Path: Link/LinkDesign
% Performs a link analysis for a satellite.
The routine will automatically propagate for a full earth rate/orbit cycle
starting at the JD in the orbit data structure.
Keplerian orbit kinematics are assumed.
You can run a demo by typing LinkAnalysisTool.
--------------------------------------------------------------------------
Form:
[gOverT, cOverN0, lRain, lFS, lA] = LinkAnalysisTool( spaceLink, groundLink, orbit )
--------------------------------------------------------------------------
------
Inputs
------
spaceLink (1,1) Space link data structure
.theta3DB (1,1) 3 dB antenna angle (deg)
.fIllumination (1,1) Illumination factor (deg)
.effTransmit (1,1) Transmit efficiency;
.powerTransmit (1,1) Transmit power (W)
.lossEdge (1,1) Edge loss (dB)
.lossTransmitterFeed (1,1) Feed loss (dB)
.frequency (1,1) Transmit frequency (GHz)
.diameterAperture (1,1) Aperture diameter (m)
.thetaDepointing (1,1) Pointing error (deg)
groundLink (1,1) Ground link data structure
.latitude (1,1) Latitude (deg)
.longitude (1,1) Longitude (deg)
.altitude (1,1) Altitude (km)
.horizonAngle (1,1) Minimum angle above the horizon
.antenna.type (1,:) Antenna type
.antenna.area (1,1) Antenna area (m^2)
.tGround (1,1) Ambient ground temperature (deg-K)
.tAttenuatorAmbient (1,1) Ambient attenuator temperature (deg-K)
.lossAttenuator (1,1) Attenuator loss (dB)
.lossFeeder (1,1) Feeder loss (dB)
.climateZone (1,1) Climate zone (a-q)
.precipitationFractionOfTime (1,1) Fraction of time with precipitation
.polarizationTiltAngle (1,1) Polarization tilt angle (deg)
orbit (1,1) Orbit data structure
.el (1,6) [a i w W e M] [(km) (rad) (rad) (rad) () (rad)]
.jD (1,1) Epoch (Julian Days)
.t (1,:) Time (sec) from epoch
-------
Outputs
-------
gOverT (1,:) g/T (dB)
cOverN0 (1,:) c/N0 (dB)
lRain (1,:) Rain loss (dB)
lA (1,:) Atmospheric gas loss (dB)
lFS (1,:) Free space loss (dB)
--------------------------------------------------------------------------
AC: ACData/ACTConstants AerospaceUtils: Coord/HorizonAngle AerospaceUtils: Coord/LatLonAltToEF Link: LinkUtilities/DBSignal Link: RF/Beamwidth3dB Link: RF/Gain3dB Link: RF/LossAtmosphericGas Link: RF/LossDepointing Link: RF/LossFreeSpace Link: RF/LossPrecipitation Link: RF/TAntennaGround Link: RF/TAttenuator Link: RF/TReceiver Link: RF/TSky SC: BasicOrbit/Period SC: BasicOrbit/RVFromKepler SC: Ephem/EOfE SC: Ephem/EarthNut SC: Ephem/EarthPre SC: Ephem/EarthRot SC: Ephem/GMSTime SC: Ephem/MSidDay SC: Ephem/NutDelta SC: Ephem/ObOfE SC: Ephem/TruEarth SC: SCData/sCTConstants Common: CommonData/Constants Common: CommonData/SwooshWatermark Common: CommonData/xSplashSmall Common: Database/Constant Common: General/CellToMat Common: General/DeBlankLT Common: General/DeleteCell Common: General/MatToCell Common: General/Watermark Common: Graphics/Mesh2 Common: Graphics/NewFig Common: Graphics/Plot2D Common: Graphics/Plot3D Common: Graphics/PltStyle Common: Graphics/TimeLabl Common: Graphics/XLabelS Common: Graphics/YLabelS Common: Graphics/ZLabelS Common: Time/DTSToDTA Common: Time/Date2JD Common: Time/DateStringToJD Common: Time/JD2000 Common: Time/JD2T Common: Time/JDToMidnight Math: Linear/DupVect Math: Linear/Mag Math: Linear/Unit Math: MathUtils/R2P5 Math: Trigonometry/CosD Math: Trigonometry/SinD
Back to the Link Module page