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Method and system for adapting a navigation system

  • US 10,378,901 B2
  • Filed: 12/09/2016
  • Issued: 08/13/2019
  • Est. Priority Date: 06/11/2014
  • Status: Active Grant
First Claim
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1. A method for adapting a navigation system in a vehicle, the method comprising:

  • capturing measured values of navigation data from a base system and from at least one correction system, wherein the measured values include error values which describe discrepancies of the measured values from the navigation data, wherein the measured values include a speed and acceleration of the vehicle and the rotation rate of a motor supported by the vehicle;

    weighting of the measured values of the at least one correction system compared to the measured values of the base system;

    determining a stochastic noise model based on the weighting of the measured values, the stochastic noise model includes parameters that weigh the measured values according to measured noise associated with each measured value against the respective measured values;

    adjusting the parameters of the stochastic noise model based on a capture uncertainty of the measured value of the at least one correction system based on one of a characteristic curve and a characteristic family;

    determining the characteristic curve and the characteristic family by one of theoretical modeling, a series of measurements and a trial series, wherein the characteristic curve and the characteristic family describe a dependence of the capture uncertainty on influences acting on the navigation system;

    detecting at least one of the error values of the measured values of the base system based on the measured values of the at least one correction system; and

    outputting corrected measured values to one or more systems of the motor vehicle, the corrected measured values based on the stochastic noise model and the at least one of the error values.

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