SCPro Module

Directory List

Demos/Landers

Lander2D	Landing demo using bilinear tangent thrust programming.
Lander3D	3D lander simulation.
LunarTakeoff3D	Lunar takeoff demo using bilinear tangent thrust programming.
Takeoff2D	Takeoff demo using bilinear tangent thrust programming.

Demos/ProActuators

BLDCMDemo	Brushless DC motor simulation.
DesignAirCoreTorquer	Design and draw an air core magnetic torquer
FrictionComparisonSim	Compare friction models
RWAResponse	Implements and simulates a spacecraft with 3 orthogonal reaction wheels.

Demos/ProAttitude

AttitudeProfileConstraintsDemo	Demonstrate the AttitudeProfileWithCon function.
DisturbanceModelComparison	Comparison of CubeSat and SCT Disturbance models
SpacecraftWithIMUDemo	3-axis spacecraft with an IMU simulation

Demos/ProControl

CMGSimulation	CMG demo
EarthTargetPointingSim	Point at an earth target and spin about the pointing vector.
MAPControlSim	Implements and simulates the MAP normal mode control.
NadirSunPointingDemo	An attitude and orbit simulation with reaction wheels.
NutationDampingDemo	Demonstrate controlling nutation and the momentum axis of a spacecraft
SCPointingDemo	Demonstrate a spacecraft in orbit pointing at a target on the Earth
SolarMomentumControl	Controls the momentum in a spacecraft using solar pressure.
SpacecraftWithRWADemo	An attitude and orbit simulation with reaction wheels.
TelescopePointingSim	Simulate a momentum bias spacecraft with a telescope on a roll pivot
ThreeAxisControl	Implements and simulates a spacecraft with reaction wheels and thrusters.
VectorTracking	Demonstrate vector tracking using PID3Axis.

Demos/ProDisturbances

AccommodationDrag	Compare simple drag with surface accommodation over a 3D model
DisturbancesSim	Simulation using the full disturbance model

Demos/ProEnvirons

BDipoleVsBMF	Compare the dipole model to the MF model
EuropaEnvironment	Europa atmospheric density and Jupiter magnetic field near Europa.
SolarFluxDemo	Solar flux variation over Earth orbit.

Demos/ProEphemeris

EclipseDurationSunSync

Dawn-Dusk SSO eclipse calculations

Demos/ProMisc

ProgramCosts

Compute program costs

Demos/ProMissions

DFDMarsMission	Direct Fusion Drive (DFD) Mars Mission using an Orion capsule.
DFDSpaceStation	Direct Fusion Drive-powered space station design.
EuropaMissionDesign	Design the Europa Clipper mission using a nuclear fusion engine.

Demos/ProSensors

GPSNavDemo	Demonstrate GPS navigation message model.
GPSTimeDilation	GPS time dilation.
PointCameraDemo	Demonstrate camera pointing. The default 10 deg FOV camera is used.
SolarSystemObservables	Displays navigation observables for two NASA missions.
ZoomLens	Compute the L3 lens position in a Cooke Triplet.

DynamicalModels

ConstraintForceAndTorque	Computes the constraint forces and torques.
GravityGradientAnalytical	Analytical eigenvalues for gravity gradient stabilization.
GravityGradientBoom	Compute frequencies for a boom
GravityGradientEigenvalues	Compute the eigenvalues for a gravity gradient stabilized spacecraft.
GravityGradientFrequency	Gravity gradient frequencies
LinOrbNormalized	Computes the normalized linearized orbit state equations.
NutationMWA	Nutation with a momentum wheel
PropagateOrbit2DAero	Simulate a 2D orbit with aerodynamics
RHSCMG	Spacecraft attitude and orbit dynamics with a disturbance function.
RHSGGRotational	Right-hand-side for spacecraft attitude dynamics with gravity gradient.
RHSGyroNBody	Right hand side for n bodies and a central hub with reaction wheels.
RHSGyroWithOrbit	Computes the right hand side for a spacecraft with a gyro.
RHSGyrostat	Gyrostat right-hand-side.
RHSGyrostatNoFriction	Gyrostat right-hand-side.
RHSLiftingSatellite	Right-hand-side of satellite with lift
RHSLunarLander	Spacecraft attitude and orbit dynamics with a disturbance function.
RHSNBodyCentralHub	Right hand side for a n bodies attached to a central hub.
RHSNBodySH	Right hand side for a n bodies attached to a central hub.
RHSNSpacecraft	Computes the time derivative of n spacecraft.
RHSPlanetTakeoff	Right-hand-side for a 2 dimensional planet takeoff.
RHSPointMass	Spacecraft orbit dynamics with time-varying mass.
RHSRWA	Right-hand-side of spacecraft dynamical equations with reaction wheels.
RHSRWAIDotSC	Right-hand-side of the spacecraft dynamical equations.
RHSRWAOrbit	Computes the right hand side for a spacecraft with reaction wheels.
RHSRWASC	Right-hand-side of the dynamical equations with three ReactionWheels.
RHSReactionWheel	Computes the right hand side for a spacecraft with reaction wheels.
RHSReactionWheelWithOrbit	Computes the right hand side for a spacecraft with reaction wheels.
RHSRigidBody6DOF	6 DOF spacecraft dynamics with a double integrator position model.
RHSRigidBodyLinear	Linearized attitude dynamics for a rigid body.
RHSRigidBodyMass	Spacecraft attitude and orbit dynamics with time-varying mass.
RHSRigidBodyOffsetCM	Right hand side of a rigid body with offset CM
RHSRigidBodyWithTarget	Right-hand-side of spacecraft dynamical equations with a second spacecraft.
RHSSNP	Spacecraft sun-nadir RHS with 4 RWA's and 2 solar arrays.
RHSSlosh	Right hand side for a n bodies attached to a central hub.
RHSSpacecraftWithIMU	Right-hand-side for a spacecraft with an IMU
RHSSpacecraftWithRWA	Computes the right hand side for a spacecraft with reaction wheels.
RHSThreeBody	Right hand side for a three body system.
SeparationSim	Simulate separation of multiple satellites from a carrier.
StepTorque	Produces a step torque.
ThreeAxisControlDisturb	Computes disturbances for ThreeAxisControl.m

