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Having the advantages such as non-destructivity and high precision, the ground penetrating radar (GPR) has been widely used in the quality control of highway engineering. But the post processing of the GPR signal still needs to be further studied. In this paper, the author applies the least square deconvolution to ground penetrating radar signal post-processing, presents its relevant theory and method,...
With the rapid development of expressway construction, environmental effects have also increased protrudes out from eco-environment, land utilization, hydrogeology and sound environment. Based on ecological footprint model, this paper analyses and compares the change of the per capita ecological footprint and biological capacity before and after constructing Yongdeng-Gulang (here-in-after, Y-G) expressway...
In this paper, we design a bio-inspired patrolling algorithm based on digital pheromone. As events have different importance, we refer to them as having different priorities. In our patrolling schemes, robots efficiently handle as many high priority events as possible. Inspired by the pheromone-based communication among ants, we introduce the concept of digital pheromones and propose a digital pheromone-based...
The experimental platform (vehicle infrastructure integration) established is introduced. As to provide valuable information for driver and prevent pedestrian-to-vehicle collision and guarantee the pedestrian to be safe, a method which detects pedestrian, acquires the position of pedestrian and prejudges the potential pedestrian-to-vehicle conflict based on VII is presented. The experiment and simulation...
This paper introduces an innovation concept of "generalized yellow light dilemma zone" (GDZ), because that conventional concept of dilemma zone is not suitable for intersection collision avoidance system (ICAS) strategy. In contrast to the conventional dilemma zone defined at the onset time of yellow light, generalized yellow light dilemma zone involved the situation during yellow interval...
In order to effectively guarantee the pedestrian safety, coordinate relations between the image pixels and actual position of road is founded based on zebra crossing feature. A method which detects pedestrian and predicts the position of pedestrian in real-time for use is presented based on Kalman predictor. By this method, pedestrian-vehicle collision point can be prejudged and pedestrian information...
Different from the traditional road model, the model of road based on GML is adapt to the management fields on municipal road infrastructure. This article analyses the characteristic of the composing elements (road infrastructure) of road and the requirement of management.The author builds the spatial-attribute integration model for road infrastructure based on the GML Schema. At the end the author...
Signalized intersections with weaving segment upstream are very common on urban roads. Weaving segment determines the arrival rate of the approach, and the operational condition of itself is affected by the approach queue accumulated at the same time. According to the character of arrival and departure of vehicles, the impact of weaving segment on the signalized intersections capacity is analyzed...
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