least-squares spectral analysis
...that least-squares spectral analysis is a method for estimating a frequency spectrum, based on a least squares fit between data and trigonometric functions?
...that <b id="mwDgQ"><a href="./Least-squares_spectral_analysis" id="mwDgU" rel="mw:WikiLink" title="Least-squares spectral analysis">least-squares spectral analysis</a></b> is a method for <a class="mw-redirect" href="./Estimate" id="mwDgY" rel="mw:WikiLink" title="Estimate">estimating</a> a <a class="mw-redirect" href="./Frequency_spectrum" id="mwDgc" rel="mw:WikiLink" title="Frequency spectrum">frequency spectrum</a>, based on a <a href="./Least_squares" id="mwDgg" rel="mw:WikiLink" title="Least squares">least squares</a> fit between data and <a class="mw-redirect" href="./Trigonometric_function" id="mwDgk" rel="mw:WikiLink" title="Trigonometric function">trigonometric functions</a>?