Raw Data Observer

This section contains a description of the SkydelRawDataObserverInterface supported by Skydel.

Real Time Raw Data

During simulation initialization, Skydel will ask for a SkydelRuntimeRawDataObserver* from every plug-in via the createRuntimeRawDataObserver method. It's mandatory to fully give the ownership of the returned pointer to Skydel. The create function also shares an ID to String map, for all enabled Constellations, and for all enabled Signals.

During simulation, Skydel will send raw data at 1 Hz via the pushRawData method for every signal of every space vehicle of every constellation that is currently being simulated with the following data structure:

TimedRawData	Definition	Unit
elapsedTimeMs	Simulation elapsed time	millisecond
svsData	Raw data by constellation	vector of ConstellationRawData

ConstellationRawData	Definition	Unit
id	Constellation identifier	-
svs	Raw data by space vehicle	vector of SVRawData

SVRawData	Definition	Unit
id	Signal identifier	-
rawDatas	Raw data by signal	vector of SignalRawData

SignalRawData	Definition	Unit
id	Space vehicle identifier	-
svElapsedTimeMs	Elapsed time of the SV at current simulation elapsed time	millisecond
position (x,y,z)	ECEF coordinates (meters) of the origin of the transmitted signal (satellite’s antenna phase center).	meter
positionError (x,y,z)	Error on the position	meter
range	Geometrical distance between the satellite’s and receiver’s antennas	meter
psr	Pseudorange	meter
adr	Accumulated doppler range	number of cycle
clockCorrection	Satellite's Clock Correction	second
clockNoise	Additional clock error not accounted for in navigation message	second
deltaAf0	Clock offset	second
deltaAf1	Clock drift	second/second
ionoCorrection	Ionospheric corrections	meter
tropoCorrection	Tropospheric corrections	meter
psrOffset	Pseudorange offset	meter
receiverAntennaAzimuth	Satellite’s azimuth from the receiver’s antenna position	radian
receiverAntennaElevation	Satellite’s elevation from the receiver’s antenna position	radian
receiverAntennaGain	Receiver’s antenna gain	dBi
svAntennaAzimuth	Receiver’s azimuth from the satellite’s antenna position	radian
svAntennaElevation	Receiver’s elevation from the satellite’s antenna position	radian
relativePowerLevel	Signal’s relative power level corresponding to the sum of the global power offset, the user’s power offset, the receiver’s antenna gain and the satellite’s antenna gain	dB
doplerFrequency	Doppler frequency due to satellites' and receivers' antennas dynamics'	hertz
psrChangeRate	Pseudorange rate due to satellites' and receivers' antennas dynamics'	meter/second
echoPowerLoss	Multipath power offset relative to Line of Sight (LOS) signal	dB
echoDopplerOffset	Multipath frequency offset relative to LOS signal	hertz
echoCarrierPhaseOffset	Initial phase offset in multipath relative to LOS signal	radian
echoPsrOffset	Multipath pseudorange offset	meter
receiverCarrierPhaseOffset	Phase offset caused by the receiver’s antenna phase pattern	radian
satelliteCarrierPhaseOffset	Phase offset caused by the satellite’s antenna phase pattern	radian
gpsTow	GPS time of week	second
gpsWeekNumber	GPS week number	-
sbas	SBAS time of the day	second
calibrationOffset	Offset applied to the signal during Wavefront simulation. Used to compensate for hardware differences between elements	meter
psrSatTime	The elapsed time of the simulation when the signal was emitted from the satellite	millisecond

Dynamic User Interface

Same as SkydelPositionObsereverInterface, see here for more detail.