Результаты поиска по 'navigation':
Найдено статей: 12
  1. Kurzhanskiy A.A., Kurzhanski A.B.
    Intersection in a smart city
    Computer Research and Modeling, 2018, v. 10, no. 3, pp. 347-358

    Intersections present a very demanding environment for all the parties involved. Challenges arise from complex vehicle trajectories; occasional absence of lane markings to guide vehicles; split phases that prevent determining who has the right of way; invisible vehicle approaches; illegal movements; simultaneous interactions among pedestrians, bicycles and vehicles. Unsurprisingly, most demonstrations of AVs are on freeways; but the full potential of automated vehicles — personalized transit, driverless taxis, delivery vehicles — can only be realized when AVs can sense the intersection environment to efficiently and safely maneuver through intersections.

    AVs are equipped with an array of on-board sensors to interpret and suitably engage with their surroundings. Advanced algorithms utilize data streams from such sensors to support the movement of autonomous vehicles through a wide range of traffic and climatic conditions. However, there exist situations, in which additional information about the upcoming traffic environment would be beneficial to better inform the vehicles’ in-built tracking and navigation algorithms. A potential source for such information is from in-pavement sensors at an intersection that can be used to differentiate between motorized and non-motorized modes and track road user movements and interactions. This type of information, in addition to signal phasing, can be provided to the AV as it approaches an intersection, and incorporated into an improved prior for the probabilistic algorithms used to classify and track movement in the AV’s field of vision.

    This paper is concerned with the situation in which there are objects that are not visible to the AV. The driving context is that of an intersection, and the lack of visibility is due to other vehicles that obstruct the AV’s view, leading to the creation of blind zones. Such obstruction is commonplace in intersections.

    Our objective is:

    1) inform a vehicle crossing the intersection about its potential blind zones;

    2) inform the vehicle about the presence of agents (other vehicles, bicyclists or pedestrians) in those blind zones.

    Keywords: autonomous driving, connected vehicles, connected intersections, blind zones, I2V, DSRC.
    Views (last year): 29.
  2. Dobrynin V.N., Filozova I.A.
    Cataloging technology of information fund
    Computer Research and Modeling, 2015, v. 7, no. 3, pp. 661-673

    The article discusses the approach to the improvement of information processing technology on the basis of logical-semantic network (LSN) Question–Answer–Reaction aimed at formation and support of the catalog service providing efficient search of answers to questions.

    The basis of such a catalog service are semantic links, reflecting the logic of presentation of the author's thoughts within the framework this publication, theme, subject area. Structuring and support of these links will allow working with a field of meanings, providing new opportunities for the study the corps of digital libraries documents. Cataloging of the information fund includes: formation of lexical dictionary; formation of the classification tree for several bases; information fund classification for question–answer topics; formation of the search queries that are adequate classification trees the question–answer; automated search queries on thematic search engines; analysis of the responses to queries; LSN catalog support during the operational phase (updating and refinement of the catalog). The technology is considered for two situations: 1) information fund has already been formed; 2) information fund is missing, you must create it.

    Keywords: information fund, Big Data, information search, pertinence, navigation, search engine, semantic relations, logic-semantic network «Question–Answer–Reaction».
    Views (last year): 3.
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