SC Module

Directory List

Actuator

BDDesign	Designs a blowdown system.
BatteryDesign	Size a battery given an orbit and planet.
BatterySize	BatterySize Battery sizing for a given orbit and array power.
BloDown	Generates a blowdown curve.
CMG	Simple CMG model. Assumes a tach loop controls the CMG momentum.
EffPw	Computes the effective pulsewidth given the rise and fall times.
Friction	Computes friction torques based on a model with an exponential term.
FrictionBristle	Friction model. This model uses a bristle state.
FrictionSmooth	Rotary friction model using differentiable functions.
HydrazineThruster	Computes the thrust and fuel consumed for thrusters.
MagAirC	Designs an air coil by minimizing a weighted combination of power and mass.
MagTComp	Performs a tradeoff of magnetic torquers versus thrusters.
MomArm	Computes the moment arms for a set of thrusters.
PWMSeq	Generate a pulsewidth modulated sequence given x.
PropellantMass	Compute the propellant mass and pressurant mass for a tank.
RWA	A RWA model using FrictionSmooth.
RWABristle	A RWA model using FrictionBristle to model the friction.
RWASizing	Size a reaction wheel using maneuver requirements.
RWASmart	Smart RWA model. This models an RWA using Hall sensors.
RWASpec	Calculates RWA parameters from spec sheet parameters.
RocketEquation	Compute the final mass from the rocket equation.
SingleAxisDrive	Model a stepping motor drive.
ThrusterColdGas	Cold gas thruster propulsion system
URWAPyramid	Generate unit vectors for a RWA pyramid.

Attitude

AddMassDot	Add mass and mass derivatives using the mass data structure.
AngRate	Computes the magnitude of the angular rate of the momentum vector
ArcEff	Arc efficiency from spin rate and pulsewidth.
CMGAMatrix	Computes the transfer matrix from gimbal rates to torques.
DSTCrit	Compute dual spin turn rates
DSpnStab	Computes the dual spin stability.
DWheel	Computes the damping coefficient ratio for a damper wheel.
DblPivot	Computes the unit normal for a double pivoted assembly.
DeltaQTarget	Generate a target quaternion by limiting the total angular change.
DeltaRate	Computes the new angular rate when the inertia changes.
FPB	Integrand for pointing budgets.
GetModes	Extract flex modes from a finite element modal transformation matrix.
GimbalC	Generate gimbal commands for a gimbal stationkeeping system.
IC3X326	Convert 3x3 inertia matrix to [Ixx Iyy Izz Ixy Ixz Iyz].
InertiaTotal	Computes the new inertia and body rate when appendages change discretely.
LibrationFrequency	Compute the libration frequency from inertia and orbit rate.
LoadFlex	Reads in flex data from a formatted text file.
NPSPM	Computes a spin precession maneuver using a rhumb line precession.
PBudget	Computes a pointing budget over n categories.
PCentr	Calculates the time from pulse start to the centroid.
PPDelay	Compute the pulse pair delay for a Spin Precession Maneuver.
PermanentMagnetRHS	-------------------------------------------------------------------------
PointingBudgetGUI	Creates pointing budgets using a GUI.
PointingBudgetLatex	Computes a pointing budget over n categories.
RLP	Rhumb line precession
RLPMnvr	Simulate a rhumb line precession.
RW2SDev	Converts random walk measured over dT to standard deviation.
RYDyn	Generates open loop four channel magnitude plots for roll/yaw dynamics.
SkewDipl	Computes the skew angle for a single dipole used to control yaw and roll.
SumRXF	Sum a set of torques produced by summing T = rxF
VXPhi	Take the cross product a matrix of vectors times a flex transformation matrix.

