  Purpose. To obtain the interference immunity of the data exchange by spread
spectrum signals with variable entropy of the telemetric information data
exchange with autonomous mobile robots.
  Methodology. The results have been obtained by the theoretical investigations
and have been confirmed by the modeling experiments.
  Findings. The interference immunity in form of dependence of bit error
probability on normalized signal/noise ratio of the data exchange by spread
spectrum signals with variable entropy has been obtained.It has been proved
that the interference immunity factor (needed normalized signal/noise ratio) is
at least 2 dB better under condition of equal time complexity as compared with
correlation processing methods of orthogonal signals.
  Originality. For the first time the interference immunity in form of
dependence of bit error probability on normalized signal/noise ratio of the
data exchange by spread spectrum signals with variable entropy has been
obtained.
  Practical value. The obtained results prove the feasibility of using variable
entropy spread spectrum signals data exchange method in the distributed
telemetric information processing systems in specific circumstances.

Robotics