Abstract: Systems and methods for synchronizing communications between a movable object and first and second control devices are provided. In some exemplary implementations, the systems and methods may synchronize the first control device with the movable object, synchronize the second control device with the first control device, and synchronize the second control device with the movable object based on the synchronization between the second control device and the first control device.

Abstract: An unmanned aerial vehicle system includes an unmanned aerial vehicle and a remote controller, where the unmanned aerial vehicle includes a first controller unit configured to determine whether the unmanned aerial vehicle can pair via a first communication unit with the remote controller, and when the unmanned aerial vehicle cannot pair with the remote controller, to send out via a second communication unit pairing information of the unmanned aerial vehicle and version information of a first private communication protocol of the first communication unit, and the remote controller includes a second controller unit configured to determine whether the remote controller can pair via a third communication unit with the unmanned aerial vehicle, and when the remote controller cannot pair with the unmanned aerial vehicle, to send out via a first communication interface pairing information of the remote controller and version information of a second private communication protocol of the third communication unit.

Abstract: An out-of-synchronization processing method implemented in an intermediate communication apparatus includes obtaining synchronization information for synchronizing with a downstream communication apparatus, and performing a search for an upstream communication apparatus and a communication with the downstream communication apparatus. A parameter is adjusted according to the synchronization information during the communication with the downstream communication apparatus.

Abstract: The present disclosure relates to systems and methods for operating an online on-demand service platform. The systems may perform the methods to: receive confirmation that a service provider has accepted a service request from a service requester; acquire feature information associated with the service provider; acquire surrounding information associated with the service provider; generate identification information of the service provider based on the feature information or the surrounding information for the service requester to identify the service provider; and transmit the identification information of the service provider to a requester terminal associated with the service requester.

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: An electric controlled bi-directional bending actuator with deformability and stiffness tunable capacity is disclosed. The electric controlled bi-directional bending actuator with deformability and stiffness tunable capacity comprises three kinds of functional layers that are electro-deformable layers, electro-variable stiffness layers and flexible electrodes. From up to bottom, they are the first flexible electrodes layer, the first electro-deformable layer, the second flexible electrodes layer, the electro-variable stiffness layer, the third flexible electrode layer, the second electro-deformable layer and the fourth flexible electrode layer. The adjacent layers are glued together. The electro-deformable layer is made from dielectric elastomers. The electro-variable stiffness layer is made from electro-rheological materials, including electro-rheological fluids, electro-rheological gels or electro-rheological elastomers.

Abstract: An unmanned aerial vehicle (UAV) includes a sensor configured to detect an indicator of a geo-fencing device; and a flight controller configured to generate one or more signals that cause the UAV to operate in accordance with a set of flight regulations that are generated based on the detected indicator of the geo-fencing device.

Abstract: A pairing method implemented in a first device includes obtaining identification information of a second device. The pairing method also includes transmitting a pairing request message to the second device, the pairing request message carrying a system key. The pairing method also includes receiving a pairing response message from the second device. The pairing method also includes analyzing the pairing response message based on the system key. The pairing method further includes verifying the analyzed pairing response message based on the identification information.

Abstract: Improved steel compositions and methods of making the same are provided. The present disclosure provides advantageous wear resistant steel. More particularly, the present disclosure provides high manganese (Mn) steel having enhanced wear resistance, and methods for fabricating high manganese steel compositions having enhanced wear resistance. The advantageous steel compositions/components of the present disclosure improve one or more of the following properties: wear resistance, ductility, crack resistance, erosion resistance, fatigue life, surface hardness, stress corrosion resistance, fatigue resistance, and/or environmental cracking resistance. In general, the present disclosure provides high manganese steels tailored to resist wear and/or erosion.

