نتایج جستجو برای: by geometrical positioning
تعداد نتایج: 7077804 فیلتر نتایج به سال:
This deliverable presents a literature survey of localisation in communication networks. In a first part, use of communication networks for location estimation is presented. Two families of methods do exist: fingerprinting and geometrical techniques. Cooperative positioning is one possible enhancement. In a second part, use of location information to improve radio resource management, specifica...
abstract the influence of cation?? and anion?? interactions on the strength and nature of n…h hydrogen bond has been investigated by quantum chemical calculations in s-triazine…3hf complex. ab initio calculations were performed at mp2/6-311++g(d,p) level of theory. the natural bond orbital (nbo) analysis and the bader’s quantum theory of atoms in molecules (aim) were also used to elucidate t...
Abstract To achieve more accurate measurements of the MS location, it is possible to integrate many kinds of schemes. In this paper we combine time difference of arrival (TDOA) from three base stations (BSs) and angle of arrival (AOA) information at the serving BS to give location estimation of the MS. Based on the non-line-of-sight (NLOS) environments and the knowledge of NLOS error statistics...
Nature of intraphase interaction lies in the aerodynamics of closely-spaced bodies at their common airflow. Any spatial configuration occurs in a big ensemble with occasional particle positioning. Restricting the attention to “close” interactions, it is possible to reduce the problem to pairwise interactions, where only two main types are selected both by geometrical and physical features. From...
This paper presents the conceptual and technical aspects of a system in development that precisely determines athlete’s trajectory through a course. Carrier phase-based (CP-DGPS) positioning represents core of the system, while tri-axial accelerometer and magnetic sensors act as an autonomous aid that offers instantaneous attitude determination and can potentially help when navigating through G...
High power white LEDs are expected to replace the existing lighting technologies in near future which are also suggested for visible light communication (VLC). We proposed an algorithm for high precision indoor positioning using lighting LEDs, VLC and image sensors. In the proposed algorithm, four LEDs transmitted their three-dimensional coordinate information which were received and demodulate...
This paper shows an application of the fuzzy-logic approach to mobile mapping issues, presenting results of fuzzy processing of the C/A-code-based GPS measurements (standalone static positioning), whose accuracy depends essentially on the satellite observation geometry, expressed numerically by the GDOP (Geometrical Dilution Of Precision) factor, and on the Signal-to-Noise Ratio (SNR). A fuzzy ...
The position of the spindle determines the position of the cleavage plane, and is thus crucial for cell division. Although spindle positioning has been extensively studied, the underlying forces ultimately responsible for moving the spindle remain poorly understood. A recent pioneering study by Garzon-Coral et al. uses magnetic tweezers to perform the first direct measurements of the forces inv...
Reliable Bounding Zones and Inconsistency Measures for GPS Positioning using Geometrical Constraints
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