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Min Hu, Yongjing Ruan, Huifeng Zhou, Jiahui Xu and Wen Xue
With the increase in satellites in the medium Earth orbit (MEO) region, there should be a focus on orbit safety in the MEO region. A safe orbit disposal strategy is necessary to maintain the sustainability of the MEO region. This paper focuses on long-te...
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Brad Masters, senior project manager, BDS VirCon
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Bing Hua, Xiaosong Wei, Yunhua Wu and Zhiming Chen
The velocity and acceleration of geostationary transfer orbit (GTO) satellites change dramatically and periodically, and the operating area extends from hundreds of kilometers to 36,000 km above the Earth?s surface. This leads to the limitation of naviga...
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Yourui Huang, Jiahao Fu, Shanyong Xu, Tao Han and Yuwen Liu
To improve the positioning accuracy and reliability of autonomous navigation agricultural machinery and reduce the cost of high-precision positioning, an integrated navigation system based on Real-Time Dynamic Kinematic BeiDou Navigation Satellite System...
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Zun Niu, Fugui Guo, Qiangqiang Shuai, Guangchen Li and Bocheng Zhu
The real-time kinematic positioning technique (RTK) and visual?inertial odometry (VIO) are both promising positioning technologies. However, RTK degrades in GNSS-hostile areas, where global navigation satellite system (GNSS) signals are reflected and blo...
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Cheng Ke, Yanning Zheng and Shengli Wang
With the combination of multi-GNSS data, the precise-point positioning (PPP) technique can improve its accuracy, availability and reliability: Inter-system bias (ISB) is the non-negligible parameter in multi-GNSS PPP. To further enhance the performance o...
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Yanxi Yang, Jinguang Jiang and Mingkun Su
The characteristic of the satellite repeat shift time can reflect the status of the satellite operation, and is also one of the key factors of the sidereal filtering multipath correction. Although some methods have been developed to calculate the repeat ...
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Dansong Yue, Shuqi Shang, Kai Feng, Haiqing Wang, Xiaoning He, Zelong Zhao, Ning Zhang, Baiqiang Zuo and Dongwei Wang
Improving the positioning accuracy and stability of a single BDS/INS sensor system in agricultural machinery is important for expanding the application scenarios of agricultural machinery. This paper proposes a navigation and positioning model based on a...
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Luckas Sabioni Lopes
No presente artigo, foram testadas teorias para descrever o comportamento do consumo agregado brasileiro, considerando duas bases dados: uma anual, para o período de 1947 a 2012; e outra trimestral, abrangendo os anos de 1991 a 2014. A abordagem metodoló...
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Jeisson Vélez-Sánchez, Juan David Bastidas-Rodríguez, Carlos Andrés Ramos-Paja, Daniel González Montoya and Luz Adriana Trejos-Grisales
Bypass diodes (BDs) present in photovoltaic (PV) modules are represented by the exponential model, which requires two parameters: the inverse-saturation current (
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Qiuzhao Zhang, Wei Yang, Shubi Zhang and Lihui Yao
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Samet Günay
Pág. 515 - 522
In this study, the parameters of chaos are analyzed for the leading emerging stock markets: Brazil, Russia, India, China, and Turkey (BRIC-T). As chaos has properties such as nonlinearity, sensitivity to initial conditions, and fractality, we performed d...
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Piera Fischione, Davide Pasquali, Daniele Celli, Carmine Di Nucci and Marcello Di Risio
The beach drainage can be included among the soft engineering methods aimed to counteract the shoreline retreat related to the sediment redistribution along the beach profile. The idea that the groundwater table plays a role in the mobilization of the se...
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Daniela V. Borisova, Gergana S. Kostadinova, Georgi S. Petkov, Diyana M. Dermendzhieva and Georgi G. Beev
Municipal green waste (MGW) has significantly increased with the development of urban green areas, and its utilization by composting is a good alternative to solve the problem. This paper presents the results from the quality assessment of two industrial...
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Shulin Zeng, Cuilin Kuang and Wenkun Yu
Modern low-cost electronic devices can achieve high precision for global navigation satellite systems (GNSSs) and related applications. Recently, the pseudo-range and carrier phase have been directly obtained from a smartphone to establish a professional...
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Mahdieh Iranmanesh, Sayyed Abdolmajid JALAEE, Professor of Economics, Shahid Bahonar U, Mohsen ZAYANDERODI
Pág. 282 - 304
In Iran, one of the most important economic problems in recent decades is the phenomenon of inflation. Achieving a stable inflation rate requires the ability to use efficient and effective tools in economic policy-making. Hence, economic policymakers sho...
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