Path: SpacecraftEstimation/StellarCatalog
% Generates a star data structure
It contains a list of nearby
stars and their dot products. The fieldOfView input defines the
radius for a small circle on a sphere. This routine eliminates
duplicate stars (i.e. it stores the dot from k to j but not
from j to k.)
The starMatrix field is a matrix
[intensity;unitVector]
The nearMatrix field is a matrix of dot product pairs of stars
within the fieldOfView of other stars. For example if the field
of view is 10 deg it will compute the dot products for all stars
within 20 deg of star k.
The starCatalog field is a reduced version of the input star catalog
with the stars that are too close to separate eliminated.
The angular resolution and fieldOfView fields are the same as
the input variables.
To admit all stars set angularResolution to 0.
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Form:
d = StarDataGeneration( starCatalog, fieldOfView, angularResolution )
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Inputs
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starCatalog (1,1) Star catalog data structure
fieldOfView (1,1) Angle to admit dot products (rad)
angularResolution (1,1) Angular resolution between stars (rad)
q (4,1) Quaternion
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Outputs
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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
.nearSlope (1,1) Slope
.nearQ (1,1) Quaternion
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SC: Ephem/LoadFK5 SpacecraftEstimation: StellarAttDet/CreateKVector SpacecraftEstimation: StellarCatalog/LoadCatalog SpacecraftEstimation: StellarData/FK5Polar SpacecraftEstimation: StellarData/Hipparcos Common: CommonData/SwooshWatermark Common: GUIs/TimeGUI Common: General/CellToMat Common: General/CloseIfHandle Common: General/DeBlankLT Common: General/DeleteCell Common: General/MatToCell Common: General/Watermark Common: Graphics/NewFig Common: Graphics/Plot2D Common: Graphics/PltStyle Common: Graphics/TitleS Common: Transform/VM2Int
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