SAAD Module

Directory List

Demos/SAAttDet GUI SAADData
SAAttDet


Demos/SAAttDet

Test attitude determination using the batch methods
Test attitude determination using closed form methods
Attitude determination using a Kalman Filter

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GUI

Adds biases to the non-zero elements of measurement vectors
Convert HSA times to dihedral angles and chordwidths, or convert HSA data
Brings up a window for entering the desired data information
Brings up the SAAD GUI data window
Performs spin axis attitude determination using a GUI.
Default function to load attitude data from formatted text files.
Computes predicted measurements, plot with actual measurements
Computes and displays residual statistics
Data file functions used by SAAD GUI
Brings up a text window explaining the given topic
Brings up the main SAAD GUI window - the SAAD Control Center.
Menu tools used by SAAD GUI
Window management tools used by SAAD GUI
Brings up a window for customizing the inputs to the given solution method
Brings up the SAAD GUI solution window
Computes predicted measurements, plots predictions with

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SAADData

DemoSAADCase.mat - Demo saved case using SampleData.txt.
SAADData.mat - Data for the SAAD GUI formatting.
SampleData.txt - Text file with sample measurement data.
SampleOrbit.mat - Sample orbit data.

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SAAttDet

Compare attitude data with a computed solution.
Eliminate HSA measurements that do not fit the predicted curves. You need
Generate horizon sensor and sun sensor data
Compute the measurement partials
Determines if a bright object will interfere with a sensor scan
Computes the solution to the attitude determination problem using
Computes the solution to the attitude determination problem using
Computes the solution to the attitude determination problem using
Computes the solution to the attitude determination problem using
Solves the least squares problem for
Finds the cost function
Computes the cost functional for the Nelder-Meade algorithm
Computes the cost functional for the Nelder-Meade algorithm
Checks for valid HSA chordwiths
Computes the Jacobian for an arc measurement. Used for sun angle
Interface to DHArcDX.
Computes the derivative of the chordwidth with respect to the
Interface to dhcwdx.
Computes the derivatives of the dihedral angle with respect
Interface to DHDADX.
Compute possible right ascensions and declinations given
Solves the least squares problem for
Finds the vectors
Finds the vectors
Finds the vectors
Computes an arc measurement.
Interface to HArc.
Computes the chordwidth.
Computes the chordwidth when the nadir vector is different for the leading
Interface to HCw.
Computes the dihedral angle for a spinning spacecraft.
Interface to HDA.
Computes the leading edge dihedral angle for a spinning spacecraft.
Computes the trailing edge dihedral angle for a spinning spacecraft.
One step of the extended iterated Kalman Filter measurement
Implements an extended iterated Kalman Filter for the spin-axis
Template to read in attitude data from a formatted text file.
Generate earth radius, nadir vector and sun vector data at the selected
Outputs the set of acceptable measurements. The last 3 inputs
Finds the alpha that minimizes the quadratic cost functional J
Computes the earth's peak radiance.
Computes the solution to the attitude determination problem using
Computes the solution to the attitude determination problem using
Compute possible right ascensions and declinations given
Computes the sun sensor data for a spinning spacecraft. This computes
Eliminates horizon sensor measurements whose corresponding

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SVN Revision: 42334


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