Inertial Sensor Enhanced Mobile RTK Solution Using Low-Cost Assisted GPS Receivers and Internet-Enabled Cellular Phones

K. Alanen, L. Wirola, J. Kappi and J. Syrjarinne

Abstract:	Location-based services are one of the biggest drivers for integrating positioning capability into mobile phones. The accuracy requirements are constantly tightening. In particular, location-based games and features such as “friend finder” sometimes require better accuracy than that which is achievable with state-of-the-art A-GPS. The concept of Real-Time Kinematics (RTK) with GPS receivers is well known. Until now, RTK receivers have been very expensive and have been mainly used in geodesy and surveying applications. This paper describes a solution, called Mobile RTK (mRTK), which utilizes single-band low-cost assisted-GPS receivers, inertial sensors and cellular link for high-accuracy positioning. The protocol used in mRTK is designed to be suitable for cellular use and for various positioning applications such as relative positioning between two or more GPS-enabled cellular terminals and absolute positioning of GPS-enabled cellular terminals using surveyed position information. The paper will describe the mRTK solution in greater depth focusing on the aspects of terminal software implementation and especially on the aspects of server implementation including the proposed protocol and the special requirements and features in the protocol design. The paper will also describe some testing results from the demonstration devices and the test network.
Published in:	Proceedings of IEEE/ION PLANS 2006 April 25 - 27, 2006 Loews Coronado Resort Hotel San Diego, CA
Pages:	920 - 926
Cite this article:	Alanen, K., Wirola, L., Kappi, J., Syrjarinne, J., "Inertial Sensor Enhanced Mobile RTK Solution Using Low-Cost Assisted GPS Receivers and Internet-Enabled Cellular Phones," Proceedings of IEEE/ION PLANS 2006, San Diego, CA, April 2006, pp. 920-926. https://doi.org/10.1109/PLANS.2006.1650692
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