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For the GNSS receiver, when the satellite navigation signal is weak, the traditional tracking accuracy of GNSS receiver tracking loops will decline sharply which will lead to the deterioration of the Carrier frequency error. Aiming at improving the Velocity Determination accuracy of GNSS receiver, we propose the GNSS Precise Velocity Determination Algorithm Based on Chaotic Oscillator. The proposed...
The multipath propagation in the cellular nets can cause large fluctuations of the base stations' (BSs) RSS which detected by the mobile stations (MSs).The movement of mobile stations and the changes of environment will aggravate the fluctuations of RSS. There is a possibility that RSS values appear outliers during the process from its examination by mobile stations to its transfer to the positioning...
With the development of society and economy, the rapid urban sprawl in land use is being witnessed of late in urban districts. As a result, many problems in society and environment have appeared in urban districts, such as population expansion, air pollution, etc. Assessment and inventory on urban sprawl is essential for city planning and sustainable development. The objective of this study was to...
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