Class GeometryFreeCombination

  • All Implemented Interfaces:
    MeasurementCombination

    public class GeometryFreeCombination
    extends AbstractDualFrequencyCombination
    Geometry-free combination.

    This combination removes the geometry part of the measurement. It can be used to estimate the ionospheric electron content or to detect cycle slips in the carrier phase, as well.

        mGF =  m2 - m1
     
    With:
    • mGF: Geometry-free measurement.
    • m1 : First measurement.
    • m2 : Second measurement.

    Geometry-Free combination is a dual frequency combination. The two measurements shall have different frequencies but they must have the same MeasurementType.

    Since:
    10.1
    Author:
    Bryan Cazabonne
    • Method Detail

      • getCombinedValue

        protected double getCombinedValue​(double obs1,
                                          Frequency f1,
                                          double obs2,
                                          Frequency f2)
        Get the combined observed value of two measurements.
        Specified by:
        getCombinedValue in class AbstractDualFrequencyCombination
        Parameters:
        obs1 - observed value of the first measurement
        f1 - frequency of the first measurement
        obs2 - observed value of the second measurement
        f2 - frequency of the second measurement
        Returns:
        combined observed value
      • getCombinedFrequency

        protected double getCombinedFrequency​(Frequency f1,
                                              Frequency f2)
        Get the combined frequency of two measurements.
        Specified by:
        getCombinedFrequency in class AbstractDualFrequencyCombination
        Parameters:
        f1 - frequency of the first measurement
        f2 - frequency of the second measurement
        Returns:
        combined frequency in MHz