Parameters Reference¶

All parameters are set in .ini files using OMNeT++'s standard dot-notation path syntax. The wildcard * matches a single level; ** matches any number of levels.

Terminal — Application Layer¶

Path prefix: *.terminal[*].app.*

Parameter	Type	Description
`timeToFirstPacket`	time	Delay before the first packet is generated
`timeToNextPacket`	time	Interval between successive packets

Terminal — MAC Layer¶

Path prefix: *.terminal[*].dlk.mac.*

Parameter	Type	Description
`ttwDuration`	time	Total transmission time window allocated per packet
`Ntx`	int	Number of transmission slots within the window
`numConcurrentTx`	int	Number of packets that can be processed simultaneously
`ttxStart_min`	time	Minimum random delay before transmitting within a slot
`ttxStart_max`	time	Maximum random delay before transmitting within a slot
`ttxIdle_min`	time	Minimum idle time between transmissions within a slot
`ttxIdle_max`	time	Maximum idle time between transmissions within a slot
`enableSatDetect`	bool	Enable satellite detection mode before transmitting
`satelliteDetectionProbability`	double	Probability (0–1) of detecting a satellite that is actually in view
`minimumElevation`	double	Minimum elevation angle (degrees) for a satellite to be detectable
`Ndetect`	int	Number of detection batches per slot
`NsdSync`	int	Detection periods per batch
`tsdStart_min`	time	Minimum delay before the first detection attempt in a slot
`tsdStart_max`	time	Maximum delay before the first detection attempt in a slot
`tsyncIdle`	time	Idle time between detection periods in a batch
`tsdIdle`	time	Idle time between detection batches
`detectInitialListen`	double	Initial listen duration (seconds)
`detectSuccessExtraMin`	double	Minimum additional listen time after a successful detection (seconds)
`detectSuccessExtraMax`	double	Maximum additional listen time after a successful detection (seconds)
`detectMissExtra`	double	Additional listen time after a missed detection (seconds)
`neededLocalisation`	bool	`true` = spread transmissions over successful windows (localisation mode); `false` = burst on first detection
`satDetectMaxSuccessfulWindows`	int	Maximum detection windows in which to transmit (localisation mode)
`satDetectTxPerSuccessfulWindow`	int	Transmissions per successful detection window
`satDetectBurstTxCount`	int	Number of transmissions in a burst (burst mode)
`satDetectCloseWindowAfterWindowTxDone`	bool	Stop remaining slots once the target number of transmissions is reached
`enableSatDetectFallback`	bool	Automatically switch to blind mode when detection success rate is insufficient
`fallbackWindowSize`	int	Number of recent slots used to evaluate the detection success rate
`fallbackTargetRatio`	double	Target detection success ratio; fall back to blind if below this
`fallbackDisableMarginPercent`	double	Disable sat-detect when rate falls this percentage below target
`fallbackEnableMarginPercent`	double	Re-enable sat-detect when rate rises this percentage above target (can be negative)
`fallbackBackoffMaxLevel`	int	Maximum exponential backoff level for re-enabling sat-detect
`fallbackBackoffFailuresToIncrease`	int	Consecutive fallback failures before increasing the backoff level
`fallbackBackoffBaseWaitSlots`	int	Base number of slots to wait at backoff level 0

Terminal — Physical Layer¶

Path prefix: *.terminal[*].phy.radio.*

Parameter	Type	Description
`transmitter.power`	power	Uplink transmit power (e.g., `10mW`, `20dBm`)
`transmitter.centerFrequency`	frequency	Carrier frequency (e.g., `402MHz`)
`transmitter.bandwidth`	frequency	Channel bandwidth (e.g., `100kHz`)
`transmitter.preambleDuration`	time	Preamble duration; used by the receiver for detection
`receiver.centerFrequency`	frequency	Center frequency to listen on
`receiver.bandwidth`	frequency	Receive bandwidth
`receiver.sensitivity`	power	Receiver sensitivity (reference only; actual decoding uses C/N₀ model)
`antenna.typename`	string	Antenna module type (e.g., `"CustomAntenna"`)

Terminal — Mobility¶

Path prefix: *.terminal[*].mob.*

Parameter	Type	Description
`centerLatitude`	double	Latitude (degrees) of the deployment center
`centerLongitude`	double	Longitude (degrees) of the deployment center
`deploymentRadius`	double	Radius (degrees) for random placement around the center; `0.0` = fixed position

