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Proceedings Paper

The mobile LBS positioning solution based on NRTK and Windows Mobile
Author(s): Zhongping Liao; Xuwen Duan; Jingxin Lu; Xiaoyong Yue; Wen Liu; Qianqian He
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Paper Abstract

In order to meet the requirements of Location-based Service (LBS), there are many proposed positioning solutions that may be able to provide LBS support, such as GPS, Mobile Phone Location, RFID, and so on. With the most widely recognized system being the Global Positioning System (GPS) and Windows Mobile 5.0 system characteristics, this paper first provides three kinds method, i.e. invoking Win32 API, using Ports namespace and calling GPS Intermediate Driver, to receive GPS raw data on Windows Mobile devices. Since internet-based GPS VRS RTK workstation can provide real-time streaming of differential GPS corrections. The following text introduces a high precision Net-based RTK (NRTK) mobile positioning solution which is mainly equipped with a Windows Mobile 5.0 device and an Ashtech Z-Xtreme receiver. With it a rover-side (NtripClient) firstly connects to an NtripCaster which is a part of a VRS workstation, via GPRS /CDMA, using the IP and specified listening Port of the Tongji VRS workstation. Then the rover-side transmits NMEA GGA strings after the HTTP request to the NtripCaster. With that the Windows Mobile device continuously receives RTCM data back from the NtripCaster and instantly sends them out into the Ashtech Z-Xtreme receiver. Finally, the Ashtech Z-Xtreme receiver will work out vector solution information of the rover-side. Thus, this paper provides a multimode mobile LBS positioning solution based on NRTK and Windows Mobile 5.0.

Paper Details

Date Published: 2 April 2010
PDF: 4 pages
Proc. SPIE 7651, International Conference on Space Information Technology 2009, 76512W (2 April 2010); doi: 10.1117/12.855432
Show Author Affiliations
Zhongping Liao, Changsha Univ. of Science and Technology (China)
Xuwen Duan, Changsha Univ. of Science and Technology (China)
Jingxin Lu, Changsha Univ. of Science and Technology (China)
Xiaoyong Yue, Changsha Univ. of Science and Technology (China)
Wen Liu, Changsha Univ. of Science and Technology (China)
Qianqian He, Changsha Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 7651:
International Conference on Space Information Technology 2009
Xingrui Ma; Baohua Yang; Ming Li, Editor(s)

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