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Articles

1996: Vol. LXXIII, No. 1

Test Results of DIA: A Real-Time Adaptive Integrity Monitoring Procedure, Used in an Integrated Naviation System

Soumise
juillet 30, 2015
Publié-e
2015-05-21

Résumé

A practical method for real-time kinematic position determination and Quality Control (QC) in (integrated) navigation systems is presented as a combination of an extended iterated Kalm an Filter (KF) and the Detection, Identification and Adaptation (DIA) testing procedure for integrity monitoring as developed by the Delft University of Technology. DIA is a real-time recursive QC tool which can be used on multi-sensor integration. There will be no degradation in the number of sensors used by the navigation system, when applying the DIA theory to possible arising errors. Test results are presented of the KF&DIA procedure, which was implemented in the software of the survey vessel HNIMS BUYSKES of the Royal Netherlands Navy. The results of DIA are evaluated by comparing the position quality (precision and reliability) of the KF&DIA procedure with the solution of a standard integrated Least Squares (LS) position with F-test and w-test (DataSnooping, DS) as QC-tools. This analysis shows that the use of a Ka lm a n Filter in combination with DIA gives more precise results (factor = 1½) when compared to the Least Squares method with F-test and w-test. The reliability also increases, especially in cases where multiple errors in observations at one epoch occur. In general the quality of the KF&DIA solution is less influenced by errors than the LS&DS solution.