BasicOrbit

CP2I	Transformation matrix from the perifocal frame to the inertial frame.
E2M	Converts eccentric anomaly to mean anomaly.
E2Nu	Computes the true anomaly from the eccentric or hyperbolic anomaly.
El2RV	Converts orbital elements to r and v for an elliptic orbit.
FOrbCart	Computes the right-hand-side of the orbit equations about a mass point.
M2E	Generate the eccentric anomaly from the mean anomaly and the
M2EApp	Approximate root to Kepler's Equation for elliptical and hyperbolic orbits.
M2EEl	Eccentric anomaly for an ellipse.
M2EHy	Eccentric anomaly for a hyperbola.
M2Nu	Computes the true anomaly from the mean anomaly.
M2NuAbs	Computes the true anomaly from the mean anomaly without wrapping.
M2NuPb	Generate the true anomaly from the mean anomaly for a parabola.
Nu2E	Converts true anomaly to eccentric or hyperbolic anomaly.
Nu2M	Converts true anomaly to mean anomaly.
Nu2MAbs	Computes the mean anomaly from the true anomaly without wrapping btwn -pi / pi
OrbRate	Compute the orbital rate from distance and semi-major axis.
Period	Compute the period for any orbit.
PeriodToSMA	Compute the semi major axis from the period
RAEToM	Computes m, nu and E from r, a and e.
RHSOrbit	Right hand side for a simple orbit.
RV2A	Computes the semimajor axis given position and velocity magnitudes.
RV2El	Converts Cartesian state to Keplerian orbital elements.
RVFromKepler	Generate an orbit by propagating Keplerian elements.
VOrbit	Computes the orbital velocity.

DemoFuns

DemoController	Demo controller
Dyn	Returns the mass and right hand side of the dynamics equations.
DynP	Returns the mass and right hand side of the dynamics equations.
FIC	Sliding mass on a pendulum using independent coordinates
FICP	Single pendulum using independent coordinates
FMagSim	Dynamics of spacecraft with one reaction wheel.
FNMThruster	Cost functional
FRWA	Simulate a reaction wheel
FRWABristle	RWA model
FRY	Roll/yaw simulation RHS
FRYSim	Roll/yaw simulation.
FSRHS	Compute smooth friction RHS.
FTBRef	Right hand side of the two body equations.
HRY	Measurement equation for a roll/yaw controller.
HysteresisOutput	Gather output from the hysteresis damping simulation
KConst	The constraint equations and Jacobians.
KConstP	The constraint equations and Jacobians. The outputs are
KConstQ	The constraint equations and Jacobians.
QMultJPL	Q2 transforms from A to B and Q1 transforms from B to C

Demos/Actuator

BristleFrictionSim	Demonstrate the bristle friction model with a velocity ramp.
CMGDemo	Demonstrate the use of CMGs. Shows how to use a pseudo inverse to distribute torques.
PivotDemo	Simulates a pivot rotation.
RWABristleSim	Test the reaction wheel model with bristle friction.
RWADemo	Demonstrate different RWA models.
RWASim	Simulate a RWA with a PI rate controller.
RWASmartSim	Test the smart reaction wheel model.
SmoothFrictionDemo	Demonstrate the use of the smooth friction model

Demos/Attitude

Attitude3D	Simple sim using a CAD model of the spacecraft to view the attitude.
CubeSatSurfaceModelforDSim	Generates the surface properties needed by DSim for a simple CubeSat 3U.
ExamplePointingBudget	Demonstrate a pointing budget using PBudget.
GimbalControl	Tests a gimbaled thruster stationkeeping control system.
JitterDemo	Displays different kinds of jitter.
LVLHRateDemo	Demonstrate LVLH angular rate for an eccentric orbit
REAControl	Implements a thruster control system. Uses a CAD model of the spacecraft.
RollYawControl	This script explores different roll/yaw controllers.
SCTTutorial	Implements a spacecraft control tutorial.
TPDRes	Study pulse resolution.
Timeline	Space Shuttle attitude timeline

Demos/CAD

Build3UCubeSat	Build a 3U Cubesat using AddCubesatComponent
BuildAgileSat	Design the Small Agile Satellite.
BuildCassini	Create the Cassini CAD model from DXF data
BuildComsat	Build up a model of a geosynchronous communications satellite.
BuildCylinders	Demonstrate CAD geometry (vectors and rotations) using cylinders.
BuildDXF	Loads in dxf data for Cassini and Huygens, and saves data to mat-files.
BuildFlatPlates	Simple model with two thin plates.
BuildLunarModule	Generates a lunar module model.
BuildMAP	Build a model of the Microwave Anisotropy Probe.
BuildSCModelForImaging	Creates a model for the thermal demo.
BuildSatWThrusters	A very simple spacecraft with thrusters and one sensor.
BuildSimpleSat	A very simple spacecraft with one sensor.
BuildSolarSail	Build a solar sail model using BuildCADModel.
BuildSubassembly	Load a dxf file and save it as a subassembly.
BuildTwoArraySC	Make a detailed demonstration spacecraft with two solar arrays.
BuildXYZSat	A very simple 'XYZ' spacecraft with six panels and axes.
CADColorDemo	Demonstrate CADColor
CassiniColorDemo	Demonstrate CADColor using the Cassini orbiter.
CassiniSim	Draws a picture of the Cassini orbiter, Huygens probe, Saturn, and Titan.
GravGradCubeSat	Generates a CubeSat model that is gravity gradient stabilized.
ShuttleSim	Simulate the space shuttle model.

