Next Article in Journal
DOW-PR DOlphin and Whale Pods Routing Protocol for Underwater Wireless Sensor Networks (UWSNs)
Previous Article in Journal
Cellular-V2X Communications for Platooning: Design and Evaluation
Article Menu
Issue 5 (May) cover image

Export Article

Open AccessArticle
Sensors 2018, 18(5), 1528; https://doi.org/10.3390/s18051528

The First Result of Relative Positioning and Velocity Estimation Based on CAPS

1
Academy of Opto-Electronics, Chinese Academy of Sciences, No.9 Dengzhuang South Road, Haidian District, 100094 Beijing, China
2
School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, No.19A Yuquan Road, Shijingshan District, 100049 Beijing, China
3
State Key Laboratory of Geodesy and Earth’s Dynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, No.340 Xudong Road, Wuchang District, 430077 Wuhan, China
*
Author to whom correspondence should be addressed.
Received: 27 March 2018 / Revised: 10 May 2018 / Accepted: 11 May 2018 / Published: 12 May 2018
(This article belongs to the Section Remote Sensors)
View Full-Text   |   Download PDF [28492 KB, uploaded 12 May 2018]   |  

Abstract

The Chinese Area Positioning System (CAPS) is a new positioning system developed by the Chinese Academy of Sciences based on the communication satellites in geosynchronous orbit. The CAPS has been regarded as a pilot system to test the new technology for the design, construction and update of the BeiDou Navigation Satellite System (BDS). The system structure of CAPS, including the space, ground control station and user segments, is almost like the traditional Global Navigation Satellite Systems (GNSSs), but with the clock on the ground, the navigation signal in C waveband, and different principles of operation. The major difference is that the CAPS navigation signal is first generated at the ground control station, before being transmitted to the satellite in orbit and finally forwarded by the communication satellite transponder to the user. This design moves the clock from the satellite in orbit to the ground. The clock error can therefore be easily controlled and mitigated to improve the positioning accuracy. This paper will present the performance of CAPS-based relative positioning and velocity estimation as assessed in Beijing, China. The numerical results show that, (1) the accuracies of relative positioning, using only code measurements, are 1.25 and 1.8 m in the horizontal and vertical components, respectively; (2) meanwhile, they are about 2.83 and 3.15 cm in static mode and 6.31 and 10.78 cm in kinematic mode, respectively, when using the carrier-phase measurements with ambiguities fixed; and (3) the accuracy of the velocity estimation is about 0.04 and 0.11 m/s in static and kinematic modes, respectively. These results indicate the potential application of CAPS for high-precision positioning and velocity estimation and the availability of a new navigation mode based on communication satellites. View Full-Text
Keywords: Chinese Area Positioning System (CAPS); relative positioning; velocity estimation Chinese Area Positioning System (CAPS); relative positioning; velocity estimation
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Zhao, J.; Li, Z.; Ge, J.; Wang, L.; Wang, N.; Zhou, K.; Yuan, H. The First Result of Relative Positioning and Velocity Estimation Based on CAPS. Sensors 2018, 18, 1528.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top