Physics · Signals and Systems
Which of the following statements is true about the autocorrelation function (ACF) of a wide-sense stationary (WSS) random process?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The ACF is always zero for a WSS process.
- 2The ACF depends on the mean of the process at each point in time.
- 3The ACF is time-dependent and varies explicitly with absolute time.
- 4The ACF depends only on the time difference (lag) and not on the absolute time.✓
Correct answer
The ACF depends only on the time difference (lag) and not on the absolute time.
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