A method is analyzed that estimates absolute aircraft position and velocity based on time-series of accumulated delta range measurements from Distance Measuring Equipment (DME) ground transponders. This method provides an Alternative Position and Navigation - but not quite Timing - (APNT) system for use in airplanes as a backup to the Global Navigation Satellite System (GNSS). It performs absolute navigation based on relative-change-in-range measurements. These measurements are provided by nearly continuous radio-navigation carrier phase observables. A Square Root Information Extended Kalman Filter (SRIF) is developed for this method, and a corresponding medium-fidelity truth-model simulation is used to evaluate the filter performance in absolute position observability, filter convergence times, and steady state accuracies for representative scenarios. The results show that a steady state accuracy level below 0.025 nautical miles is achievable, and they reveal the potential usefulness of the proposed method as part of the Federal Aviation Administration's APNT program.


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    Title :

    Alternative Position and Navigation based on DME Accumulated Delta Range


    Contributors:


    Publication date :

    2014


    Size :

    10 Seiten, Bilder, Tabellen, 9 Quellen


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English





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