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 UAV system includes a remote controller including two first antennas and a UAV including two second antennas arranged at two landing stands of the UAV, respectively. The two first antennas and the two second antennas are configured to establish a 2×2 MIMO communication link. The remote controller is configured to transmit current terminal position information of the remote controller to the UAV via the 2×2 MIMO communication link. The UAV determines current remote controller relative position information of the remote controller relative to the UAV according to the current terminal position information and current UAV position information acquired via a position sensor, and controls communication between the UAV and the remote controller according to the current remote controller relative position information.

Abstract: A method for remotely updating firmware of a field programmable gate array (FPGA) includes: by a controller, transmitting a storing instruction and relaying an entry of configuration data received from a remote device to a processor of the FPGA; by the processor, performing an updating subtask to store a file segment recorded in the entry of configuration data in an update-storage area indicated by location information recorded in the entry of configuration data; by the controller, determining whether the processor has successfully completed the updating subtask, and when affirmative, enabling the remote device to transmit another entry of configuration data; and repeating the aforementioned steps.

Abstract: A method for communicating ground terminal-to-unmanned aerial vehicle (GT-UAV) data one or more times to an unmanned aerial vehicle (UAV) from a ground terminal includes receiving the GT-UAV data over a wireless channel, transmitting UAV image data to the ground terminal over the wireless channel, determining whether the received GT-UAV data is transmitted according to an Acknowledgment (ACK) protocol, and transmitting an acknowledgment signal over the wireless channel to the ground terminal in response to the received GT-UAV data being determined to be transmitted according to the ACK protocol.

Abstract: An industrial fabric is a web woven from warp yarns made of monofilaments and weft yarns made of monofilaments. The warp yarns are of a double-layer structure. One of warp yarn basic units comprises four sub-units, two sub-units being located on an upper layer, the other two sub-units being located on a lower layer. The warp yarns on the upper layer and the warp yarns on the lower layer are vertically overlapped, wherein at least two sub-units comprise two parallel narrow warp yarns. Upper warp yarns and lower warp yarns are identical in texture structure, or one surface is identical to the other surface after rotating by 180 degrees. The industrial fabric is stable in structure and good in overall consistency. The upper surface is good in flatness, the surface is free from defects, and the quality and intensity of the fabric are improved.

Abstract: A method for preparing a light emitting diode chip, the method including: 1) providing a substrate; 2) growing an n-type semiconductor layer, an active layer and a p-type semiconductor layer on the substrate sequentially in that order; 3) forming a step including an upper horizontal end surface, a lower horizontal end surface and a step surface in the n-type semiconductor layer, the active layer and the p-type semiconductor layer; 4) growing a transparent conductive layer on the upper horizontal end surface, and forming an etching hole in the middle of the transparent conductive layer; 5) forming an N electrode on the lower horizontal end surface, and forming a P electrode in the etching hole; 6) growing a metal catalyst layer on the light emitting diode chip; and 7) forming a fluorinated graphene protective layer on the metal catalyst layer.

Abstract: A process for converting naphtha, lower olefin, light aromatic hydrocarbon, and gasoline with a high octane number by combining catalytic cracking of naphtha with steam cracking of lower alkane and catalytic cracking of higher alkanes and higher olefins. The process increases the yield of product with high value and significantly decreases the yield of low value product. At the same time, the power consumption is decreased as a whole since most reactants are converted in catalytic cracking at a lower temperature.

Abstract: An antenna automatic alignment method for a rotor unmanned aerial vehicle (UAV) includes acquiring current feature information of a plurality of antennas of the rotor UAV in real time. The antennas are disposed at substantially U-shaped landing gears of the rotor UAV. The method further includes selecting one of the antennas to establish a point-to-point communication link with a remote controller of the rotor UAV in accordance with the current feature information of the plurality of antennas. The antennas include spare antennas and current communication antennas, and a number of the spare antennas equals a number of the current communication antennas.

Abstract: An antenna automatic alignment method for a mobile object includes acquiring, in real time, current feature information of a plurality of antennas of the mobile object, and selecting one of the antennas to establish a communication link with a wireless terminal in accordance with the current feature information of the plurality of antennas.

Abstract: The present disclosure describes apparatuses and techniques for measuring position and velocity. In some aspects, Global Navigation Satellite System (GNSS) signals and feedback information are received. The feedback information may include predicted code phase information and predicted Doppler information. The feedback information is used to define a LOS region of a search space, the search space having dimensions in a code phase domain and in a Doppler domain. The GNSS signals within the search space are operated on to produce measurements of the GNSS signals across the code phase domain and the Doppler domain of the search space. The produced measurements are operated on within the LOS region of the search space to select measurements associated with a line of sight (LOS) signal. The selected measurements are operated on to produce position and/or velocity information associated with the LOS signal.