Demos/Disturbances

DisturbanceBatchDemo	Run the disturbance model for a spacecraft with two rotating arrays.
DisturbanceFlatPlate	Disturbance analysis of two thin plates.
SCDisturb	Demonstrate disturbance modeling with shadowing.

Demos/Dynamics

ConstDyn	Example 4.2 and 4.3 in the reference.
NutationAnimation	Demonstrates rigid body rotation.
NutationSim	Demonstrates nutation and generates an STK attitude file.
RobotArm	Six body simulation of a spacecraft with a robot arm.
TTB	Demonstrate two body dynamics using the two body dynamics model.
TreeCAD	Three body simulation with initialization using the CAD tools.
TreeSim	Three body simulation. The bodies are connected
WireSimG	This script demonstrates the deployment of the wire from the spacecraft.

Demos/Environs

J70SolarCycle	Demonstrate the J70 atmosphere model over a solar cycle.
J70SunDemo	Demonstrate the J70 atmosphere model.
MagneticFieldDemo	Compare the magnetic field models.

Demos/Ephemeris

EarthMarsAnimation	Animate the phasing of Earth and Mars over time.
ExampleLEOAnalysis	Demonstrate simple orbit and attitude ephemeris analysis
JPLPlanetDemo	Demonstrate JPL ephemeris for the solar system.
TEarth	Demonstrate earth nutation, precession and rotation.
TEclipse	Computes eclipses.
TPlanets	Demonstrate the planets model.
TerminatorLineDemo	Animate the terminator line through a year

Demos/GOESRead

GOESDemo

Demonstrates the GOES Toolbox functions.

Demos/GUIPlugIn

CommandPluginDemo	Demonstrate command lists
LaunchGUIDemo	Launch the GUI plug in demo. See the GUIPlugIn folder for the function.

Demos/MagneticControl

MagControl	Demonstrate the magnetic controllers.
MagSim	Simulate a momentum bias spacecraft with magnetic roll/yaw control.
MagneticControlSim	Demonstrates magnetic control.
MagneticControlSimWithPower	Demonstrates magnetic control and power profiles.
PermanentMagnetSim	Simulate the attitude of a rigid spacecraft with permanent magnet in LEO

Demos/Sensor

GyroDemo	Test the gyro model.
TGyro	Simulate various single degree of freedom gyros.

Demos/SystemDesign

SCDisturbanceAnalysis	Run the disturbance model in GEO. Uses TwoArraySC.mat
SCFuelBudget	Generate the Spacecraft Fuel Budget.
SCMassBudget	Create a mass budget from a CAD file (TwoArraySC.mat).

Disturbances

AddSurf	Add a surface to the data structure.
AeroDragForce	Calculate the drag force assuming constant area.
AeroF	Compute the aerodynamic forces on a set of elemental areas.
Disturbances	Compute the total force and torque on a spacecraft generated by the CAD package.
FAeroSurfaceAccommodation	Computes the aerodynamic force using surface accommodation coefficients.
FGravityGradientStiffness	Gravity gradient for a rigid body with small offsets from LVLH.
GravityGradientFromR	Computes a gravity gradient torque from r and mu.
GravityGradientStiffness	Computes gravity gradient stiffness from inertia and orbit rate.
OpticalSurfaceProperties	Returns optical surface properties for selected materials.
SaveSurfacePropertiesDSim	Save surface properties to the file
SolarF	Compute the solar force on a set of elemental areas.
TGG	Computes a gravity gradient torque.
TRD	Computes residual dipole torques.
TRF	Computes an RF torque for a set of antenna.
TSolarP	Generates solar pressure torques with shadowing.

