Operating Manual Vol 1 - ES Documentation

Fading SimulationSMIQFREQ RATIOInput value of the ratio of the actual Doppler Frequency shift to the DopplerFrequency setting with Ricean fading or Pure Doppler switched on. The actualDoppler Frequency shift depends on the simulated angle of incidence of thediscrete component.IEC/IEEE-bus command :SOUR:FSIM:PATH6:FRAT 1ϕ/ deg 0 90 180FREQ RATIO -1 0 +1ϕFig. 2-40Doppler Frequency shift with moving receiverCONST PHASESPEEDDOPPLER FREQPATH LOSSDELAYEntry value of CONST PHASE with CPHAS fading switched on. Thecorresponding path is multiplied by this phase.IEC/IEEE-bus command :SOUR:FSIM:PATH6:CPH 20.0Input value of the speed v of the moving receiver.The Doppler frequency f D (DOPPLER FREQ) is calculated from the speed andthe RF frequency f RF . When changing SPEED the parameter DOPPLERFREQ will be automatically adjusted. This parameter can be coupled, seeparameter COUPLED PARAMETERS...Range:vmin003 . ⋅10 9 m/s2=vf RFv max ≤ 99999km / hmaxIEC/IEEE-bus command :SOUR:FSIM:PATH1:SPE 100479 ⋅10 9 m / s2=Input value of the amount of the maximum Doppler Frequency shift (cf. FREQRATIO).When changing the Doppler Frequency f D the parameter SPEED will beautomatically adjusted.With c = 2. 998 ⋅10 8 m/ s it isvcf=fDRFIEC/IEEE-bus command :SOUR:FSIM:PATH2:FDOP 92.3Input value of the attenuation of the path.IEC/IEEE-bus command :SOUR:FSIM:PATH3:LOSS 3Input value of the signal delay in the path.IEC/IEEE-bus command :SOUR:FSIM:PATH3:DEL 14.5f RF1125.5555.03 2.76 E-9