Link Module

Directory List

Coverage Demos/Optical Demos/RF
Demos/Tutorials Ladar LinkDesign
LinkUtilities Optical RF
Radar

Coverage

AntennaPoint Compute the boresight matrix or attitude quaternion.
GenerateSwath Generate dynamical plots of antenna patterns.
GroundStationVisibility Determine ground station visibility for spacecraft position(s).
ISLFOV Determines if a satellite is visible to an ISL.
SatelliteVisibility Determines the visibility between the points in r2 and r1.

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Demos/Optical

OpticalLinkDemo Create an optical link budget for a Pluto mission.

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Demos/RF

LinkAnalysis Link analysis for an earth orbiting spacecraft.
LinkAnalysisMars Link analysis for a Mars mission
LinkExamples Examples of link analysis from the reference
RadarAnalysis Design a radar
VoyagerCommLink Voyager link analysis
VoyagerLinkBudget Voyager spacecraft link budget

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Demos/Tutorials


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Ladar

LADAREquation Solves one form of the laser radar equation (ladar).
LADARTransmitPower Computes required Ladar transmit power.

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LinkDesign

LinkAnalysisTool Performs a link analysis for a satellite over an orbit
LinkBudget Performs a link budget for a satellite.

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LinkUtilities

BEP Computes the bit error probability given C/N and the bit rate.
CNRComp Compute the carrier to noise ratio.
ConstellationGroundContact Compute the number of contacts for a constellation with ground users.
ConstellationMaxDistance Compute maximum distances between satellites in a constellation.
DBPower Power conversion to decibels. dB = 20 log10(s).
DBSignal Signal conversion to decibels. dB = 10 log10(s).
DBSignalToPower Convert decibels to power (invert decibels).
DBWToNW Convert dBW (decibels-Watts) to nanowatts.
DBWToPW Convert dBW to picowatts.
DataRate Computes communications sytems data rates
DataRateGain Computes communications sytems data rates from gains
DataRateOrbit Computes data rate over an orbit.
DopplerBlind Finds Doppler blind speeds.
DopplerShift Doppler shift
FPD Function called by fzero to compute the carrier to noise ratio.
FPFA Right hand side for probability of false alarm computation.
Frequency Outputs the frequencies for specified bands of electromagnetic radiation.
FrequencyToWavelength Converts frequency to wavelength.
ModulationSpectralEfficiency Spectral efficiency of different modulation schemes
MultiBEPPlot Computes and plots multiple bit error rates on the same plot.
PeriodToSemimajorAxis Computes semi-major axis from orbital period
ProbDetection Probability of detection for a diffuse target.
Shannon The Shannon information theorem relating S/N and C/B.
TToPower Convert temperature to power via bandwidth.
Wavelength Outputs the wavelengths for bands of electromagnetic radiation.
WavelengthToFrequency Converts wavelength to frequency.
YBComp yB computation used as part of the probability of detection algorithm.

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Optical

OpticalBackgroundNoise Computes optical background noise for various sources.
OpticalLinkBudget Create an optical link budget.
OpticalReceiverNoiseDensity Compute the receiver noise density.
SNR Compute the signal to noise ratio.

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RF

AntennaGain Antenna gain from area and efficiencies as a function of frequency.
Beamwidth3dB Antenna 3 dB angle for a parabolic antenna.
Gain3dB Antenna 3 dB gain for a parabolic antenna.
GainPattern Compute an antenna gain pattern as a function of the incidence angle.
LossAtmosphericGas Computes the link attenuation due to gas.
LossDepointing Computes the depointing loss
LossFreeSpace Computes the free space loss.
LossPolarization Computes the polarization loss.
LossPrecipitation Computes the link attenuation due to precipation (rain).
NoisePower Computes the noise power required from bandwidth and noise temperature.
PowerReceived Computes the power received by an antenna.
TAntennaGround Compute the temperature of an antenna on the ground.
TAttenuator Compute the temperature of an attenuator.
TMoon Noise temperature of the Moon. Constant at 250 deg-K.
TNoiseCascade Compute the noise of a cascade series.
TPlanet Noise temperature of a planet.
TReceiver Compute the noise temperature of a receiver attached to an antenna.
TSky Brightness temperature of the sky.
TSun Noise temperature of the sun.

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Radar

Clutter Compute clutter for land or sea.
ClutterArea Compute clutter area.
DBWToPower Convert from dBW to power.
DBmToPower Convert from dBm to power.
DBsmToSM Convert from dBsm to m^2
NElementsPhasedArray Compute the number of elements needed to prevent grating lobes.
PhasedArray Generate a phased array
PowerToDBW Convert from power to dB watts.
PowerToDBm Convert from power to dB milliwatts
RFSystemNoise Computes system noise.
RadarAccuracy Compute radar accuracy.
RadarCrosssection Computes radar crossections.
RadarEquation Solves the radar equation. Can compute range or power. This function assumes
RadarEquationPulse Solves the radar equation. Can compute range or power. This function assumes
RadarEquationSN Computes signal to noise ratios from the radar equation.
RadarPulseTrain Generates a pulse train.
RadarSN Computes the radar signal to noise ratio for a pulsed monostatic radar.
RadarThermalNoise Computes thermal noise for radar or any communications system.
RadarWindows Parameters for different radar windows.
SMToDBsm Convert m^2 to dBsm
TrackingAccuracy Computes radar tracking accuracy.

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