provided with a valve port (1), and a valve cover (3) that selectively covers the valve port (1), and further including: a motor driving mechanism and a transmission mechanism that are arranged on the valve base (2). The motor driving mechanism propels the transmission mechanism to drive the valve cover (3) to selectively cover the valve port (1). When the valve cover (3) is in a position where the valve port (1) is open, the valve cover (3) is arranged at an angle with respect to a plane at which the valve port (1) is located. A purpose of the present disclosure is to provide the exhaust assembly that is for an aerostat and whose exhausting pressure can be flexibly adjusted, and an aerostat provided with the exhaust assembly.

Abstract: The present disclosure discloses a three-dimensional topographic mapping system and mapping method. The system includes: a floating platform, a detection apparatus, and a ground apparatus, where the floating platform is located in the stratosphere above a predetermined ground area that is to be mapped; the detection apparatus is arranged on the floating platform and configured to map the predetermined ground area according to mapping instruction information transmitted by the ground apparatus, and return mapping data to the ground apparatus; and the ground apparatus processes the returned mapping data to obtain DEM data. In the three-dimensional topographic mapping system according to embodiments of the present disclosure, the detection apparatus is arranged on the floating platform to map the predetermined ground area and cooperate with the ground apparatus to calculate the mapping data.

Abstract: The present invention discloses a positioning method and apparatus. The method includes: acquiring a first image captured by an optical device, where the first image includes an observation object and a plurality of predetermined objects, and the predetermined objects are objects with known geographic coordinates; selecting a first predetermined object from the predetermined objects based on the first image; acquiring a second image, where the first predetermined object is located in a center of the second image; determining a first attitude angle of the optical device based on the first predetermined object in the second image and measurement data captured by an inertial navigation system; modifying the first attitude angle based on a positional relationship between the observation object and the first predetermined object in the second image, to obtain a second attitude angle; and calculating geographic coordinates of the observation object based on the second attitude angle.

Abstract: The present invention provides a scanning method of a photoelectric remote sensing system including the following steps: providing a photoelectric remote sensing system that is suspended in the air; and S20, driving the photographing device by the pan-tilt device to scan a target area along a plurality of circular trajectories, driving the photographing device by the pan-tilt device to switch between the circular trajectories, so as to enable a scanning area of the photographing device to cover the entire target area; and adjusting an optical parameter of the photographing device while the photographing device is switched between the circular trajectories, so as to enable pictures photographed at all scanning points to have the same spatial resolution. The scanning method of the present invention can ensure that the scanning area fully covers a target area and pictures photographed at different target points have the same spatial resolution.

Abstract: A plate folding and unfolding device and a solar panel structure are provided. The plate folding and unfolding device includes a cam fixed with first plate piece, and a rotating shaft is disposed inside the cam in an axial direction of the cam; a connecting rod, where the connecting rod includes a first end and a second end that are opposite to each other, the first end is connected vertically to the rotating shaft, and the second end is fixed to a second plate piece; a positioning shaft, where the positioning shaft is disposed, on the connecting rod; and an elastic piece, where the elastic piece is disposed on the connecting rod, one end of the elastic piece is connected to the positioning shaft, where a groove that accommodates the positioning shaft is disposed at at least one location of the outer peripheral surface of the cam.

Abstract: A near space aircraft pod, including a pod body and a covering piece, where a heat dissipation part is disposed on the pod body for dissipating heat inside the pod body; and the covering piece is connected to the outside of the pod body in a movable manner, for covering the heat dissipation part or keeping a pre-designed distance from the heat dissipation part. According to the near space aircraft pod provided in the embodiments, the covering piece can adjust a distance from the heat dissipation part in time or cover the heat dissipation part based on a temperature change. Therefore, a heat dissipation speed of the pod can be effectively controlled, so that temperature inside the pod is kept in a proper range, and it is ensured that electronic devices in the pod operate under a good temperature environment.

Abstract: A solar cell assembly and an aerostat are disclosed. The solar cell assembly includes: a flexible base plate; and a plurality of rigid solar cells that are connected in series by using a conducting wire and that are disposed on a surface of the flexible base plate. According to the solar cell assembly provided in the present invention, the rigid solar cells are disposed on the flexible base plate. Therefore, the entire solar cell assembly can bend freely under specific pressure. The rigid solar cells do not bend as the entire device bends, thereby protecting the rigid solar cells from damage and implementing application of the rigid solar cells on a non-planar structure. A structure is simple, optical-to-electrical conversion efficiency is high, flexibility is achieved, and lamination is strong.

