نتایج جستجو برای: positioning performance
تعداد نتایج: 1088698 فیلتر نتایج به سال:
A new position estimation method by using the signals from two automatic identification system (AIS) stations is proposed in this paper. The time of arrival (TOA) method is enhanced with the displacement correction, so that the vessel's position can be determined even for the situation where it can receive the signals from only two AIS base stations. Its implementation scheme based on the mathe...
For the majority of applications that use positioning information, solutions from Global Navigation Satellite Systems (GNSS) can easily meet the accuracy, availability and reliability required. This assumes that the GNSS receiver is always operating in an environment that offers clear sky visibility. However, for a growing number of location based services and system, operation in urban or indo...
Precise point positioning (PPP) technology is one of the core technologies in field GNSS high-precision positioning. It used widely because it can realize centimeter-level outdoor environments by using only a single receiver. However, its convergence time-consuming, particularly urban areas where satellite occlusion more severe. A combined BeiDou Navigation Satellite System (BDS) and fifth gene...
Position information is often one of the key requirements for a wireless sensor network (WSN) to function as intended. Due to drawbacks in using GPS or having to manually setting sensor positions, extracting the position information by means of the network itself has been extensively studied in the literature. In this approach, it is commonly assumed that there are a few sensor nodes with known...
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