### time series analysis

(analysis of data points collected uniformly separated times)

**Time series analysis** is analysis of data representing
a function of time, collected at specific points in time
that are separated by a uniform interval.
Such analysis is used in astronomy and numerous other fields, including
signal processing, communications engineering, and weather forecasting.

There are many techniques, which can be classified as:

- frequency domain (e.g., spectral analysis).
- Time domain.

In astronomy, data is often collected at irregular intervals,
so the *time series analysis* used must accommodate that.
Intervals involved can be fractions of a second or can
be years, e.g., using historical data.

(*mathematics,method*)
http://en.wikipedia.org/wiki/Time_series

**Referenced by:**

secular

spectral density

index