Dynamics

ASim	Attitude simulation of a rigid body.
DIModel	Double integrator model.
FAKM	AKM Burn right-hand-side
FDC	The right hand side of equations formulated using Lagrange multipliers
FGs	Gyrostat right-hand-side.
FPivot	Computes the right hand side of the spacecraft with pivot eofm.
FRB	Rigid body right-hand-side.
FRBWithMag	Rigid body right-hand-side with magnetic torque computed internally.
FTB	Two body spacecraft model right-hand-side.
FXModel	Plant for a momentum bias spacecraft with flexible solar arrays.
GSModel	Gyrostat dynamics model which computes acceleration or plant matrices.
GetFlex	Reads in flex data from a formatted text file.
MBModel	Momentum bias spacecraft model
PlotFlex	See GetFlex for formatting data into the needed structure.
RBModel	Computes the angular acceleration of a rigid body.
RHSRigidBody	Spacecraft attitude and orbit dynamics with a disturbance function.
RHSRigidBodyWithDamping	Rigid body dynamics with damping.
SCWithRollPivot	Model for a spacecraft with a roll pivot.
SCwPivot	Model for a spacecraft with a single pivoted momentum wheel.
TBModel	Since version 1.
Tree	Right hand side of the equations of motion for a topological tree.
TreeAdd	Add a body to the tree data structure.
TreeH	Computes the momentum for the topological tree dynamics.
TreeInit	Create the tree data structure
TreePlot	Plot the output of tree.
TreePrnt	Print out the body information for the tree model.
VIModel	Computes the angular acceleration of a body with time varying inertia.
WireC	The right hand side of the wire equations formulated using Lagrange multipliers
WireDMch	Models the deployment mechanism
WireFRB	Spacecraft with multiple wires
WireH	Magnitude of the angular momentum
WireInit	Initialize the wire model data structures
WirePlot	Plot the wires. One wire is plotted on each page.

Environs

AtmDensMars2	Computes the atmospheric density of Mars.
BDipole	Computes the geocentric magnetic field based on a tilted dipole model.
BMF	Magnetic field based on the Mead-Fairfield Model.
EarthAlb	Computes the heat absorbed per unit area due to albedo.
EarthEnvironment	Compute the environment parameters for the Earth.
EarthRad	Computes the heat absorbed due to earth radiation.
Geo	Computes parameters for a geosynchronous orbit.
GeoEclps	Computes the normalized sun intensity for an earth geosynchronous orbit.
MagField	Computes the Earth magnetic field using the DGRF/IGRF model.
MagFieldData	Data for planet magnetic fields.
MagFieldPlanet	Computes the magnetic field using Schmidt normalized coefficients.
MagneticDipole	Computes the magnetic field of a dipole along the z axis.
MagneticDipoleCart	Computes the magnetic field of a dipole along m.
MolWt2R	Computes R given the molecular weight.
PlanetEnvironment	Compute the environment parameters for a selected planet.
PlanetaryAtmDens	Computes the atmospheric density for Earth, Mercury, Venus, Mars and Pluto.
PlanetaryRadiationAndAlbedo	Computes the albedo and radiation flux for planets.
ReadMagField	Read in the magnetic field from a file.
SolarFluxPrediction	Computes the solar flux prediction based on Julian date.
SolarFlx	Solar flux from the sun as a function of distance in AU.
TerrestrialSolarFlux	Solar flux and direction from the sun with seasonal variation.
TitanAtmosphere	Titan density model.
Water	Properties of water.

