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EarthCentralBodySlowChangingAxesUpdateInterval Property

Gets or sets the interval, in seconds, on which to recalculate slow-changing relationships between axes.

Namespace:  AGI.Foundation.Celestial
Assembly:  AGI.Foundation.Models (in AGI.Foundation.Models.dll) Version: 19.5.402.0 (19.5.402.0)
public double SlowChangingAxesUpdateInterval { get; set; }

Property Value

Type: Double

A number of factors, including nutation, precession, and pole wander, affect the relationship between the FixedFrame and InertialFrame. However, because the impact of these factors is small, and because they change relatively slowly, it is usually unnecessary to recalculate these parameters for each new input JulianDate. Instead, these values can be calculated once for a "window" of times and reused for all times within that window. This property allows the user to set the size of the window.

By default, a window size of 0 is used, so these parameters are recomputed for every JulianDate. Setting it to 1800 seconds (30 minutes) results in sufficient accuracy for most applications while also yielding much better performance when transforming between reference frames.

See Also