Combining Inertial Navigation System With GPS Precise Point Positioning: Flight Test Results

A.Q. Le, J.F.M. Lorga

Abstract:	Integrated positioning of an Inertial Navigation System (INS) and standard GPS positioning is widely used as the two systems are complimentary in several respects. However, large biases usually occur in this type of integration. With the availability of various public GPS related products including precise satellite orbits and clocks, and ionosphere maps, a single-frequency, standalone user can determine the position much more precisely in this Precise Point Positioning (PPP) mode. Thanks to this, INS-PPP integration can be realised to achieve higher accuracy, especially useful for aviation applications. In this contribution, a loosely coupled concept between INS and PPP will be presented, followed by the application of the approach in a flight experiment. It will be shown that the improvement by adding carrier phase measurements and INS data can be as high as 50%. The INS can bring about 20% more accurate to the GPS only solution.
Published in:	Proceedings of the 19th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2006) September 26 - 29, 2006 Fort Worth Convention Center Fort Worth, TX
Pages:	3035 - 3042
Cite this article:	Le, A.Q., Lorga, J.F.M., "Combining Inertial Navigation System With GPS Precise Point Positioning: Flight Test Results," Proceedings of the 19th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2006), Fort Worth, TX, September 2006, pp. 3035-3042.
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