Statistical Quality Control for Kinematic GPS Positioning

Gang Lu

Abstract:	Kinematic GPS positioning is used to achieve accurate, real-time positions and velocities of a moving platform on land, in the air and at sea. In a dynamic environment, however, the deviations or biases from the assumed system and observation models are often significant. This results in a degradation of the accuracy and the reliability of the estimated positions and velocities. Therefore, quality control methods are inevitably needed in a real-time positioning system to insure the system is functioning properly. This paper presents a real-time statistical testing and implementation procedure for use in kinematic GPS positioning, based on the state space two-stage Kalman filter, hypothesis testing and reliability analysis. This procedure aims to detect, identify and correct the common biases such as cycle slips in carrier phases and outliers in phase rates and pseudo-ranges. A software package performing the statistical quality control method along with the kinematic GPS positioning was developed to test this method. The effectiveness of this testing procedure is investigated and verified using data collected in differential mode over a controlled traverse. Appropriate conclusions and recommendations are given at the end.
Published in:	Proceedings of the 4th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1991) September 11 - 13, 1991 Albuquerque, NM
Pages:	903 - 914
Cite this article:	Lu, Gang, "Statistical Quality Control for Kinematic GPS Positioning," Proceedings of the 4th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1991), Albuquerque, NM, September 1991, pp. 903-914.
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