// Create a simple LineOfSightOperator for a ground based radar system
public static LineOfSightOperator createSimpleLineOfSightOperator(
    Operator elevationInput, Point sensorPositionWgs84LatLong)
{
    // Create a new LineOfSightOperator
    LineOfSightOperator newLineOfSightOperator = new LineOfSightOperator();

    // Set the elevation input in the new LineOfSightOperator
    newLineOfSightOperator.setElevationInput(elevationInput);

    // Create a new MemoryDataSet for the observer feature
    MemoryDataSet observerDataSet = new MemoryDataSet(Crs.getWgs84LongLat());

    // Add the MemoryDataSet as ObserverInput to the new LineOfSightOperator
    newLineOfSightOperator.setObserverInput(new ReadOperator(observerDataSet));

    // Create a new point Feature at the given position
    Feature observerFeature = new Feature(
        new PointGeometry(sensorPositionWgs84LatLong), Crs.getWgs84LongLat());

    // Add the observer feature to the MemoryDataSet
    Guard guard = new Guard(observerDataSet);
    try
    {
        observerDataSet.insert(observerFeature);
    }
    finally
    {
        guard.dispose();
    }

    // Set the MaxDistance to 20km 
    newLineOfSightOperator.setMaxDistance(new DirectDoubleAttributeVariable(20000.0));

    // Set the ObserverHeight to 50m
    newLineOfSightOperator.setSensorHeight(new DirectDoubleAttributeVariable(50.0));

    // Return the created LineOfSightOperator
    return newLineOfSightOperator;
}

// Create a LineOfSightOperator looking forward and backward for a Airborne 
// at the given position
public static LineOfSightOperator CreateAirborneLineOfSightOperator(
    Operator elevationInput, Point sensorPositionWgs84LatLong)
{
    // Create a new LineOfSightOperator
    LineOfSightOperator newLineOfSightOperator = new LineOfSightOperator();

    // Set the elevation input in the new LineOfSightOperator
    newLineOfSightOperator.setElevationInput(elevationInput);

    // Create a new MemoryDataSet for the observer feature
    MemoryDataSet observerDataSet = new MemoryDataSet(Crs.getWgs84LongLat());

    // Add the MemoryDataSet as ObserverInput to the new LineOfSightOperator
    newLineOfSightOperator.setObserverInput(new ReadOperator(observerDataSet));

    // Create a new point Feature at the given position
    Feature observerFeature = new Feature(
        new PointGeometry(sensorPositionWgs84LatLong), Crs.getWgs84LongLat());

    // Add the observer feature to the MemoryDataSet
    Guard guard = new Guard(observerDataSet);
    try
    {
        observerDataSet.insert(observerFeature);        
    }
    finally 
    {
        guard.dispose();
    }

    // Set the CarrierType to airborne
    newLineOfSightOperator.setCarrierType(
        new DirectCarrierTypeAttributeVariable(CarrierType.AIRBORNE));

    // Set the DistanceVariation to PhasedArray
    newLineOfSightOperator.setDistanceVariation(
        new DirectDistanceVariationAttributeVariable(DistanceVariation.PHASEDARRAY));

    // Set the MaxDistanceType to ThreeDimensional
    newLineOfSightOperator.setMaxDistanceType(
        new DirectDistanceTypeAttributeVariable(DistanceType.THREEDIMENSIONAL));

    // Set the PictureWidth to 120 degrees
    newLineOfSightOperator.setPictureWidth(new DirectDoubleAttributeVariable(120.0));

    // Set the PictureHeight to 40 degrees
    newLineOfSightOperator.setPictureHeight(new DirectDoubleAttributeVariable(40.0));

    // Set the PictureElevation to -45 degrees. This will define the pitch of the observer
    newLineOfSightOperator.setPictureElevation(new DirectDoubleAttributeVariable(-45.0));

    // Set the PictureDirection to 90 degrees.
    newLineOfSightOperator.setPictureDirection(new DirectDoubleAttributeVariable(90.0));

    // Set SecondPictureBackwards to true. The observer looks also backwards
    newLineOfSightOperator.setSecondPictureBackwards(new DirectBoolAttributeVariable(true));

    // Set the ObserverHightType to AboveGround
    newLineOfSightOperator.setObserverHeightType(
        new DirectHeightTypeAttributeVariable(HeightType.ABOVEGROUND));

    // Set the MinVisibilityHeightType to AboveGround
    newLineOfSightOperator.setMinVisibilityHeightType(
        new DirectHeightTypeAttributeVariable(HeightType.ABOVEGROUND));

    // Set the MaxDistance to 20km 
    newLineOfSightOperator.setMaxDistance(new DirectDoubleAttributeVariable(20000.0));

    // Set the VerticalRotationAxis to false, 
    // then the globe axis is tilted so that the ray through the center of the
    // sensor lobe goes through the globe equator, and the globe axis is in the 
    // same vertical plane as that ray.
    newLineOfSightOperator.setVerticalRotationAxis(new DirectBoolAttributeVariable(false));

    // Return the created LineOfSightOperator
    return newLineOfSightOperator;
}