Abstract: A positioning method includes: receiving detection data sent by a positioning device, in which the detection data includes first satellite data of multiple satellites; determining prediction noise of each satellite based on the first satellite data, and determining a weight of each satellite based on the prediction noise; and determining a position of the positioning device based on the weight and observation equations.

Abstract: The present disclosure discloses a navigation method, a device, and a medium. The method includes: planning candidate routes based on a start position and an end position of a user, and obtaining a sequence of candidate road sections in each candidate route; matching each candidate road section in the sequence of candidate road sections in each candidate route with an association relationship between an actual road section and actual road auxiliary information, to obtain a sequence of auxiliary information of each candidate route; and sorting the auxiliary information in the sequence of auxiliary information of each candidate route to obtain a sorted result corresponding each candidate route, and selecting target road auxiliary information from the sequence of auxiliary information of each candidate route based on the sorted result, so as to select a target route from the candidate routes based on the target road auxiliary information.

Abstract: The present application discloses a terminal device locating method, a terminal device, a system, an emergency locating server, an electronic device and a storage medium, and relates to locating and information flow technologies. A specific implementation solution is: acquiring dialing information of a call of a terminal device, sending information related to a location of the terminal device through a non-network channel to an emergency locating server if the call is determined to be an emergency call according to the dialing information, where the information related to the location of the terminal device is used to locate the terminal device and obtain locating information of the terminal device.

Abstract: A method for generating a wireless signal fingerprint database includes: obtaining an initial atmospheric pressure value, in which the initial atmospheric pressure value is an atmospheric pressure value collected when a terminal enters indoors; obtaining periodically a current wireless signal fingerprint and a current atmospheric pressure value collected by the terminal; and determining a floor corresponding to the current wireless signal fingerprint based on the initial atmospheric pressure value and the current atmospheric pressure value, to obtain the wireless signal fingerprint database.

Abstract: The present disclosure provides a subway operating state prediction method and apparatus, an electronic device and a storage medium, and relates to technical fields such as intelligent transportation and artificial intelligence. A specific implementation solution involves: acquiring air pressure information of a mobile terminal used by a user on a subway at respective moments in a time window; and predicting an operating state of the subway in the time window based on the air pressure information at the moments in the time window.

Abstract: A positioning method includes: receiving detection data sent by a positioning device, in which the detection data includes first satellite data of multiple satellites; determining prediction noise of each satellite based on the first satellite data, and determining a weight of each satellite based on the prediction noise; and determining a position of the positioning device based on the weight and observation equations.

Abstract: A positioning method, an electronic device and a storage medium, which relate to a field of computer technology, and in particular to fields of positioning technology and satellite navigation technology. The method includes: acquiring satellite observation data for a target object, broadcast ephemeris data for the target object, and state space representation for the target object; performing an error correction on the broadcast ephemeris data using the state space representation; determining a target positioning model according to the satellite observation data and the corrected broadcast ephemeris data; and performing a resolving operation on the target positioning model to obtain position data of the target object.

Abstract: A positioning method and an on-board device. The method includes: acquiring positioning data of a vehicle from a satellite and positioning correction data from a base station; acquiring target positioning data of the vehicle by correcting the positioning data based on the positioning correction data; and sending the target positioning data to a terminal device to enable the terminal device to position the vehicle according to the target positioning data.

Abstract: An ushering method, an electronic device and a storage medium, related to the fields of short-distance positioning, geomagnetic positioning, computer vision positioning, map navigation, intelligent robots, ushering and the like, are provided. The method includes: in response to an ushering request initiated by a user, parsing a target dining position from the ushering request; creating a navigation route from a current position to the target dining position, wherein the navigation route comprises a first traveling route created in a case where an assistant robot is provided, or a second traveling route created by the user based on an ushering client; and performing ushering processing according to the navigation route, to usher the user to the target dining position. Manpower and material resource wastes are avoided, and convenient ushering for dining is implemented.

Abstract: An ephemeris data processing method, electronic device and storage medium are disclosed, which relate to the fields of satellite communication, positioning, and navigation. The ephemeris data processing method includes: receiving raw ephemeris data from a plurality of user devices; analyzing the raw ephemeris data according to an analysis mode of each user device and a satellite ephemeris protocol of each galaxy. According to embodiments of the present disclosure, ephemeris data of a plurality of user devices can be centrally processed and stored, thereby storing more complete ephemeris data and then providing more abundant ephemeris data.

Abstract: A building positioning method, an electronic device, a storage medium and a terminal device are disclosed, which relate to the technical fields of artificial intelligence, computer vision domains and intelligent traffic. The method includes: acquiring a building fingerprint library, the building fingerprint library including a plurality of groups of triplet data and a plurality of corresponding building information, wherein a single group of triplet data includes surveying and mapping data, GPS data and Wi-Fi data; receiving a positioning request, the positioning request including first triplet data, the first triplet data including first surveying and mapping data, first GPS data, and first Wi-Fi data; calculating a similarity between the first triplet data and the plurality of groups of triplet data in the building fingerprint library, respectively; and determining building information corresponding to the positioning request according to the calculated similarity.

Abstract: A method for guiding a blind, an electronic device, a storage medium and a blind guide product, and related to the technical field of navigation are provided. The method includes: acquiring Beidou satellite data and base station differential data, and determining location information of a user by using a carrier phase differential technology; in response to a blind guide request, generating a blind guide route according to current location information and destination information input by the user; and broadcasting a voice prompt based on the blind guide route. The location accuracy of a user is improved, and blind guide requirements for a complex road section can be met, thereby improving the travel safety for the user.

Abstract: The present application discloses a terminal device locating method, a terminal device, a system, an emergency locating server, an electronic device and a storage medium, and relates to locating and information flow technologies. A specific implementation solution is: acquiring dialing information of a call of a terminal device, sending information related to a location of the terminal device through a non-network channel to an emergency locating server if the call is determined to be an emergency call according to the dialing information, where the information related to the location of the terminal device is used to locate the terminal device and obtain locating information of the terminal device.

Abstract: The present disclosure discloses a navigation method, a device, and a medium. The method includes: planning candidate routes based on a start position and an end position of a user, and obtaining a sequence of candidate road sections in each candidate route; matching each candidate road section in the sequence of candidate road sections in each candidate route with an association relationship between an actual road section and actual road auxiliary information, to obtain a sequence of auxiliary information of each candidate route; and sorting the auxiliary information in the sequence of auxiliary information of each candidate route to obtain a sorted result corresponding each candidate route, and selecting target road auxiliary information from the sequence of auxiliary information of each candidate route based on the sorted result, so as to select a target route from the candidate routes based on the target road auxiliary information.

Abstract: A method for obtaining the effective contents of a web page comprises steps of: loading an HTML web page: converting the HTML web page into a corresponding DOM tree; finding a title label of effective contents according to the DOM tree, determining the text contents in the found title label as the title of the effective contents; searching sequentially for text labels in a <body> label of the DOM tree in accordance with label distances from short to long between the text labels and the title label, determining a text label having a text length larger than a predetermined length and some specific symbols related to the main text as a main text label, and then taking the text contents in the main text label as the main text of the effective contents. An apparatus corresponding to the method comprises corresponding modules.