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Path: SpacecraftEstimation/StellarAttDet
% Models a pinhole camera for star identification.
Projects the catalog into the camera frame. This model does not
account for lense effects. The function includes a noise model that
accounts for random intensity variations, random centroid shifts and
false stars.
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Form:
[starMeasurement, camera] = PinholeStarCamera( bCatalogToCamera, camera,
catalog, drawImage )
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Inputs
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bCatalogToCamera (3,3) Transforms from the catalog frame to the
camera frame. The boresight is along +Z.
camera (.) Camera data structure
.fScale (1,1) Pixel conversion
.wX (1,1) Width of sensing element in X
.wY (1,1) Width of sensing element in Y
.gain (1,1) Camera gain
.noise (1,1) Include the noise model (T/F)
.sigmaXY (1,1) Position noise (pixels)
.sigmaI (1,1) Intensity noise (after gain)
.sigmaFS (1,1) False star noise
.fSAtEnd (1,1) 1 if false stars are at the end of the measurements
catalog (1,1) Star catalog data structure or name
drawImage (:) If entered will draw a star image
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Outputs
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starMeasurement (.) Data structure
.pixelLocation (2,m) Coordinates of centroid [x;y]
.pixelIntensity (1,m) Intensity of each object
.star (1,:) Star indices
camera (.) Camera data structure
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See also: U2Pix, VM2Int, PinholeCameraStruct, PinholeCameraDemo
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Common: Graphics/NewFig Common: Graphics/XLabelS Common: Graphics/YLabelS Common: Transform/RaDec2U Common: Transform/VM2Int SC: Sensor/U2Pix SpacecraftEstimation: StellarAttDet/PinholeCameraStruct SpacecraftEstimation: StellarCatalog/LoadCatalog
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