نتایج جستجو برای: positioning
تعداد نتایج: 44976 فیلتر نتایج به سال:
Abstract Background and purpose: Extensive application of x-ray as a diagnostic tool has created a global concern. Repeating a radiograph doubles radiation dose to the patient and staff. It was expected that development of digital facilities could decrease the rate of re-take of radiographs. The aim of this study was to investigate the causes for repeating digital panoramic radiographs. Mat...
With the continuous development of the industrialization process, the countries all over the world gradually appeared lack of agricultural labor force and aging phenomenon, which was especially prominent in developed countries. However the agricultural robot with high operating efficiency, high qualities of work will play an increasingly important role in future agricultural production. Robot n...
The quality and availability of positional information (location, orientation) is a key resource that strongly influences the way in which many systems incorporating spatial information can provide services to their user. In this extended abstract, we discuss a number of issues and ideas on how to cope with low-quality positional information, how to improve that quality and how integrating qual...
In order to provide the seamless navigation and positioning services for indoor environments, an indoor location based service (LBS) test bed is developed to integrate the indoor positioning system and the indoor three-dimensional (3D) geographic information system (GIS). A wireless sensor network (WSN) is used in the developed indoor positioning system. Considering the power consumption, in th...
Using mobile smart devices to provide urban location-based services (LBS) with sub-meter-level accuracy (around 0.5 m) is a major application field for future global navigation satellite system (GNSS) development. Real-time kinematic (RTK) positioning, which is a widely used GNSS-based positioning approach, can improve the accuracy from about 10-20 m (achieved by the standard positioning servic...
Recent advances in measurement systems and machine tools require positioning systems that combine high stiffness with a high positioning accuracy. Moreover, a high positioning speed is favourable. Current solutions of multi-DOF positioning systems are often based on a stacked construction of linear systems consisting of an electromechanical drive, a transmission and a linear guiding system. Due...
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