Abstract: Systems and methods that include: providing input information in an electronic format; converting at least a part of the electronic input information into an optical input vector; optically transforming the optical input vector into an optical output vector based on an optical matrix multiplication; converting the optical output vector into an electronic format; and electronically applying a non-linear transformation to the electronically converted optical output vector to provide output information in an electronic format. In some examples, a set of multiple input values are encoded on respective optical signals carried by optical waveguides. For each of at least two subsets of one or more optical signals, a corresponding set of one or more copying modules splits the subset of one or more optical signals into two or more copies of the optical signals.

Abstract: A method of assessing impact of applications executed by a computing device on a memory of the computing device includes: storing, in the memory, (i) a plurality of reference write operation sizes, and (ii) for each reference write operation size, a corresponding reference endurance indicator defining a write endurance; executing, at a processor of the computing device interconnected with the memory, a monitor application simultaneously with a test application; via execution of the monitor application at the processor: generating a usage profile for the test application, the usage profile defining a measured write operation size and a measured write operation rate for write operations initiated by the test application; determining an impact indicator for the test application based on the usage profile, the reference write operation sizes and the reference endurance indicators; and presenting the impact indicator.

Abstract: The present disclosure provides a method and apparatus for flight control and an aerial vehicle thereof. The flight control used in an aerial vehicle includes the following steps: identifying a reference object in a flight environment; obtaining a distance between the aerial vehicle and the reference object; acquiring a flight strategy corresponding to the distance based on a correspondence between the distance between the aerial vehicle and the reference object and the flight strategy; and, controlling the aerial vehicle to fly based on the flight strategy. The method and apparatus for flight control and an aerial vehicle thereof can be used to perform effective obstacle avoidance.

Abstract: A mobile terminal able to autonomously recognize when a user requires the mobile terminal to function as a mirror includes a housing, a screen with one-way see-through glass, a gravity sensor, a distance sensor, a front camera, a processor, and a storage device. At least two kinds of information are being collected, namely an orientation of the mobile terminal collected by the gravity sensor and a distance between a face and the screen collected by the distance sensor. Other information as to a facial expression and hand actions can also be collected by the front camera. The information is analyzed and a determination is made as to whether the user wishes to look in a mirror, and the screen will be controlled to be dark and shut down for the mirror function.

Abstract: A wireless transmission protocol for exchanging data between an unmanned aerial vehicle and a ground terminal is provided. The unmanned aerial vehicle is configured to transit image or video media data while mid-flight. The unmanned aerial vehicle and the ground terminal share a single communications channel using a time division multiple data access protocol. The unmanned aerial vehicle and the ground terminal use different communication protocols to send different types of data signals.

Abstract: A method and system used to detect characteristic information of internal body tissues applies multiple AC currents of different frequencies simultaneously to a human or animal body. After the modulated voltage signals are received, they are demodulated. Information from both the cardiovascular system and the surrounding tissues is extracted from the carrier waves of specified frequencies. System identification or channel estimation procedures are performed to separate the information from the cardiovascular circulation system and the surrounding tissues. The resistance and capacitance of the cardiovascular system and surrounding tissues are calculated separately. The calculated resistance and capacitance values are used to represent the states of body fluid and cardiovascular circulation. As a result, relevant state information is obtained accurately and reliably to enable accurate measurements of targeted tissues for acquiring health states.

Abstract: The present disclosure provides a claw massage apparatus including a drive mechanism, a transmission mechanism, a base and a plurality of massage mechanisms. The drive mechanism may drive rotation of the transmission mechanism, and the transmission mechanism is provided with a moving rail. The transmission mechanism is rotatably connected to the base. The plurality of massage mechanisms includes a connecting pail connected to the moving rail in a transmission way and a massage claw positioned outside the base. Wherein the drive mechanism can drive rotation of the moving rail, during the rotation of the moving rail, the respective connecting parts can be pushed to swing, such that the respective massage claws move between the first extreme position and the second extreme position, in a first extreme position, the respective massage claws are close to each other; in a second extreme position, the respective massage claws are distanced from each other.

Abstract: The present application relates to a bus FC-AE-1553 network system and a method of data transmission and acquisition. The bus FC-AE-1553 network system includes a network controller, at least one network terminal, a bus optical distribution network, an optical splitter and a network matching device. The network controller optical distribution networks used for managing a communication process of the whole bus FC-AE-1553 network system; the network terminal optical distribution networks used for passively receiving an instruction of the network controller in the FC-AE-1553 network system, and completing an operation for the instruction of the network controller; the optical splitter is used for realizing branching of a fibre channel signal; and the network matching device is used for terminal matching of the bus optical distribution network, and realizing sequence forwarding.

Abstract: An adapter device for test, including: an adapter board having a voltage input terminal connected to an external power supply and an output terminal connected to a terminal to be tested; a voltage conversion circuit disposed on the adapter board and connected to the voltage input terminal and configured to convert the voltage of the external power supply received at the voltage input terminal into a test voltage to be supplied to the terminal to be tested; a feedback circuit connected to the voltage conversion circuit and configured to compare the test voltage with a reference voltage to provide feedback data; and a compensation circuit connected to the feedback circuit and the adapter board, and configured to generate a compensation voltage based on the feedback data and apply the compensation voltage to the adapter board to compensate for the test voltage.

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.