Satellite — Orbital Parameters¶

Path prefix: *.satellite[*].NoradModule.*

Parameter	Type	Description
`inclination`	double	Orbital inclination (degrees)
`altitude`	int	Orbital altitude (km)
`eccentricity`	double	Orbital eccentricity
`raan`	double	Right Ascension of Ascending Node (degrees)
`meanAnomaly`	double	Mean anomaly at epoch (degrees)
`argPerigee`	double	Argument of perigee (degrees)
`epochYear`	int	Epoch year (2-digit, e.g., `25` for 2025)
`epochDay`	double	Epoch day of year (fractional)
`planes`	int	Number of orbital planes
`satPerPlane`	int	Number of satellites per plane

Satellite — DSL Radio¶

Path prefix: *.satellite[*].phyDSL.radio.*

Parameter	Type	Description
`receiver.centerFrequency`	frequency	Frequency to listen for terminal uplinks
`receiver.bandwidth`	frequency	Receive bandwidth
`receiver.typename`	string	Receiver module type (e.g., `"CustomReceiver"`)
`transmitter.typename`	string	Transmitter module type
`antenna.typename`	string	Antenna module type

Radio Medium¶

Path prefix: **.radioMedium.*

Parameter	Type	Description
`typename`	string	Medium type (use `"CustomMedium"`)
`minimumElevationTermSat`	double	Minimum elevation (degrees) for terminal-satellite links
`useFieldMask`	bool	Enable terminal-side field mask (horizon obstruction) on terminal-satellite links
`fieldMaskFile`	string	Field mask CSV path (`Azimuth,Elevation,Attenuation`); read only when `useFieldMask` is `true`. `-1` attenuation = blocked link; other values = partial loss applied to received power
`backgroundNoise.power`	power	Ambient noise power
`analogModel.typename`	string	Analog model type (use `"CustomPHYAnalogModel"`)
`analogModel.pathLossExponent`	double	Path loss exponent (2 = free space)
`analogModel.rxAntennaGain_a`	double	Quadratic coefficient of receive antenna gain polynomial
`analogModel.rxAntennaGain_b`	double	Linear coefficient
`analogModel.rxAntennaGain_c`	double	Constant coefficient
`analogModel.txAntennaPatternAdjustement_dB`	double	Fixed gain offset for transmit antenna pattern (dB)
`analogModel.obstructionLossdB`	power	Additional obstruction loss
`analogModel.enableDoppler`	bool	Enable Doppler shift computation
`pathLoss.typename`	string	Path loss module (use `"CustomPHYPathLoss"`)
`pathLoss.polarizationLoss`	power	Polarization mismatch loss
`pathLoss.fadingSigma`	power	Log-normal fading standard deviation
`pathLoss.receiverSystemLoss`	power	Receiver chain loss
`pathLoss.decodingImplementation`	power	Demodulation/decoding implementation loss
`pathLoss.noiseFigureEnhancement`	power	Noise figure penalty

Topology Control¶

Path prefix: *.topologyControl.*

Parameter	Type	Description
`updateInterval`	time	How often satellite positions and links are recomputed
`walkerType`	string	Constellation type: `"STAR"` or `"DELTA"`
`timeSliceLength`	time	Duration of each time slice for pre-computed routing

Parameter	Type	Description
`**.minimumElevation`	double	Minimum elevation (degrees) for satellite-to-ground-station links
`**.intraPlaneIslDisabled`	bool	Disable intra-plane ISLs
`**.interPlaneIslDisabled`	bool	Disable inter-plane ISLs
`**.allowUnevenPlanes`	bool	Relax validation for constellations with unequal plane sizes
`.*.numGroundLinks`	int	Maximum simultaneous ground links per satellite

Ground Station¶

Path prefix: *.station[*].*

Parameter	Type	Description
`mobility.latitude`	double	Station latitude (degrees)
`mobility.longitude`	double	Station longitude (degrees)
`mobility.altitude`	double	Station altitude above sea level, in meters (default `0`)
`fieldMaskFile`	string	Per-station field mask CSV (`Azimuth,Elevation,Attenuation`). A satellite seen in a blocked region (`-1`) creates no feeder link. Empty string disables the mask
`groundStationId`	int	Station identifier

Simulation Control¶

Parameter	Type	Description
`sim-time-limit`	time	Total simulated time
`repeat`	int	Number of independent replications
`seed-0-mt`	int	Random seed for the first RNG stream
`simtime-resolution`	int	Precision exponent (e.g., `-11` = picosecond resolution)
`cpu-time-limit`	time	Wall-clock time limit for the simulation process