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 control terminal includes a memory storing program instructions, a communication interface configured to communicate with an unmanned aerial vehicle (UAV), receive position information outputted by a positioning device of the UAV and sent by the UAV, and receive flight state information of a plurality of aircrafts detected by an aircraft detection device of the UAV and sent by the UAV, and a processor configured to execute the program instructions to detect an operation state of the positioning device based on the position information and the flight state information.

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 wireless communication method includes receiving, by an external device, a request to transmit data to an aircraft, in response to a triggering condition being satisfied, switching a communication electric circuit of the aircraft from operating a first software defined ration (SDR) firmware to operating a second SDR firmware, and receiving, by the aircraft, data to be transmitted. Communication electric circuits of the aircraft and the external device are respectively configured to execute corresponding SDR firmwares to establish communication links. The first SDR firmware is configured to establish a communication link of the aircraft, and the second SDR firmware is configured to establish a communication link of the external device. A bandwidth of a communication link of the aircraft operated with the second SDR firmware is broader than a bandwidth of the communication link of the aircraft operated with the first SDR firmware.

Abstract: An image processing method includes obtaining a current image frame. The image processing method also includes in response to feedback information, determining a reference image frame for coding the current image frame based on the feedback information. The feedback information is transmitted by a receiver based on a variable feedback time interval, and is configured to indicate a transmission status of an image frame transmitted by a transmitter to the receiver prior to the feedback information. The image processing method also includes coding the current image frame based on an inter-frame coding and the reference image frame to generate coded data. The image processing method further includes transmitting the coded data to the receiver.

Abstract: A remote control command transmission method includes obtaining remote control command transmission instruction information and transmitting a target remote control command to a mobile platform according to the transmission instruction information. The target remote control command includes a basic remote control command or a compressed remote control command. The basic remote control command includes an original remote control command. The compressed remote control command includes a remote control command generated based on a current original remote control command detected at a current moment and a previous original remote control command detected before the current moment.

Abstract: A computer-implemented method includes receiving a feedback message from a receiver of image data. The feedback message includes a reference frame identifier associated with a reference frame correctly received or decoded by the receiver. The method further includes determining a difference between the reference frame identifier and a current frame identifier. The current frame identifier is associated with a current frame to be encoded and the difference indicates a number of frames between the reference frame and the current frame. The method also includes encoding the current frame based at least in part on the difference.

Abstract: An image processing method includes sending, by a receiving terminal to a transmitting terminal according to a feedback time interval, a feedback message indicating a reception state of a received image frame sent by the transmitting terminal and received by the receiving terminal before the feedback message is sent; upon detecting a reception error of a target image frame before a first time point, sending a first feedback message indicating the reception error to the transmitting terminal at the first time point; and upon receiving, after the first time point and before a second time point, encoded data of the target image frame obtained according to an error correction mechanism from the transmitting terminal, sending a second feedback message indicating a correct reception to the transmitting terminal at the second time point. A time period between the first and second time points equals the feedback time interval.

Abstract: A wireless communication method includes receiving a data transmission request. The wireless communication method also includes increasing a transmission bandwidth of an uplink based on the data transmission request. The wireless communication method also includes receiving data to be transmitted through the uplink. The uplink is a communication link through which an external device transmits data to an aircraft.

Abstract: Provided is an oil, gas and/or petrochemical ferrous or non-ferrous material component including two or more segments of ferrous or non-ferrous components for joining, wherein the two or more segments are of the same or different materials, and laser metal deposition weldments bonding adjacent segments of said components together. Also provided are methods of making laser metal deposition weldments and their uses in the oil, gas and petrochemical industry.

Abstract: Systems and methods for determining an order accepting mode for a target service provider are provided. A method includes receiving a request for determining an order accepting mode for the target service provider. The method also includes obtaining an order accepting evaluation parameter with respect to the target service provider in response to the request. The method also includes determining an order accepting mode for the target service providers based on the order accepting evaluation parameter. The order accepting mode includes at least one of an order designating mode, an order striving mode, or an order quick-accepting mode.