Smart Device-Supported BDS-GNSS Real-Time Kinematic Positioning for Sub-Meter-Level Accuracy in Urban Location-Based ServicesReport as inadecuate


Smart Device-Supported BDS-GNSS Real-Time Kinematic Positioning for Sub-Meter-Level Accuracy in Urban Location-Based Services


Smart Device-Supported BDS-GNSS Real-Time Kinematic Positioning for Sub-Meter-Level Accuracy in Urban Location-Based Services - Download this document for free, or read online. Document in PDF available to download.

1

Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100094, China

2

Key Laboratory for Urban Geomatics of National Administration of Surveying, Mapping and Geoinformation, Beijing 100044, China

3

University of Chinese Academy of Sciences, Beijing 100049, China





*

Authors to whom correspondence should be addressed.



Academic Editor: Assefa M. Melesse

Abstract Using mobile smart devices to provide urban location-based services LBS with sub-meter-level accuracy around 0.5 m is a major application field for future global navigation satellite system GNSS development. Real-time kinematic RTK positioning, which is a widely used GNSS-based positioning approach, can improve the accuracy from about 10–20 m achieved by the standard positioning services to about 3–5 cm based on the geodetic receivers. In using the smart devices to achieve positioning with sub-meter-level accuracy, a feasible solution of combining the low-cost GNSS module and the smart device is proposed in this work and a user-side GNSS RTK positioning software was developed from scratch based on the Android platform. Its real-time positioning performance was validated by BeiDou Navigation Satellite System-Global Positioning System BDS-GPS combined RTK positioning under the conditions of a static and kinematic the velocity of the rover was 50–80 km-h mode in a real urban environment with a SAMSUNG Galaxy A7 smartphone. The results show that the fixed-rates of ambiguity resolution the proportion of epochs of ambiguities fixed for BDS-GPS combined RTK in the static and kinematic tests were about 97% and 90%, respectively, and the average positioning accuracies RMS were better than 0.15 m horizontal and 0.25 m vertical for the static test, and 0.30 m horizontal and 0.45 m vertical for the kinematic test. View Full-Text

Keywords: global navigation satellite system GNSS; BeiDou navigation satellite system BDS; real-time kinematic RTK; smart devices; location-based services LBS global navigation satellite system GNSS; BeiDou navigation satellite system BDS; real-time kinematic RTK; smart devices; location-based services LBS





Author: Liang Wang 1,3,* , Zishen Li 1,2,* , Jiaojiao Zhao 1,3, Kai Zhou 1, Zhiyu Wang 1,3 and Hong Yuan 1

Source: http://mdpi.com/



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