Ephem

CEcl2Eq	Transformation matrix from ecliptic to Earth equatorial planes.
DeltaML	Compute total change in longitude between two orbits.
ECIToECIR	Computes the transformation form ECI to ECIR.
ECIToPlanet	Computes the matrix from mean of Aries 2000 to planet fixed frame.
EOfE	Computes the equation of the equinoxes
EarthEclipseDuration	Compute the eclipse duration in earth orbit.
EarthNut	The matrix that rotates from the Earth mean axes to the true axes.
EarthPre	Computes the earth precession matrix
EarthRot	Computes the Earth greenwich matrix that transforms from ECI to EF.
EarthRotationZero	Determine jD for when the earth-fixed frame is aligned with the ECI frame.
EarthRte	Computes the mean earth rate.
Eclipse	Computes eclipses.
EclipseDuration	Computes eclipse orbit fraction.
EclipseHelio	Determines eclipses in heliocentric coordinates.
EquatorialToGalactic	Returns the equatorial to Galactic transformation matrix.
FSolstice	RHS for computing solstice.
GASTime	Compute Greenwich apparent sidereal time.
GMSTime	Compute Greenwich mean sidereal time from Julian date.
GTrack	Calculate a ground track on an ellipsoid.
HMS2S	Converts hours, minutes and seconds into seconds
InterpolateState	Interpolate a planet's state for a given Julian Date.
LagrangePointsL1ToL5	Computes the position of Lagrange points in normalized rotating
LoadFK5	Reads in the FK5 catalog in MICA format.
LoadLunarTopography	Reads in the Clementine data.
LunarAngle	Computes the angle needed to see over lunar terrain.
LunarProfile	Draw a lunar profile given lambda and theta.
MSidDay	Computes a mean sidereal day
MSolDay	Computes a mean solar day.
MarsRot	Computes the matrix that transforms from ECI to areographic axes.
MoonEl	Computes the moon orbital elements with respect to the earth inertial frame.
MoonRot	Computes the matrix that transforms from ECI to selenographic axes.
MoonV1	Generate the moon vector in an earth or spacecraft centered frame.
MoonV2	Generate the moon vector in an earth or spacecraft centered frame.
Moons	Lists moons of a planet or planet center about which a moon orbits.
NutDelta	The changes in longitude and obliquity due to earth nutation.
ObOfE	Computes the mean obliquity of the ecliptic of date.
Parallax	Calculate the parallax
PlanetPosJPL	Get positions for an array of planets using the JPL ephemeris.
PlanetPosition	The position vectors, gravitational parameters and velocity for the planets.
PlanetPositionEMBarycenter	The position vectors, gravitational parameters and velocity for the planets.
PlanetRotation	Computes the mean planet rotation rates from their rotation periods.
PlanetYear	Length of year of planets in terms of Earth years.
PlanetaryDistanceToSun	Finds the distance to the sun and the solar flux.
Planets	Simplified planet ephemerides from the almanac.
QSpin	Creates a series of quaternions with its x axis spinning about u.
QSunNadir	Compute the sun-nadir quaternion and other quantities.
QSunPointing	Creates a sun reference frame with +x pointing at the sun.
RSHMoon	Generates a topographic map of the moon using spherical harmonics.
S2HMS	Converts seconds into hours, minutes and seconds
SolarSys	Computes the position vectors of the planets as a function of time.
SolarSysJPL	Computes the position vectors of the planets as a function of time.
SolarSystemElements	Computes the solar system elements on a given Julian Date.
SolarSystemProperties	Look up a moon or planet and return its properties.
SolarVisibility	Compute the solar intensity experienced by a spacecraft.
SortFK5	Sort FK5 by distance in light years and save in a new file
StarMap	Draws a star map.
SunNadir	Compute the sun-nadir angles and yaw rate.
SunV1	Generate the sun vector in the earth-centered inertial frame.
SunV2	Moderate precision sun model.
SunVectorECI	Finds the sun vector any place in the solar system.
TerminatorLine	Compute the terminator line on the Earth that defines day/night.
TransformLagrangePoints	Computes the position and velocity of stable Lagrange points.
TruEarth	Computes the matrix from mean of Aries 2000 to earth fixed frame.
UVAA	Apparent sun vector from quantities tabulated in the astronomical almanac.

GOESData

G0758910.BIN;1 - Example GOES data.

SATPOS.TXT;1 - Satellite positions.

GOESRead

BHarm	Computes a sine/cosine harmonic series for the magnetic field.
BTrans	Transforms the GOES data into popular earth pointing frames.
GOESCD	Ordering information for the GOES CD-ROM.
GOESLeg	Draws the GOES Legend.
GOESLon	Computes the west longitude of a GOES spacecraft.
Glitch	Removes glitches from data.
LoadGOES	Loads GOES binary data. Will edit out magnetometer glitches.
LoadMag	Loads GOES magnetometer data. This can take a lot of data.
LoadSatP	Loads in GOES Satellite Positions
LoadSers	Loads GOES data from multiple files.
TwoC2F	Converts two's complement of length 2b to a floating point number.
WeathLeg	Draws the Weather Legends.
Weather	Loads GOES binary data. Will edit out magnetometer glitches.

