Package org.orekit.estimation.measurements.gnss

Class MelbourneWubbenaCombination

java.lang.Object
org.orekit.estimation.measurements.gnss.MelbourneWubbenaCombination
All Implemented Interfaces:
MeasurementCombination
public class MelbourneWubbenaCombination extends Object implements MeasurementCombination
Melbourne-Wübbena combination.

This combination allows, thanks to the wide-lane combination, a larger wavelength than each signal individually. Moreover, the measurement noise is reduced by the narrow-lane combination of code measurements. 

    mMW =  ΦWL- RNL
    mMW =  λWL * NWL+ b + ε
With:
  • mMW : Melbourne-Wübbena measurement.
  • ΦWL : Wide-Lane phase measurement.
  • RNL : Narrow-Lane code measurement.
  • λWL : Wide-Lane wavelength.
  • NWL : Wide-Lane ambiguity (Nf1 - Nf2).
  • b : Satellite and receiver instrumental delays.
  • ε : Measurement noise.

Narrow-Lane and Wide-Lane combinations shall be performed with the same pair of frequencies.

Since:
10.1
Author:
Bryan Cazabonne
See Also:
  • "Detector based in code and carrier phase data: The Melbourne-Wübbena combination, J. Sanz Subirana, J.M. Juan Zornoza and M. Hernández-Pajares, 2011"