ROBUST LANE-BOUNDARY ASSOCIATION FOR ROAD MAP GENERATION

    公开(公告)号:US20220230017A1

    公开(公告)日:2022-07-21

    申请号:US17153704

    申请日:2021-01-20

    Abstract: Association algorithms of newly-detected lane boundaries to lane boundaries can be made more robust through the use of generated or “dummy” states. Different types of dummy states can be used to identify outlier/erroneous detections and/or new, legitimate lane boundaries. Therefore, depending on a type of dummy state a newly-detected lane boundary is associated with, the newly-detected lane boundary can be ignored, or the associated dummy state can be added to the lane boundary states of the filter.

    POSITION-WINDOW EXTENSION FOR GNSS AND VISUAL-INERTIAL-ODOMETRY (VIO) FUSION

    公开(公告)号:US20210072409A1

    公开(公告)日:2021-03-11

    申请号:US17083516

    申请日:2020-10-29

    Abstract: Techniques provided herein are directed toward virtually extending an updated set of output positions of a mobile device determined by a VIO by combining a current set of VIO output positions with one or more previous sets of VIO output positions in such a way that ensure all outputs positions among the various combined sets of output positions are consistent. The combined sets can be used for accurate position determination of the mobile device. Moreover, the position determination further may be based on GNSS measurements.

    ROBUST ASSOCIATION OF TRAFFIC SIGNS WITH A MAP

    公开(公告)号:US20200217667A1

    公开(公告)日:2020-07-09

    申请号:US16668596

    申请日:2019-10-30

    Abstract: Techniques provide for accurately matching traffic signs observed in camera images with traffic sign data from 3D maps, which can allow for error correction in a position estimate of a vehicle based on differences in the location of the observed traffic sign and the location of the traffic sign based on 3D map data. Embodiments include preparing the data to allow for comparison between observed and map traffic sign data, conducting the comparison in a 2D frame (e.g., in the frame of the camera image) to make an initial order of proximity of candidate traffic signs in the map traffic sign data to the observed traffic sign, conducting a second comparison in a 3D frame (e.g. the frame of the 3D map) to determine an association based on the closest match, and using the association to perform error correction.

    CARRIER-PHASE SMOOTHING OF CODE-PHASE MEASUREMENTS

    公开(公告)号:US20180067214A1

    公开(公告)日:2018-03-08

    申请号:US15258301

    申请日:2016-09-07

    CPC classification number: G01S19/43 G01S19/29 G01S19/30

    Abstract: An example of a method of determining a position of a device includes: receiving, with a receiver of the device, a signal from a reference emitter; obtaining a code phase measurement of the signal; obtaining a carrier phase measurement of the signal; calculating an intermediate quantity that is a function of the code phase measurement and the carrier phase measurement; calculating a carrier phase smoothed estimate of a code phase of the signal based, at least in part, on a robust aggregation of the intermediate quantity; and determining the position of the device based, at least in part, on the carrier phase smoothed estimate of the code phase.

    LOCATION AND RANGE DETERMINATION USING BROADCAST MESSAGES
    26.
    发明申请
    LOCATION AND RANGE DETERMINATION USING BROADCAST MESSAGES 审中-公开
    使用广播信息的位置和范围确定

    公开(公告)号:US20160277197A1

    公开(公告)日:2016-09-22

    申请号:US14848160

    申请日:2015-09-08

    CPC classification number: H04L12/18 G01S5/0063 G01S5/02 H04W64/00

    Abstract: Disclosed are implementations that include a method, at a mobile device, including receiving multiple broadcast messages transmitted by multiple stationary wireless devices, and obtaining first information relating to each of the multiple broadcast messages, with at least some of the first information being included in the multiple broadcast messages, and second information relating to at least one earlier broadcast communication received by at least one of the multiple stationary wireless devices, prior to transmission of the at least one of the multiple broadcast messages, from at least one other of the multiple stationary wireless devices, with the second information included in the at least one of the multiple broadcast messages. The method also include determining location information for the mobile device based on the first information, the second information, and known positions of at least some of the multiple stationary wireless devices.

    Abstract translation: 公开了包括在移动设备处的方法的实现方式,包括接收由多个固定无线设备发送的多个广播消息,以及获得与多个广播消息中的每一个相关的第一信息,其中至少一些第一信息被包括在 多个广播消息,以及与多个固定无线设备中的至少一个所接收的至少一个较早的广播通信相关的第二信息,在多个广播消息中的至少一个广播消息之间从多个静止无线设备中的至少一个传输 无线设备,其中第二信息包括在多个广播消息中的至少一个中。 该方法还包括基于第一信息,第二信息和多个固定无线设备中的至少一些的已知位置来确定移动设备的位置信息。

    FILTER FOR USE IN TIME-OF-ARRIVAL ESTIMATION IN WIRELESS COMMUNICATIONS
    27.
    发明申请
    FILTER FOR USE IN TIME-OF-ARRIVAL ESTIMATION IN WIRELESS COMMUNICATIONS 审中-公开
    过滤器在无线通信的时间估计中使用

    公开(公告)号:US20160205567A1

    公开(公告)日:2016-07-14

    申请号:US14593920

    申请日:2015-01-09

    CPC classification number: H04B1/1036 H04L1/1692 H04L1/248 H04W56/0055

    Abstract: Apparatus and method are provided for estimating the shortest time of arrival or the shortest round-trip time (RTT) of radio signals between communication devices in a wireless network. Filtering is performed by adaptive filters with suppressed side lobes adjustable in the time domain and widths of main lobes adjustable in the frequency domain to improve detection of signals on the shortest path of arrival or line-of-sight (LOS) path while mitigating the effects signals received from longer paths of arrival or non-line-of-sight (NLOS) paths.

    Abstract translation: 提供了用于估计无线网络中的通信设备之间的最短到达时间或无线电信号的最短往返时间(RTT)的设备和方法。 滤波由自适应滤波器执行,其抑制旁瓣在时域中可调节,并且主波瓣的宽度可在频域中调节,以改善对最短路径或视线(LOS)路径上的信号的检测,同时减轻效应 从更长的到达途径或非视线(NLOS)路径接收的信号。

    OBJECT AIDED LOCALIZATION WITHOUT COMPLETE OBJECT INFORMATION

    公开(公告)号:US20240219184A1

    公开(公告)日:2024-07-04

    申请号:US18502843

    申请日:2023-11-06

    CPC classification number: G01C21/30 G06T7/74 G06T2207/30244 G06T2207/30252

    Abstract: Techniques and systems are provided for localization of an apparatus. For instance, a process can include: obtaining a map of an environment, the map including a map point representing an object in the environment; obtaining image data including the object in the environment, wherein the image data is associated with a camera pose; obtaining point information from the obtained image data, the obtained point information describing two or more points of the object in the obtained image data; determining whether to associate the point information with the map point based, at least in part, on a comparison of the map point and an estimated point, wherein the estimated point is estimated based on the camera pose and point information; and based on the determination to associate the point information with the map point, associating the point information with the map point to localize an apparatus.

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