GUIPlugIn

AttitudeProfilePlugIn	Generate attitude profiles.
CommandPlugIn	Create a command interface for a simulation.
DrawSCPlugIn	Draw spacecraft in orbit about a planet. Includes a separate controls window.
ElementsPlugIn	Create an orbit elements GUI plug in.
GUICounter	This gui displays a counter.
OrbitDisplayPlugIn	Create an orbit display.
ParseCommand	Parse a command string
PlugInDemo	Demonstrate using the GUI plug ins with an orbit simulation.
SpacecraftStatePlugIn	Create an spacecraft state GUI plug in.

Hardware

FloatToWord	Convert floating point to word.
HMagEl	Computes the magnetic field for a filament or loop magnetic element.
PivotMch	Models a pivot mechanism and converts stepping motor steps to pivot angle.
WordToFloat	Convert an integer word to a floating point number.

MagneticControl

BFromHHysteresis	Flux density from the magnetic field due to hysteresis.
Dipole	Compute the magnetic field of a dipole
DipoleFromField	Computes the dipole for a solid magnet.
MagControlThreeAxis	Dipole vector needed to produce a torque given the magnetic field over time.
MagControlTwoAxis	Two axis magnetic control dipole
MagTorquer	Models a magnetic torquer.
MagneticHysteresis	Right hand side for a dynamical model of magnetic hysteresis.
MagneticTorquer	Simple MagneticTorquer model. Outputs the torque in body coordinates.
RHSHysteresisDamper	Right hand side for a dynamical model of magnetic hysteresis.
TorqueHysteresisDamper	Torque from a hysteresis damper.
TorqueRod	Torque rod model using tanh

SCData

AutoCADColors.txt - Generate colors for AUTOCAD.
BRIGHT.CAT - Bright star catalog.
CLIPPER.dxf - Pan am space clipper.
Commands.txt - Commands
ComstarSA.txt - Comstar solar array
FK5.100 - FK5 catalog.
HUBBLE.dxf - Hubble space telescope.
PolylineTest.dxf - Polyline file.
TFIGHTER.dxf - Tie like fighter.
USS_LA.dxf - US submarine.
cassini.dxf - Cassini CAD Model
gltm2b.topo - Topographic data
probe.dxf - Huygens CAD model.
sCTConstants.mat - Constant database.
sts.txt - Shuttle NORAD 2 line elements.
visual.txt - Visible satellite NORAD 2 line elements
zvezda1.dxf - Zvezda module.
ScDB	GUI to output the value of a constant for a spacecraft.

SCDatabase

ScDB	GUI to output the value of a constant for a spacecraft.

SCMat

Ariel.mat - Texture map.

AttitudeProfileExampleData.mat - Example data for attitude profile

Callisto.mat - Texture map.

CassiniColor.mat - Cassini model colored.

Charon.mat - Texture map.

ComStarI.mat - ComStar inertia data.

DefaultSpacecraftDataFile.mat - Saved spacecraft component data.

Deimos.mat - Texture map.

Dione.mat - Texture map.

DistModl.mat - Disturbance model data.

EarthHR.mat - High resolution Earth texture map.

ElementSet.mat - Orbital element set

Enceladus.mat - Texture map.

Europa.mat - Texture map.

FlexM00.mat - Flex model, array at 0 deg.

FlexM90.mat - Flex model, array at 90 deg.

GEMT1.mat - GEM-T1 gravity model.

Ganymede.mat - Texture map.

Huygens.mat - Spacecraft CAD model.

IGRF11.mat - IGRF magnetic field data, 2010.

IGRF95.mat - IGRF magnetic field data, 1995.

Iapetus.mat - Texture map.

Jupiter.mat - Texture map.

Mars.mat - Texture map.

Mercury.mat - Texture map.

Mimas.mat - Texture map.

Miranda.mat - Texture map.

Moon.mat - Texture map.

Neptune.mat - Texture map.

