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Definition Edit

frequency instability ie

[t]he spontaneous and/or environmentally caused frequency change of a signal within a given time interval.[1]

Overview Edit

"Generally, there is a distinction between systematic effects such as frequency drift and stochastic frequency fluctuations. Special variances have been developed for the characterization of these fluctuations. Systematic instabilities may be caused by radiation, pressure, temperature, and humidity. Random or stochastic instabilities are typically characterized in the time domain or frequency domain. They are typically dependent on the measurement system bandwidth or on the sample time or integration time."[2]

References Edit

  1. Framework for Cyber-Physical Systems, at 11.
  2. Id.

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