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IO Aerospace

Sites

Sites¶

Site¶

Ground-based observation or tracking site.

Constructors¶

Constructor	Description
`Site(int id, string name, CelestialBody body)`	Create from SPICE data
`Site(int id, string name, CelestialBody body, Planetodetic coordinates)`	Create with explicit coordinates

Properties¶

Property	Description
`Id`	Site identifier
`Name`	Site name
`NaifId`	NAIF ID (bodyId * 1000 + siteId)
`CelestialBody`	Parent body

Methods¶

Method	Description
`GetHorizontalCoordinates(Time, ILocalizable, Aberration)`	Get azimuth, elevation, range
`GetEphemeris(Time, ILocalizable, Frame, Aberration)`	Get site state relative to observer
`AngularSeparation(Time, ILocalizable, ILocalizable, Aberration)`	Angular separation
`FindWindowsOnDistanceConstraint(...)`	Find distance constraint windows
`FindWindowsOnOccultationConstraint(...)`	Find occultation windows
`FindWindowsOnIlluminationConstraint(...)`	Find illumination windows
`FindDayWindows(Window, double)`	Find daylight windows

Example¶

var goldstone = new Site(13, "DSS-13", earth);
var mySite = new Site(100, "MySite", earth,
    new Planetodetic(-117.0 * Constants.Deg2Rad, 34.0 * Constants.Deg2Rad, 1000.0));
var horizontal = mySite.GetHorizontalCoordinates(epoch, moon, Aberration.LT);

LaunchSite¶

Specialized site for launch operations.

| Constructor | LaunchSite(int id, string name, CelestialBody body, IEnumerable<AzimuthRange> allowedAzimuths) | | Method | IsAzimuthAllowed(double azimuth) — check if launch azimuth is allowed |

Coordinates¶

Planetodetic¶

Property	Description
`Longitude`	Longitude (rad)
`Latitude`	Latitude (rad)
`Altitude`	Altitude above ellipsoid (m)

Horizontal¶

Property	Description
`Azimuth`	Azimuth from north (rad)
`Elevation`	Elevation above horizon (rad)
`Range`	Distance to target (m)

Equatorial¶

Property	Description
`RightAscension`	RA (rad)
`Declination`	Dec (rad)
`Distance`	Distance from observer (m)

See Also¶

Geometry & Visibility