In an apparatus for controlling operation of a utility vehicle that runs a working area to perform work by a work unit, there provided with a set mowing height inputting unit configured to input a mowing height of lawn mowing work set by a user, a desired mowing height setting unit configured to set a desired mowing height based on the set mowing height inputted by the set mowing height inputting unit, and a mowing height regulating unit configured to regulate height from ground surface of the work unit based on the desired mowing height set by the desired mowing height setting unit.

In one embodiment, a method includes at a mapping server receiving from a plurality of regional servers a plurality of regional magnetic data sets; at the mapping server updating a geomagnetic map with one or more of the regional magnetic data sets, wherein the geomagnetic map comprises one or more of the geographic regions; and from the mapping server communicating one or more portions of the geomagnetic map as updated to one or more of the regional servers for distribution as geomagnetic map information to one or more of the magnetic navigation devices for localization or navigation.

In one embodiment, a method includes at a mapping server receiving from a plurality of regional servers a plurality of regional magnetic data sets; at the mapping server updating a geomagnetic map with one or more of the regional magnetic data sets, wherein the geomagnetic map comprises one or more of the geographic regions; and from the mapping server communicating one or more portions of the geomagnetic map as updated to one or more of the regional servers for distribution as geomagnetic map information to one or more of the magnetic navigation devices for localization or navigation.

There is provided an apparatus, wherein the apparatus is configured to perform operations comprising: obtaining heading information indicating a target heading to a target; detecting, during swimming, that the swimmer deviates from the target heading; and informing the swimmer, via a user interface element, that the swimmer has deviated from the target heading.

There is provided an apparatus, wherein the apparatus is configured to perform operations comprising: obtaining heading information indicating a target heading to a target; detecting, during swimming, that the swimmer deviates from the target heading; and informing the swimmer, via a user interface element, that the swimmer has deviated from the target heading.

A method of estimating a location of a user terminal is provided. It is based on a difference between a true north and a magnetic north that may estimate a location of a user terminal on a magnetic field map based on a difference between a true north and a magnetic north corresponding to each location of the magnetic field map, and the user terminal thereof.

A method of estimating a location of a user terminal is provided. It is based on a difference between a true north and a magnetic north that may estimate a location of a user terminal on a magnetic field map based on a difference between a true north and a magnetic north corresponding to each location of the magnetic field map, and the user terminal thereof.

In one embodiment, a method includes collecting, by a magnetic navigation device, magnetic measurements of a particular geographical region in accordance with a position and trajectory of the magnetic navigation device; accessing a global navigation satellite system (GNSS) signal status and a network connection status on the magnetic navigation device; determining an operational mode for the magnetic navigation device based on the GNSS signal status and the network connection status; determining whether to transmit the magnetic measurements to a server or store the magnetic measurements locally on the magnetic navigation device based on the operational mode; and performing navigation or localization operations using the operational mode.

In one embodiment, a method includes collecting, by a magnetic navigation device, magnetic measurements of a particular geographical region in accordance with a position and trajectory of the magnetic navigation device; accessing a global navigation satellite system (GNSS) signal status and a network connection status on the magnetic navigation device; determining an operational mode for the magnetic navigation device based on the GNSS signal status and the network connection status; determining whether to transmit the magnetic measurements to a server or store the magnetic measurements locally on the magnetic navigation device based on the operational mode; and performing navigation or localization operations using the operational mode.

Embodiments of present disclosure disclose a method for updating geomagnetic information performed at a computing device, which belong to the field of electronic technologies. The method includes: receiving target geomagnetic information and target location assistance information that are transmitted by a terminal during positioning; determining a target geographical location corresponding to the target location assistance information in a case that geomagnetic information corresponding to a current geographical location of the terminal is invalid; and updating geomagnetic information corresponding to the target geographical location according to the target geomagnetic information in a prestored correspondence between a geographical location and geomagnetic information. According to the embodiments of the present disclosure, efficiency of updating geomagnetic information can be improved.