In some examples, an unmanned aerial vehicle (UAV) may receive location information via the global navigation satellite system (GNSS) receiver and may receive acceleration information via an onboard accelerometer. The UAV may determine a first measurement of acceleration of the UAV in a navigation frame of reference based on information from the accelerometer prior to or during takeoff. In addition, the UAV may determine a second measurement of acceleration of the UAV in a world frame of reference based on the location information received via the GNSS receiver prior to or during takeoff. The UAV may determine a relative heading of the UAV based on the first and second acceleration measurements. The determined relative heading may be used for navigation of the UAV at least one of during or after takeoff of the UAV.

An image capturing apparatus comprising: an image capturing unit; a sound collecting unit; a detecting unit for detecting sound pressure level of a voice sound collected by the sound collecting unit, a recognizing unit for recognizing that a voice sound collected by the sound collecting unit is an instruction for shooting by the image capturing unit; and a control unit, wherein the control unit controls the image capturing unit to shoot in response that the detecting unit detects sound pressure level of a voice sound collected by the sound collecting unit is larger than a predetermined sound pressure level, and that the recognizing unit recognizes the voice sound as an instruction for shooting by the image capturing unit.

Disclosed are a vehicle navigation guidance system and a vehicle. The system includes: a navigation controller, a steering angle sensor, a motor steering controller and a display controller. The steering angle sensor is communicatively connected to the navigation controller, and is configured to acquire rotational angular velocity information of a wheel relative to a vehicle body, and output the angular velocity information to the navigation controller. The navigation controller is configured to output navigation guidance information according to positioning information and the angular velocity information, where the navigation controller includes a first positioning device, and the first positioning device is configured to acquire the positioning information. The motor steering controller is communicatively connected to the navigation controller, and is configured to perform steering control according to the navigation guidance information. The display controller is communicatively connected to the navigation controller, and is configured to display the navigation guidance information.

Disclosed are a vehicle navigation guidance system and a vehicle. The system includes: a navigation controller, a steering angle sensor, a motor steering controller and a display controller. The steering angle sensor is communicatively connected to the navigation controller, and is configured to acquire rotational angular velocity information of a wheel relative to a vehicle body, and output the angular velocity information to the navigation controller. The navigation controller is configured to output navigation guidance information according to positioning information and the angular velocity information, where the navigation controller includes a first positioning device, and the first positioning device is configured to acquire the positioning information. The motor steering controller is communicatively connected to the navigation controller, and is configured to perform steering control according to the navigation guidance information. The display controller is communicatively connected to the navigation controller, and is configured to display the navigation guidance information.

A method of determining an orientation of a nacelle of a wind turbine, wherein the nacelle carries a Global Navigation Satellite System (GNSS) sensor, the method comprising: yawing the nacelle between a series of orientations; obtaining locus data based on a series of calibration positions measured by the GNSS sensor, wherein each calibration position is measured by the GNSS sensor when the nacelle is in a respective orientation of the series of orientations; storing the locus data; after storing the locus data, measuring a new position with the GNSS sensor; and determining the orientation of the nacelle on the basis of the stored locus data and the new position.

A display control system includes a GNSS reception unit configured to receive position information from a GNSS controller, a display signal generation unit configured to generate a signal for displaying guidance information of a work machine based on the position information, a power signal reception unit configured to receive a power-off signal, and a shutdown processing unit configured to perform a shutdown process after a predetermined time has elapsed from receiving the power-off signal.

An apparatus and method for operating a communication system for a vehicle, comprising a directed communication receiver configured to output a signal related to beam tracking strength, an inertial reference module configured to receive the beam tracking strength and provide a heading observation based thereon. At least one indicator communicably coupled with the inertial reference module to provide an indication related to the heading of the vehicle.

A method for measuring a height on a plane, implemented by an electronic device, includes displaying an altitude obtained in a first detection manner, and displaying an altitude obtained in a second detection manner when a first switching condition is met. In this way, the electronic device displays an altitude detected based on a barometric pressure sensor. When a barometric pressure value of an environment in which the electronic device is located is inconsistent with an atmospheric pressure value, the data of the barometric pressure sensor is invalid. The electronic device displays an altitude obtained in another detection manner. In this way, the electronic device can display an accurate altitude in a case in which a user takes a plane.

A method for measuring a height on a plane, implemented by an electronic device, includes displaying an altitude obtained in a first detection manner, and displaying an altitude obtained in a second detection manner when a first switching condition is met. In this way, the electronic device displays an altitude detected based on a barometric pressure sensor. When a barometric pressure value of an environment in which the electronic device is located is inconsistent with an atmospheric pressure value, the data of the barometric pressure sensor is invalid. The electronic device displays an altitude obtained in another detection manner. In this way, the electronic device can display an accurate altitude in a case in which a user takes a plane.

A method of aligning an aircraft with a landing platform in motion comprises measuring a GPS heading with at least one GPS sensor positioned at a known location relative to the landing platform while the landing platform is in motion, measuring an orientation of the aircraft with an orientation sensor fixed relative to the aircraft, calculating an orientation of the landing platform from the GPS heading, calculating an orientation offset between the measured orientation of the aircraft and the calculated orientation of the landing platform, and changing an orientation of the aircraft or the landing platform to reduce the orientation offset. A system for landing and securing an aircraft in an enclosure, a system for disconnecting a tether from an aircraft, and a system for landing an aircraft in an enclosure are also described.