Abstract: The present invention discloses a visible light encryption method, a decryption method, a communication device and a communication system. The method includes: receiving a visible light signal from a transmit end, where the visible light signal is encrypted at the transmit end by using a key; and obtaining the key, and decrypting the visible light signal according to the key, where the obtaining the key includes: obtaining a key corresponding to a state of a state machine of a receive end; or, obtaining indication information according to the visible light signal and obtaining the key according to the indication information, where the indication information is used to obtain the key. The present invention solves a problem of decryption failure in visible light encryption and decryption, and improves accuracy of decryption.

Abstract: The present disclosure relates to the aerospace application field, and provides a method for flying a large balloon. In the method, a constraint apparatus is disposed on a balloon capsule to replace a roller, and the constraint apparatus is released progressively in a release process of the balloon capsule, so that the balloon capsule is released progressively and slowly before rising above a pod. This greatly reduces the impact in a flying process, makes it easier to control a flying status of the balloon capsule, and also makes related operations of onsite staffs simpler and controllable.

Abstract: The present disclosure provides an exhaust assembly for an aerostat, including a valve base (2) provided with a valve port (1), and a valve cover (3) that selectively covers the valve port (1), and further including: a motor driving mechanism and a transmission mechanism that are arranged on the valve base (2). The motor driving mechanism propels the transmission mechanism to drive the valve cover (3) to selectively cover the valve port (1). When the valve cover (3) is in a position where the valve port (1) is open, the valve cover (3) is arranged at an angle with respect to a plane at which the valve port (1) is located. A purpose of the present disclosure is to provide the exhaust assembly that is for an aerostat and whose exhausting pressure can be flexibly adjusted, and an aerostat provided with the exhaust assembly.

Abstract: The present disclosure discloses a three-dimensional topographic mapping system and mapping method. The system includes: a floating platform, a detection apparatus, and a ground apparatus, where the floating platform is located in the stratosphere above a predetermined ground area that is to be mapped; the detection apparatus is arranged on the floating platform and configured to map the predetermined ground area according to mapping instruction information transmitted by the ground apparatus, and return mapping data to the ground apparatus; and the ground apparatus processes the returned mapping data to obtain DEM data. In the three-dimensional topographic mapping system according to embodiments of the present disclosure, the detection apparatus is arranged on the floating platform to map the predetermined ground area and cooperate with the ground apparatus to calculate the mapping data.

Abstract: The present disclosure discloses a fire disaster monitoring method and apparatus. The method includes: obtaining an infrared image that is obtained through photoshooting a to-be-monitored area by an infrared detection apparatus located on an aerostat, where different colors displayed in the infrared image correspond to different temperatures; determining, according to the colors displayed in the infrared image, whether a difference between temperatures corresponding to adjacent areas in the infrared image is greater than a predetermined threshold; and if it is determined that the difference between the temperatures corresponding to the adjacent areas is greater than the predetermined threshold, sending fire disaster alarm information to a receiving device, where the fire disaster alarm information is used to indicate that a fire disaster occurs in the to-be-monitored area.

Abstract: An artificial microstructure used in artificial electromagnetic material includes a first line segment and a second line segment. The second line segment is perpendicular to the first line segment. The first line segment and the second line segment intersect with each other to form a cross-type structure. The present disclosure further relates to an artificial electromagnetic material using the artificial microstructure.

Abstract: The present invention provides an artificial electromagnetic material, comprising at least one material sheet layer; wherein each material sheet layer is provided with a first substrate and a second substrate which are oppositely arranged; and a plurality of artificial microstructures are attached on a surface, facing the second substrate, of the first substrate. The first substrate and the second substrate on both sides of the artificial microstructure are in such tight contact therewith that the number of electric field lines passing through the substrates is increased and the equivalent permittivity of the artificial electromagnetic material is effectively improved.

Abstract: The present invention discloses a light signal-based information processing method and device. The method includes: receiving trigger information; extracting corresponding information according to the trigger information; sending the extracted information in a form of a visible light signal, or receiving a visible light signal; obtaining modification of user information and user information according to the visible light signal; and modifying stored user list information according to the modification of user information and the user information, so that an authorization information list of a light signal receiving device can be modified conveniently no matter whether the light signal receiving device is fixed in a specific system.