Inertially Aided Precise Point Positioning

E-H. Shin, B. Scherzinger

Abstract:	Precise point positioning (PPP) can provide decimeterlevel accuracy once the floated ambiguities are converged. A tightly-coupled integration of PPP and an inertial navigation system (INS) has been developed at Applanix for real-time and post-processing applications. This algorithm is referred to as inertially-aided PPP (IAPPP). The objective of this paper is to demonstrate significantly improved robustness of IAPPP over a loosely-coupled PPP (LCPPP) algorithm during multiple GPS signal outages. The forward-in-time Kalman filter processed results are compared to properly characterize real-time performance. When the GPS outages are 30 seconds or less, IAPPP can maintain the expected PPP decimeter level accuracy. On the other hand, LCPPP exhibited meter level accuracy in all GPS outages longer than 10 seconds. The test results clearly show that IAPPP can provide more robust positioning accuracy under various GNSS outage scenarios.
Published in:	Proceedings of the 22nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2009) September 22 - 25, 2009 Savannah International Convention Center Savannah, GA
Pages:	1892 - 1897
Cite this article:	Shin, E-H., Scherzinger, B., "Inertially Aided Precise Point Positioning," Proceedings of the 22nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2009), Savannah, GA, September 2009, pp. 1892-1897.
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