METHODS AND SYSTEMS FOR TERRAIN-BASED LOCALIZATION OF A VEHICLE

    公开(公告)号:US20250012576A1

    公开(公告)日:2025-01-09

    申请号:US18712308

    申请日:2022-11-23

    Inventor: William Graves

    Abstract: Methods and systems are described for accurately determining the location of a vehicle traveling along a road. Methods include first locating the approximate position of a vehicle using techniques such as GNSS or dead reckoning from a know location, and then refining the position of the vehicle using terrain-based localization. This type of localization includes the use of the temporal and spatial variation of magnitude of the correlation between a current road surface profile, obtained while traveling along a road, and previously obtained reference profiles of the same road.

    DYNAMICALLY TUNABLE COMBINATION REACTIVE-PROACTIVE CONTROLLER

    公开(公告)号:US20250144967A1

    公开(公告)日:2025-05-08

    申请号:US18837668

    申请日:2023-02-13

    Abstract: Combination reactive-proactive controllers and their use are described herein. In a first mode of operation, such controllers may rely simultaneously both a priori information about a road surface ahead of the vehicle obtained from a data base and real time information collected by one or more on-board sensors. Alternatively, in a second mode, such controllers may rely only on real time information collected by one or more on-board sensors. Systems controlled by such controllers may include, but are not limited to, active suspension actuators.

    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

    CPC classification number: G06F18/23 G01S19/40 G01S19/42

    Abstract: 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.

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