div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: Least squares AVF inversionThis highlights that solving for ac and aQ is an overdetermined problem which we can solve by casting as a least-squares minimization problem Equation 2 src=https:reader033fdocumentsinreader033viewer20220607206080d469b3ffd3543176f600html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdiv