Abstract: A directional antenna tracking method includes obtaining first motion feature information of a first device, receiving second motion feature information transmitted from a second device, calculating tracking information of a first directional antenna of the first device with respect to a second directional antenna of the second device based on the first motion feature information and the second motion feature information, and controlling the first directional antenna to move according to the tracking information to face toward the second directional antenna.

Abstract: A method and head-mounted display glasses for controlling an unmanned aerial vehicle (UAV) are provided. A movable mark is displayed, and input information of a user is acquired. According to the input information, the movable mark is moved to control the UAV.

Abstract: A method for establishing a data connection between a mobile terminal and a server includes sending a request for data connection to the server, generating a random password, transmitting the random password to the server for storing in the server, establishing the data connection between the mobile terminal and the server, and encrypting data to be transmitted through the communication connection using the random password.

Abstract: The present disclosure describes systems and methods for operating a movable object using a machine readable code. In one embodiment, an image may be obtained by the movable object. The image may include a machine-readable code configured to store a set of operation data for controlling the movable object. The movable object may process the image to retrieve the machine-readable code and the set of operation data. The movable object further may adjust one or more operation parameters of the movable object based on the set of operation data.

Abstract: The present invention provides for a composition comprising a heterostructure capable of electrochemical CO reduction to a carbon-carbon product, comprising an inorganic material and a porous molecule.

Abstract: A system for controlling an unmanned aerial vehicle (UAV) includes smart glasses and a remote controller. The smart glasses are configured to establish a first channel directly with the UAV, receive first person view (FPV) image data directly from the UAV through the first channel, and display the FPV image data. The remote controller is configured to establish a second channel directly with the UAV, and send a flight control instruction directly to the UAV through the second channel.

Abstract: A metal-ion battery includes: 1) an anode including a metal; 2) a cathode; and 3) an ionic liquid electrolyte disposed between the anode and the cathode, wherein the ionic liquid electrolyte corresponds to a mixture of a metal halide and an organic compound.

Abstract: A wearable apparatus includes a first display screen having a first display plane, a second display screen having a second display plane, a first optical mirror including a first reflective surface facing the first display screen, a second optical mirror including a second reflective surface facing the second display screen, a first eyepiece arranged between the first display screen and the first optical mirror, and a second eyepiece arranged between the second display screen and the second optical mirror. An optical axis of the first eyepiece is approximately parallel to the first display plane. An optical axis of the second eyepiece is approximately parallel to the second display plane. The first reflective surface and the first display screen form a first predetermined angle. The second reflective surface and the second display screen form a second predetermined angle.

Abstract: A rail vehicle bogie traction device is provided, which includes a center pin and two traction rubber bag assemblies. Each of the traction rubber bag assemblies includes a traction rubber stack and a rubber bag, the rubber bag is filled with fluid, and a pressure of the rubber bag is settable. The traction rubber stack is connected to the rubber bag. The center pin is fixed on a lower surface of a vehicle body chassis bolster. Each of the two traction rubber bag assemblies has one end connected to the center pin, and another end connected to a cross beam of a rail vehicle frame. The rail vehicle bogie traction device has nonlinear characteristics, which may effectively transmit a longitudinal load, and may also prevent high-frequency vibration of the frame from transmitting to the vehicle chassis bolster and the vehicle body via the traction device.

Abstract: The present invention provides a method for monitoring an unmanned aerial vehicle (UAV). The method may comprise: generating, with aid of one or more processors, a datagram comprising monitoring data indicating at least one of: a location of the UAV or a location of a control station in communication with the UAV; and transmitting the datagram along with working data for communication between the UAV and the control station such that datagram can be received by the one or more detectors within a range of the UAV.

Abstract: A method of providing communication coverage includes collecting a location of an unmanned aerial vehicle (UAV) while the UAV is in flight, determining a communication signal distribution in a proximity of the UAV, and determining one or more locations for arranging one or more relays based on the communication signal distribution to improve communication signal coverage along a flight path of the UAV.

Abstract: A secure communication method comprising obtaining a secret code generated in response to a first communication device being paired with a second communication device, obtaining a prestored product key, generating a module key based on the secret code and the product key, randomly generating a session key, obtaining a key sequence number, auto-incrementing the key sequence number, setting a sending sequence number with an initial value of zero, generating a key frame by performing a computation on the session key and a verification authentication code of the session key using the module key, sending a data packet including the key frame, the key sequence number, the sending sequence number, and a data type to the second communication device. The data type indicates that the data packet is a key data packet.

Abstract: A flight data exchanging method includes receiving a control instruction for transmitting flight data of an aerial vehicle, encrypting the flight data, transmitting the flight data to a server, and receiving a transmission status of the flight data from the server.

Abstract: An authentication method includes that an authentication apparatus of an unmanned aerial vehicle (UAV) generates a session key, the authentication apparatus receives a device identification (ID) of a device and a randomly generated random number from the device of the UAV, the authentication apparatus obtains a device key of the device according to the device ID of the device, the authentication apparatus encrypts the session key and the random number according to the device key of the device, and the authentication apparatus sends the encrypted session key and the encrypted random number to the device.

Abstract: A method for supervising a flight state of an unmanned aerial vehicle includes establishing a communication connection with a control terminal of the unmanned aerial vehicle, and receiving and storing an off-line flight certificate sent by the control terminal. The off-line flight certificate includes off-line flight parameters. The method further includes monitoring and restricting, in response to the unmanned aerial vehicle being in an off-line flight mode, a flight behaviour of the unmanned aerial vehicle in the off-line flight mode according to the off-line flight parameters in the off-line flight certificate.

Abstract: The systems and methods are provided to provide communication coverage to an unmanned aerial vehicle. A proposed flight path of a UAV may be collected, and a communication signal distribution, such as a cellular signal distribution, along the proposed flight of the UAV may be determined. At positions having low or no communication signal, relays may be provided to improve a quality of the communication signal. The relay may be a ground device or an aerial vehicle. A stable and continuous communication between the UAV and user terminals during the entire flight path of UAV may be provided, and a coverage of cellular signal may be expanded.

Abstract: Systems and methods for UAV safety are provided. An authentication system may be used to confirm UAV and/or user identity and provide secured communications between users and UAVs. The UAVs may operate in accordance with a set of flight regulations. The set of flight regulations may be associated with a geo-fencing device in the vicinity of the UAV.

Abstract: A device for recording user operation data for a remotely controlled vehicle includes a memory off-board the remotely controlled vehicle and a housing receiving the memory. The memory is configured to record user operation data comprising outgoing operation commands that affect operation of the remotely controlled vehicle. The outgoing operation commands are received via a remote controller of the remotely controlled vehicle and transmitted to the remotely controlled vehicle. The housing is removable from the remote controller and more resistant to destruction than the rest of the remote controller.

Abstract: Systems and methods for UAV safety are provided. An authentication system may be used to confirm UAV and/or user identity and provide secured communications between users and UAVs. The UAVs may operate in accordance with a set of flight regulations. The set of flight regulations may be associated with a geo-fencing device in the vicinity of the UAV.

Abstract: Systems and methods for UAV safety are provided. An authentication system may be used to confirm UAV and/or user identity and provide secured communications between users and UAVs. The UAVs may operate in accordance with a set of flight regulations. The set of flight regulations may be associated with a geo-fencing device in the vicinity of the UAV.