Improving user Experience in Assisted Land Navigation using Sub-optimal Sensor Configuration Installed on a Cell Phone

Goutam Dutta, Hemanth Mullur, June Chul Roh, Sandeep Rao, Srinath Hosur

Abstract:	With GNSS based solutions being realized on cell phones, it is important to develop navigational sensor based solutions that can be integrated on cell phones. The key aspects of sensor selection for cell phone platforms are area, cost and power consumption. MEMS accelerometers with their low power, small area and low cost have the potential to enable INS on cell phones. Classical INS using accelerometer and gyros is not a viable solution in this space since gyros are not yet attractive on any of the three parameters mentioned above. E-compass is an attractive solution that can potentially replace gyros on cell phone based applications. A three axes magnetometer and three axes accelerometer is a potential cost effective, small area and low power IMU solution that can be easily implemented on a cell phone. In the present work we present a set of IMU configuration of three orthogonal axes accelerometer and three axes ecompass that have proved effective in complementing GNSS performance both in vehicular as well as pedestrian applications. The configuration is sub-optimal and won’t track full three dimensional dynamics. However, these configurations can be used judiciously in land applications such as vehicle and pedestrian navigation to better user experience.
Published in:	Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008) September 16 - 19, 2008 Savannah International Convention Center Savannah, GA
Pages:	1371 - 1376
Cite this article:	Dutta, Goutam, Mullur, Hemanth, Roh, June Chul, Rao, Sandeep, Hosur, Srinath, "Improving user Experience in Assisted Land Navigation using Sub-optimal Sensor Configuration Installed on a Cell Phone," Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008), Savannah, GA, September 2008, pp. 1371-1376.
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