arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1709.01282cs.NIstat.AP
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车载网络中的隐式协同定位

Implicit Cooperative Positioning in Vehicular Networks

Gloria Soatti, Monica Nicoli, Nil Garcia, Benoit Denis, Ronald Raulefs, Henk Wymeersch

摘要:

车辆的绝对定位是以全球导航卫星系统为基础,结合车载传感器和高分辨率地图。在协同智能交通系统(C-ITS)中,定位性能可以通过车辆网络,使车辆能够共享位置相关的信息来增强。本文提出了一种隐式合作定位(ICP)算法,利用车辆到车辆(V2 V)的连接,以创新的方式,避免使用显式的V2 V测量,如测距。在ICP方法中,车辆联合定位周围区域中的非合作物理特征(例如人、交通灯或不活动的汽车),并将其用作公共噪声参考点来改进其位置估计。通过V2 V链接的共识程序,嵌套在一个消息传递算法,以提高车辆定位精度的信息融合感测功能。由于定位不依赖于车辆之间的显式测距信息,因此所提出的ICP方法适合于用现成的车辆通信硬件来实现。该定位算法在不同的交通场景中进行了验证,包括在特征密度和V2 V连接方面具有异构条件的十字路口区域,以及通过使用城市移动性模拟(SUMO)生成交通数据的真实城市区域。性能结果表明,所提出的ICP方法可以显着提高车辆定位精度相比,独立的GNSS,特别是在恶劣的环境中,如在城市峡谷,其中GNSS信号是高度退化或拒绝。

英文摘要:

Absolute positioning of vehicles is based on Global Navigation Satellite Systems (GNSS) combined with on-board sensors and high-resolution maps. In Cooperative Intelligent Transportation Systems (C-ITS), the positioning performance can be augmented by means of vehicular networks that enable vehicles to share location-related information. This paper presents an Implicit Cooperative Positioning (ICP) algorithm that exploits the Vehicle-to-Vehicle (V2V) connectivity in an innovative manner, avoiding the use of explicit V2V measurements such as ranging. In the ICP approach, vehicles jointly localize non-cooperative physical features (such as people, traffic lights or inactive cars) in the surrounding areas, and use them as common noisy reference points to refine their location estimates. Information on sensed features are fused through V2V links by a consensus procedure, nested within a message passing algorithm, to enhance the vehicle localization accuracy. As positioning does not rely on explicit ranging information between vehicles, the proposed ICP method is amenable to implementation with off-the-shelf vehicular communication hardware. The localization algorithm is validated in different traffic scenarios, including a crossroad area with heterogeneous conditions in terms of feature density and V2V connectivity, as well as a real urban area by using Simulation of Urban MObility (SUMO) for traffic data generation. Performance results show that the proposed ICP method can significantly improve the vehicle location accuracy compared to the stand-alone GNSS, especially in harsh environments, such as in urban canyons, where the GNSS signal is highly degraded or denied.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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