Path: SpacecraftEstimation/StellarCatalog
% Generates a star data structure from a star matrix.
Most of the data structure is empty. This routine primarily
creates a matrix which is a list of stars that are close
to each other for search purposes. The data structure
collects the inputs and the resulting "nearMatrix" into
a data structure. starCatalog in the data structure is the
star matrix in star catalog form. This routine can be slow. Normally
this would not be done in flight.
The field of view angle determines how close a star has to be
to another to be visible in the field-of-view. The angular resolution
determines which stars must be considered a single star.
Type StarDataFromStarMatrix for a demo with a random star
catalog and a half-sky field-of-view.
------------------------------------------------------------------------
Form:
d = StarDataFromStarMatrix( starMatrix, fieldOfView, angularResolution )
------------------------------------------------------------------------
------
Inputs
------
starMatrix (4,:) Star catalog matrix
fieldOfView (1,1) Angle for dot products (rad)
angularResolution (1,1) Angular resolution (rad)
-------
Outputs
-------
d (1,1) Data structure
.starMatrix (4,:) [Intensity;u]
.nearMatrix (3,:) [dot;star;base star]
.starCatalog (1,1) Reduced Star catalog
.angularResolution (1,1) Angular resolution
.fieldOfView (1,1) Field of view
------------------------------------------------------------------------
AerospaceUtils: Coord/U2RADec SpacecraftEstimation: StellarCatalog/RandSC Common: GUIs/TimeGUI Common: General/CloseIfHandle
Back to the SpacecraftEstimation Module page