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The prediction of pedestrian movements, here referred as intention, is important to improve the autonomous vehicles' safety systems. Recognize it correctly helps to avoid traffic accidents, specially on low visibility areas, non-line-of-sight or hiding. This paper analyzes the use of movement information provided by an accelerometer carried by pedestrians. With real data extracted from a real experiment,...
This work present an circularly polarized L Band antenna for terrestrial satellite observation services. The design is based on two crossed dipoles fed by a coaxial cable, and a flat reflector to improve the characteristics of the radiation pattern. The dipoles are implemented on PCB and the assembly is designed considering the weight and size constraints imposed by aerospace technology. Simulation...
Advanced Driver Assistance Systems (ADAS) are a result of many years of research with the main motivation of reducing the amount and the severity of traffic accidents. The use of cameras is now crucial for many of these systems, such as Lane Departure Warning Systems (LDWS). This paper proposes a method to estimate in advance the change of curvature of a road through vanishing points computed from...
A key aspect to improve the operating range in the manufacture of tags for UHF RFID systems is to achieve an effective adaptation between the impedance of antenna and chip. Due to the characteristics of the communication between reader and tag, UHF RFID integrated circuits present two operational states which have different impedances. Integrated circuits manufacturers only publish data about one...
The use of simulators on Intelligent Transportation Systems allows to recreate transit situations from real data; evaluation of algorithms without put at risk the people and assets; and analyze driver behavior on controlled experimental situations. This work shows the development of a simulator from a virtualized environment, using strategies of image processing, and a game engine which offer support...
Vision is one of the main sources of information for today driver assistance systems (DAS). Some DAS functionalities are lane departure warning, driver attention monitoring and automatic vehicle control, among others. Although visual perception systems have demonstrated great progress, some challenges still remain unresolved. One of these problems is the detection in an image of road topology changes...
An estimation filter is presented based on the particle filter framework, which is suitable for detection of rare events- applications in sensor networks. This application has the property of low power consumption and implies low computation and RF transmission capabilities. For this reason a particle filter is implemented in each node, without the re-sampling stage; only bounds on the particles with...
This work presents real time implementation algorithms of Simultaneous Localization and Map Building (SLAM) with emphasis to outdoor land vehicle applications in large environments. It presents the problematic of outdoors navigation in areas with combination of feature and featureless regions. The aspect of feature detection and validation is investigated to reliably detect the predominant features...
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