Precise Point Positioning with the BeiDou Navigation  Satellite System

Li, Min; Qu, Lizhong; Zhao, Qile; Guo, Jing; Su, Xing; Li, Xiaotao

doi:10.3390/s140100927

Cited by 123 publications

(60 citation statements)

References 19 publications

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“…In particular, the results that were obtained by processing the data generated by integrating the GPS and BeiDou systems were reported recently (Zhao et al 2013;Li et al 2014). Research conducted to improve the visibility and availability of satellites has also been performed in parallel as the number of navigation satellites increase (Ji et al 2013;Lee & Jee 2014).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Point Positioning Using the Global Positioning System and the Quasi-Zenith Satellite System as Measured from South Korea

Choi¹,

Cho²,

Cho³

2015

Journal of Astronomy and Space Sciences

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Section: Introductionmentioning

confidence: 99%

Evaluation of Point Positioning Using the Global Positioning System and the Quasi-Zenith Satellite System as Measured from South Korea

Choi¹,

Cho²,

Cho³

2015

Journal of Astronomy and Space Sciences

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“…In outdoor environments, people have adopted Global Navigation Satellite Systems (GNSSs) such as the Global Positioning System (GPS) and BeiDou System to conduct the positioning [1][2][3]. However, these systems fail to work in many indoor or underground environments due to the fact that the signal from the satellites is generally blocked by the buildings or ground.…”

Section: Introductionmentioning

confidence: 99%

WIPP: Wi-Fi Compass for Indoor Passive Positioning with Decimeter Accuracy

et al. 2016

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Abstract:In recent decades, the proliferation of smart phones, tablets, and wireless networks has fostered a growing interest in indoor passive positioning. The Wi-Fi-based passive positioning systems can provide Location-Based Services (LBSs) to the third party such as market and security departments. Most of the existing systems are based on the Receive Signal Strength Indication (RSSI) information, which are generally time-consuming and susceptible to environmental change. To overcome this problem, we propose the Wi-Fi compass for indoor passive positioning system (WIPP), an Angle of Arrival (AOA) based passive positioning system using the existing commodity Wi-Fi network. In this paper, we first propose a new algorithm for the joint estimation of AOA and Time of Arrival (TOA) measurements based on the fine-grained Channel State Information (CSI), which is collected by an off-the-shelf Wi-Fi device equipped with only three antennas. Second, we use the affinity propagation clustering algorithm to identify the direct signal path from the target to each Wi-Fi Access Point (AP). Finally, we deploy the WIPP in an actual indoor environment to conduct the performance comparison with the well-known radio-frequency (RF) based system for locating and tracking users inside buildings (RADAR), as well as the conventional passive positioning system using the AOA solely. The experimental results show that the WIPP is able to achieve the median positioning error 0.7 m, which is much lower than the ones by the RADAR system and the conventional system using the AOA solely.

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“…Some articles have introduced much information related to this field, and most studies were conducted before formal operation began in the Asian region. [23][24][25][26] By analyzing the results of these two indicators, we can conclude the accuracy of satellite positioning results. The gap of C06 decreases with elevation and B1 C/N 0 is close to B2 above 55 degrees, even stronger than B2.…”

Section: Quality Analysis Of Gps/beidou Measurementsmentioning

confidence: 99%

Evaluation of GPS/BeiDou Integration Positioning Performance

Zhang

Liu

et al. 2015

Trans. Japan Soc. Aero. S Sci.

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As a new global navigation system, BeiDou has formally been in operation in the Asian region since December 27, 2012. To evaluate its positioning performance, several days' observation data were collected using a global positioning system (GPS)/BeiDou receiver in Shanghai. In this paper, the constellation and signals of BeiDou are first reviewed. Carrier-to-noise density ratio (C/N 0 ) and multipath combinations are analyzed, then multipath errors of GPS satellites and BeiDou satellites were compared in terms of elevation angle. A positioning performance comparison of three scenarios was conducted using three indicators including number of visible satellites (NVS), position dilution of precision (PDOP), and accuracy of positioning. All positioning results were solved using a single-point positioning mode. After six months of adjustment, comparison of the positioning performance before BeiDou began providing regional services, there were some significant improvements in performance. The accuracy requirements published before formal operation, in which positioning accuracy is less than 10 m, was met. The results show that the integration system has a large NVS, low PDOP value, and a high level of accuracy and precision. The positioning performance can be improved after using BeiDou, especially under the conditions of urban environment.

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Precise Point Positioning with the BeiDou Navigation Satellite System

Cited by 123 publications

References 19 publications

Evaluation of Point Positioning Using the Global Positioning System and the Quasi-Zenith Satellite System as Measured from South Korea

Evaluation of Point Positioning Using the Global Positioning System and the Quasi-Zenith Satellite System as Measured from South Korea

WIPP: Wi-Fi Compass for Indoor Passive Positioning with Decimeter Accuracy

Evaluation of GPS/BeiDou Integration Positioning Performance

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