Landers

BilinearTangentAltitude	Bilinear tangent law for maximizing altitude on launch.
BilinearTangentLaw	Bilinear tangent law for orbit insertion or landing.
BilinearTangentVector	Bilinear tangent law in vector form for orbit insertion or landing.
FuelTimeOptimalAccel	Computes the optimal acceleration for a fuel/time problem.
LandingControl	Landing controller.
LandingControlBilinear	Implements a bilinear tangent landing controller.
LandingControlGravityTurn	Gravity turn landing controller.
LandingForce	Landing force in the body frame.

MannedVehicle

ECLSSSizing	Sizes an Environmental Control and Life Support subsystem (ECLSS).
ISSCoord	Computes the coordinates in the ISS frame
ISSOrbit	Generate Keplerian elements for the ISS

ProActuators

AirCoreMagneticTorquerDesign	Design a minimum mass air core magnetic torquer.
BLDCMFlux	Brushless DC Motor back emf.
BLDCMFriction	Brushless DC Motor friction
BLDCMInverter	Brushless DC Motor commutation using a 6 switch inverter.
BLDCMRHS	Brushless DC Motor simulation
MagneticFieldDipole	Computes the magnetic field of a dipole
MagneticTorquerDesign	Design a minimum mass magnetic torquer.
MagneticTorquerDipoleMoment	Compute the moment for a magnetic torquer.
PlotHysteresis	Create hysteresis plots.
RHSFriction	Computes dynamics with friction for two different models.
RWAWithPower	RWA with power and heat.
ReactionWheel	RWA model. This models an RWA using Hall sensors.
ReactionWheelFriction	Computes the friction for a reaction wheel.
ReactionWheelStress	Reaction wheel strength and momentum.
SingleAxisLinearDrive	Model a single axis drive with the motor dynamics modeled by a lag.
StepSim	Simulates a two phase stepper motor.
ThrusterAndRWACommand	Computes forces and torques for RWAs and thrusters using off-pulsing.
WheelSpeed	Compute the wheel speeds for a set of reaction wheels.

ProAttitude

AStarAttitudeTrajectory	Compute a trajectory to avoid stayout zones using AStar
AngleDetermination	Model to produce roll, pitch and yaw from nadir and magnetic field
AttitudeProfilePlots	Make time history plots of an attitude profile. See AttitudeProfileWithCon.m
AttitudeProfileVis	Visualize an attitude profile with constraints.
AttitudeProfileWithCon	Build a constrained attitude profile consisting of multiple overlapping modes.
AttitudeTarget	Generate a reference quaternion for a variety of targets.
GroundTrackErrorBudget	Generate a ground track error budget.
ManeuverCostSphere	Maneuver cost on a sphere
QAlignWithCon	Rotate about a body axis to align a body vector with an inertial vector
QRotateToAlignWithCon	Calculate the alignment quaternion while applying constraints
SunVectorPointing	Compute the angles to align the solar wing normal with the sun
TwoUToQ	Finds the quaternion that transforms u1 and u2 to u1T and u2T

ProControl

ACSRWAAndTorquers	Control system
AltitudeHold	Altitude hold for a lander
PID3Axis	A PID Based 3 axis controller for rigid body.
ThrusterCommand	Computes forces and torques for a set a thrusters using off-pulsing.

