Package org.orekit.gnss

Class DOPComputer

java.lang.Object
org.orekit.gnss.DOPComputer
public class DOPComputer extends Object
This class aims at computing the dilution of precision.
Since:
8.0
Author:
Pascal Parraud
See Also:

  • Field Details

    • DOP_MIN_ELEVATION

      public static final double DOP_MIN_ELEVATION
      Minimum elevation : 0°.
      See Also:

  • Method Details

    • create

      public static DOPComputer create(OneAxisEllipsoid shape, GeodeticPoint location)
      Creates a DOP computer for one location.

      A minimum elevation of 0° is taken into account to compute visibility between the location and the GNSS spacecrafts.

      Parameters:
      shape - the body shape on which the location is defined
      location - the point of interest
      Returns:
      a configured DOP computer

    • withMinElevation

      public DOPComputer withMinElevation(double newMinElevation)
      Set the minimum elevation.

      This will override an elevation mask if it has been configured as such previously.

      Parameters:
      newMinElevation - minimum elevation for visibility (rad)
      Returns:
      a new DOP computer with updated configuration (the instance is not changed)
      See Also:

    • withElevationMask

      public DOPComputer withElevationMask(ElevationMask newElevationMask)
      Set the elevation mask.

      This will override the min elevation if it has been configured as such previously.

      Parameters:
      newElevationMask - elevation mask to use for the computation
      Returns:
      a new detector with updated configuration (the instance is not changed)
      See Also:

    • compute

      public DOP compute(AbsoluteDate date, List<Propagator> gnss)
      Compute the DOP at a given date for a set of GNSS spacecrafts.

      Four GNSS spacecraft at least are needed to compute the DOP. If less than 4 propagators are provided, an exception will be thrown. If less than 4 spacecrafts are visible at the date, all DOP values will be set to NaN.

      Parameters:
      date - the computation date
      gnss - the propagators for GNSS spacecraft involved in the DOP computation
      Returns:
      the DOP at the location

    • getMinElevation

      public double getMinElevation()
      Get the minimum elevation.
      Returns:
      the minimum elevation (rad)

    • getElevationMask

      public ElevationMask getElevationMask()
      Get the elevation mask.
      Returns:
      the elevation mask