Oberon.mat - Texture map.

Phobos.mat - Texture map.

Pluto.mat - Texture map.

Proteus.mat - Texture map.

RYC.mat - Roll/yaw control data.

Rhea.mat - Texture map.

Saturn.mat - Creates the rings of Saturn.

SolarFluxPredictions.mat - Solar flux data.

Sun.mat - Texture map.

Tethys.mat - Texture map.

TitanDensityData.mat - Data for Titan atmosphere density.

Titania.mat - Texture map.

Triton.mat - Texture map.

Umbriel.mat - Texture map.

Uranus.mat - Texture map.

Venus.mat - Texture map.

planet.mat - Planet file

SCModels

COMETS_Data.mat - Comets spacecraft CAD data.

SCForImaging.mat - Stored CAD model for thermal imaging demos.

SCwRWA.mat - CAD model with reaction wheels.

SatWThrusters.mat - Model for a simple satellite with thrusters.

ShuttleModel.mat - Shuttle CAD model with rotating doors and arm.

SimpleSat.mat - Satellite CAD model of a simple cube.

TwoArraySC.mat - Spacecraft with two rotating arrays for system studies.

XYZSat.mat - Simple spacecraft with axes.

Sensor

AI2Rate	Converts attitude increments to rate.
CW2Roll	Converts the output from a conical scanning sensor to roll.
Counter	Simulate a counter.
ESA	Simulates an ideal earth sensor measuring roll and pitch.
ESACS	Models a conical scanning earth sensor.
ESAChord	Compute the delta earth chord for a scanning earth sensor.
EnergyPerRing	Energy per ring for a diffraction limited circular aperture
FP2RADec	Converts focal plane coordinates into right ascension/declination of the targets.
FPSensors	Computes the output of focal plane sensors.
FSDG	Gyro right-hand-side.
Gyro	Models a gyro.
GyroData	Typical gyro noise data.
HRG	Model a hemispherical resonating gyro. Includes all noise sources
HSAData	Computes the hsa sensor data for a spinning spacecraft. This computes
HSAPlot	Plots the HSA sensor data.
LightDetectorIntegrals	Normalized stellar-light detector integral given a star type and detector
MeasAccel	Models accelerometers. This model includes quantization, noise and a bias.
MeasEarthSensor	Returns roll and pitch for a generic earth sensor.
MeasMagnetometerEarth	Returns magnetic field measurement in Earth orbit.
MeasRateGyro	Returns body rate information.
MeasRateIntegratingGyro	Model of a rate integrating gyro measurement.
MeasRelativePosition	Returns relative position information.
MeasStarTracker	Returns the output of a star tracker.
MeasState	Returns elements of a state vector as a measurement.
MeasSunSensorAnalog	Returns analog sun sensor measurements.
MeasSunSensorDigital	Returns digital sun sensor measurements.
Nadir	Computes nadir angle from a cant angle, earth angle and chordwidth
Optic2D	Models a generic 2 dimensional optical sensor.
PointSpreadFunction	Point spread function for a circular aperture
QProp	Propagates a quaternion based on updated angular increment measurements.
RADec2FP	Converts right ascension and declination into focal plane coordinates.
RIGModel	Computes the output of a rate integrating gyro package.
RIGOut	RIG output.
RWACountToRate	Converts RWA tachometer count to rate.
RateGyro	Model a rate gyro. Includes all noise sources
SCClock	Models a spacecraft clock.
SDG	Single degree of freedom mechanical gyros.
SSA	Simulates a single axis suns sensor
SSEye	Power series model for the output of an analog sun sensor.
U2FP	Computes the location in the focal plane of unit vectors.
U2Pix	Converts a unit vector into a pixel location.

SystemDesign

PowerDesign	Sizes the battery and solar array
StructureAnalysis	Analyze the structure of a small agile satellite.

Visualization

HelioPlot	Plot planets and a trajectory in the heliocentric frame.
LoadEarthMap	Creates a figure with Earth texturemap, political boundaries, and lat/lon.
PlotPlanet	Add planet to the current axes.
PlotPlanetOrbit	Plot a 3D orbit around a planet in the ECI or planet fixed frame.
PltOrbit	Plots one orbit and the sun vector looking down on the ECI Plane.

SVN Revision: 42425

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