Track deviation correcting method and apparatus for floating vehicle
A floating car and trajectory technology, applied in the field of intelligent transportation, can solve the problems of inaccurate matching of road sections and large errors, and achieve the effect of increasing accuracy and reducing errors
Active Publication Date: 2017-03-01
方正国际软件(北京)有限公司 +1
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[0005] The embodiment of the present invention provides a method and device for correcting the trajectory of a floating car to solve the problem of inaccurate road section matching and large errors in the prior art
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[0047] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments . Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0048] The floating car is a drivable vehicle, which can collect different real-time Travel information. In the embodiment of the present invention, the vehicle-mounted equipment can collect information such as the time, position (such as longitude and latitude coordinates, etc.), direction, and speed of the floating car currently traveling based on GPS and / or data collection technologies such as base station positioning systems, and the v...
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The invention relates to the field of smart traffic and discloses a track deviation correcting method and apparatus for a floating vehicle. The method includes the steps of obtaining N sampling point information of the floating vehicle, wherein the sampling point information contains position information of the sampling point, azimuth information of the sampling point and measurement error of the sampling point, determining the error scope of the measurement error, determining road sections in the error scope as road sections to be matched with the measuring position of the N sampling point as the center, determining a matching road segment of the N sampling point based on the distance between the measuring position of N sampling point to each road section to be matched and the difference between the azimuth angle of the N sampling point and the azimuth angle of each road section to be matched, and taking the projection of the measuring position of N sampling point on the matching road segment as the corrected position of the N sampling point of the floating vehicle. The track deviation correcting method and apparatus solve the problems of mismatching of the road segment and great error is in the prior art.
Description
technical field [0001] The invention relates to the field of intelligent transportation, in particular to a method and device for correcting the trajectory of a floating car. Background technique [0002] Floating car technology is one of the advanced technical means used in the international intelligent transportation system to obtain road traffic information in recent years. The basic principle is: according to the vehicle position, direction and speed information regularly recorded by the floating vehicle equipped with the vehicle-mounted global positioning system during its driving process, the application of map matching, path estimation and other related calculation models and algorithms is used for processing, so that the position of the floating vehicle The data is associated with urban roads in time and space, and finally traffic congestion information such as the vehicle speed of the roads that the floating car passes and the travel time of the roads are obtained. ...
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Inventor 甄冲石泽平王生汪利宝周大良
Owner 方正国际软件(北京)有限公司