Why are pulse pairs used in DME instead of single pulses?(a) Reduce interference(b) Better range(c) Reduced noise(d) RedundancyThe question was posed to me at a job interview.I would like to ask this question from Point Source Radio Systems in division Terrestrial Radio Navigation System of Avionics

Why are pulse pairs used in DME instead of single pulses?(a) Reduce in

1.	Why are pulse pairs used in DME instead of single pulses?(a) Reduce interference(b) Better range(c) Reduced noise(d) RedundancyThe question was posed to me at a job interview.I would like to ask this question from Point Source Radio Systems in division Terrestrial Radio Navigation System of Avionics
Answer» RIGHT OPTION is (a) REDUCE interference Easy EXPLANATION: Pulse systems can easily interfere with each other even if they are of different frequencies. Paired pulses are used in DME to reduce interference with other pulsed systems.

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