ProEnvirons

AlbedoFromTextureMap	Creates an albedo map from a texture map.
AtmDensNeptune	Computes Neptune's atmospheric density using scale heights.
AtmJ70ToGround	Computes the atmospheric density using Jacchia's 1970 model or scale heights.
AtmScaleHeightsStdAtm	Computes the atmospheric density using scale heights above 80 km.
BDipoleCoeff	Computes the geocentric magnetic coefficients for BDipole
BDipoleJupiter	Computes Jupiter's magnetic field based on a tilted dipole model.
BDipolePlanet	Computes the geocentric magnetic field based on a tilted dipole model.
DistAero	Computes the aerodynamic disturbance using a Newtonian model.
DistAlbedo	Computes the albedo disturbance
DistRadiation	Computes the radiation disturbance from the central body.
DistSolar	Computes the albedo disturbance.
DistributedAlbedo	Computes albedo from a texture map.
GravitationalConstantEarth	Returns the Earth's gravitational constant.
LocalStarMap	Generates a local star map. Epoch is J2000.
NewtonianForceECI	Computes the Newtonian force in ECI coordinates.
RadiationBelts	Plots the radiation belts
SolarFluxFromPlateECI	Computes the flux from a flat plate.
SolarFluxHistorical	Computes the solar flux prediction based on Julian date.
StarTexture	Create a star texture for use in other programs.
TerminatorPlanet	Computes the terminator circle on a planet.
UDipole	Computes the geocentric magnetic field based on a tilted dipole model.
WMM	Loads in the WMM.COF file

ProEphemeris

AsteroidProperties	Asteroid properties.
EarthEclipseDuration	Compute the eclipse duration in earth orbit.
EclipseFill	Puts a fill in to show when the spacecraft is eclipsed.
EclipseFromECI	Computes eclipses from time and ECI position.
GalileanSatelliteOrbits	Low precision orbits of the four major Galilean satellites.
MoonECIElements	Computes the moon ECI elements
ReadAsteroidDatabase	Read in an asteroid database file and return elements
astorbshort.dat	Short text file with astorb.dat asteroids

ProSensors

AiryDisk	Computes the diameter of the Airy Disk.
AreaOfRectCircInt	Computes the area of intersection of a rectangle and a circle.
AutoPoint	Compute the parameters necessary to place a camera at a target.
CalibrateSunSensor	Calibrate a sun sensor
CameraDatabase	Get default camera properties for different camera models.
CameraImage	Generates the 2D coordinates in the focal plane for a camera.
CameraResolution	Resolution of an optical sensor.
CameraTransform	Generate a camera transformation.
CentroidNoise	Compute centroid noise terms for an optical sensor.
GPSOrbit	Position and velocity of a GPS satellite in the earth-fixed reference frame.
GPSReceiver	GPS receiver model. Models the GPS constellation.
GPSReceiverNav	GPS receiver model with navigation message model.
GPSSatellite	Gives the location of the GPS satellites at JD.
GravitationalTimeDilation	Gravitational time dilation.
HorizonUnitVectors	Compute horizon unit vectors
IFOV	Instantaneous field of view of an optical sensor.
IMU	Inertial measurement unit model.
Illumination	Camera illumination model.
IntensityDistribution	Computes the pixel map intensity.
NavObservables	Computes optical navigation observables.
NavigationCamera	Returns the planet centroid and the local stars locations.
NavigationMeasurement	Navigation measurement model.
PlanetSensorDualScan	A dual scan Earth Sensor model
PointCameraModel	Compute the MATLAB camera pointing parameters from the camera model.
RHSClockDrift	Gravitational and velocity clock drift.
RangeMeasurement	Computes range and range rate measurements.
Spectrum	Gives the spectrum for radiation using conventional names.
StarCameraViewer	Views the output from NavigationCamera
StaticEarthSensor	Static Earth sensor model
StellarIrradiance	Computes the stellar irradiance.
SunSensor	Two detector sun sensor.
ToneRanging	= 299793.458;
VelocityTimeDilation	Velocity time dilation.

ProTools

AlphaBetaToU	Compute a unit vector given alpha and beta angles.
AltitudeSH	Computes the altitude over a spherical harmonic terrain map.
AnimateSpacecraft	Animate spacecraft CAD models in a relative frame
CreateVCDisturbanceFile	Create a VisualCommander disturbance file from a cad model.
DrawFieldLines	Draw field lines on a sphere.
GlideSlope	Compute the glide slope angle.
NRLArray	Generates data for the NRL SolarCon solar array.
NeptuneAirshipSizing	Size an airship to operate with neutral buoyancy on Neptune.
PlanetWithTerrain	Generate vertices and faces for a planet with terrain.
TargetSlew	Compute a slew to a target.
TileOBJSphere	Creates a segmented unit sphere Wavefront obj and mtl files.
UranusAirshipSizing	Size an airship to operate with neutral buoyancy on Uranus.

Systems

AddRobotArm	Add a multi-element arm to a CAD models.
BathtubCurve	Generates a failure bathtub curve
JHAPLSatelliteMass	Mass of JHU APL satellites.

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