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Random signal can not use the precise mathematical relationships that describe the signal, but his changes are subject to statistical laws 更多：https://www.bmcx.com/ , probability and statistics features to describe. Called a sample function of random signal is done by the time course of long observation records

Random signals are signals that cannot be described with a precise mathematical formula, but he changes subject to statistical law 更多：https://www.bmcx.com/ , statistical characteristics of probability can be used to describe. Random signals by time history did the Minister time logger is called sample function

Random signal is cannot use the accurate mathematical relationship description of the signal, but his changes to obey statistical rule 更多：https://www.bmcx.com/ , can be used to describe the probability statistical characteristics. According to the time history of random signal of the long observation records called sample function

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