Pisma v Zhurnal Tekhnicheskoi Fiziki, 2025 Volume 51, Issue 9,Pages 9–10(Mi pjtf7561)
Optimization of the threshold level in the intermittent emission mode according to the criterion of the minimum probability of erroneous data reception on the communication line “spacecraft – ground tracking station”
Abstract:
The dependence of the reliability of data reception under conditions of tropospheric lognormal amplitude fluctuations of millimeter radio waves on the line “spacecraft – ground tracking station” on the threshold level in the intermittent radiation mode with coherent reception of signals is considered. An estimate of the optimal threshold level of the transmitting device is made according to the criterion of the minimum probability of error. It is shown that at the estimated level not only the minimum probability of errors in the received data is ensured, but also the energy requirements for the transmitter are reduced. The presented results can be used in the practical implementation of effective broadband communication channels “spacecraft – ground tracking station” in the mm range.
Keywords:tropospheric channel, millimeter waves, lognormal amplitude fluctuations, intermittent communication, radio link utilization factor, optimal threshold level, transmitter energy consumption.
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