Map matching method for marching fleet

Abstract

The invention relates to the technical field of traffic geographic information, and provides a map matching method for a marching fleet. The method realizes accurate fleet positioning and tracking. The method comprises the following steps of: 1) arranging a piece of satellite positioning equipment at least at the head vehicle and the tail vehicle of the fleet respectively; 2) acquiring positioning data of the head vehicle and the tail vehicle of the fleet through a satellite navigation positioning system; 3) establishing a search area according to the error of the satellite navigation positioning system, and searching road sections; and 4) matching the positioning points of the head vehicle and the tail vehicle of the fleet to the accurate road sections according to the road conditions ofthe searched road sections by adopting fleet positioning point direct projection-based map matching, road network topology structure and fleet positioning information-based map matching and fleet head vehicle running direction angle and road direction included angle-based map matching, wherein the road sections matched with the positioning points of the head vehicle and the tail vehicle of the fleet are the optimal matched road sections, and the road section between the positioning points of the head vehicle and the tail vehicle of the fleet is the marching position of the fleet.

Description

technical field [0001] The invention relates to the technical field of traffic geographic information, in particular to a map matching method for a traveling fleet. Background technique [0002] With the rapid development of my country's economic construction, when the military or various enterprises and institutions respond to large-scale transportation tasks or perform large-scale rescue and disaster relief emergency tasks, they usually organize their vehicles into convoys to efficiently complete various tasks. . In order for the monitoring center to grasp the overall transportation status of the fleet more accurately and intuitively, it is necessary to use the satellite positioning system to accurately locate it, realize the positioning display of the tracked fleet on the electronic map, and strengthen the real-time scheduling management of the fleet. Due to the different degrees of errors in various satellite positioning technologies and electronic maps, the positioning ...

AI Technical Summary

Problems solved by technology

Because in practical applications, map matching often requires high real-time performance, the closest point estimation algorithm has been widely used because of its simple algorithm and fast operation, but its matching accuracy is low

The map matching algorithm based on D-S evidence theory, fuzzy logic and cost function, etc., due to the increased logic complexity and computational load, compared with the closest point estimation algorithm, although the matching accuracy is higher, the real-time performance is poor, which cannot meet the practical application Require

[0005] The traditional vehicle matching and positioning technology is to perform positioning and matching on a single vehicle. When using this method to perform map matching on multiple vehicles in the fleet, since the positioning point of a single vehicle equipment is displayed, it cannot intuitively show the overall status of the fleet. Positioning status, and there will be overlapping or disordered positions of front and rear vehicles caused by positioning errors; secondly, because the fleet is a whole, using this matching method does not take into account the coordination and scheduling issues within the fleet and between the fleet; in addition, for the fleet When traffic flow is positioned, more positioning terminals will also increase system overhead and implementation complexity, and increase equipment purchase costs

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