Positioning method and device, and server and system

    公开(公告)号:US12117541B2

    公开(公告)日:2024-10-15

    申请号:US16760510

    申请日:2018-11-02

    申请人: ZTE Corporation

    摘要: Provided is a positioning method, including following steps: current location information is determined, and the current location information is sent to a positioning server; identification information of a guidepost and guidepost location information of the guidepost sent by the positioning server are received; and an image of a current location is acquired, the image is matched with the identification information of the guidepost, and in response to a success in matching the image with the identification information of the guidepost, corrected current location information is obtained according to the guidepost location information, or the current location information and the guidepost location information.

    SYSTEMS AND METHODS FOR GNSS AUGMENTATION VIA TERRAIN-BASED CLUSTERING INSIGHTS

    公开(公告)号:US20240289423A1

    公开(公告)日:2024-08-29

    申请号:US18572873

    申请日:2022-06-21

    申请人: ClearMotion, Inc.

    IPC分类号: G06F18/23 G01S19/40 G01S19/42

    CPC分类号: G06F18/23 G01S19/40 G01S19/42

    摘要: Methods and systems related to determining the ordering and/or positioning of travel lanes on a road segment are disclosed. In some embodiments, this may include obtaining and clustering road surface profiles associated with a road segment using, for example, a degree of similarity or other appropriate metric. A lateral offset or position of the clustered profiles may be used in determining the lane ordering and/or position. The resulting lane specific information may be used to determine a travel lane for a vehicle by comparing a current road-profile obtained from the vehicle and the road profile information associated with the different lanes. In other embodiments, a method and/or system for augmenting a global navigation satellite system (GNSS) signal may include using a raw GNSS signal and a GNSS location associated with terrain-based data to determine a lateral offset for use in determining a corrected GNSS location of the vehicle.

    Perception data based GNSS multipath identification and correction

    公开(公告)号:US12061276B2

    公开(公告)日:2024-08-13

    申请号:US17890185

    申请日:2022-08-17

    发明人: Shahram Rezaei

    IPC分类号: G01S19/42 G01S19/25 G01S19/51

    摘要: Perception data based multipath identification and correction is based on recognition that sensors such as radar, LIDAR, and cameras can generate perception data indicative of locations and properties of terrestrial objects in an environment surrounding a satellite navigation device (e.g., a GNSS receiver), which data may then be used in training, or updating, a model for determining or correcting distances to satellites to account for multipath. Multipath identification includes identifying multipaths to train the model, e.g., by using perception data to perform ray tracing. Multipath correction includes using the model to correct distance errors due to the multipaths or, equivalently, using the model to determine distances to satellites in a manner that accounts for the multipaths.

    Method and system for geolocating an object using a mobile base station

    公开(公告)号:US12055651B2

    公开(公告)日:2024-08-06

    申请号:US17613030

    申请日:2020-05-25

    申请人: SIGFOX

    IPC分类号: G01S19/42 G01S5/00 G01S5/02

    摘要: A method for geolocating a terminal of a wireless communication system from measurements of a parameter representative of a radio signal exchanged between the terminal and base stations of the communication system. The method uses fixed base stations and a mobile base station which is displaced in a determined search area. During a predefined search period, the terminal emits several radio signals to the fixed base stations and the mobile base station. A precise geographical position can then be determined, on the one hand, from the measurements carried out during the search period for the different base stations, and on the other hand, from the geographical positions of the fixed base stations and from the geographical positions of the mobile base station at the different times of emission of the radio signals by the terminal.