I am trying to develop in java the sinusoidal regression algorithm described by Jean Jacquelin: https://fr.scribd.com/doc/14674814/Regressions-et-equations-integrales For my use, the '$a$' parameter is useless. So I modified equations 1 to 24 (pages 21 to 2) accordingly.
In my implementation, sometimes it works very well. Sometimes it fails. I'm having trouble finding the bug when rereading.
Could anyone test these values? (which arrive at $\omega = 0.648$ and $\phi = 1.35$ while by hands, $0.81$ and $4.2$ seem closer to reality)
Thanks in advance
\begin{array} {|r|r|}\hline { 11.87579, 0.94993 } & { 12.24713, 0.99985 } & { 12.32558, 0.99891 }& { 13.27073, 0.68795 }& { 13.43532, 0.58538 }& { 13.92164, 0.22937 } \\ \hline { 14.89322, -0.52740 }& { 15.00233, -0.60033 }& { 15.53425, -0.87948 }& { 16.16189, -0.99992 }& { 16.35611, -0.98563 }& { 16.67109, -0.91111 } \\ \hline { 17.36284, -0.55274 }& { 17.78438, -0.24178 }& { 18.07335, -0.01014 }& { 19.06969, 0.71518 }& { 19.87356, 0.99247 }& { 19.88252, 0.99333 }& \\ \hline { 20.65666, 0.87199 }& { 21.1622, 0.60500 }& { 21.44818, 0.40604 }& { 21.99664, -0.02612 }& { 22.01315, -0.03949 }& { 23.00046, -0.74412 } \\ \hline { 23.85489, -0.99922 }& { 24.54297, -0.86888 }& { 24.60116, -0.84459 }& { 25.30864, -0.41936 }& { 25.59536, -0.19915 }& { 25.63645, -0.16643 } \\ \hline { 26.63189, 0.59646 }& { 27.62896, 0.99231 }& { 28.25732, 0.92683 }& { 29.20814, 0.40386 }& { 29.96497, -0.19601 }& { 30.18675, -0.36807 } \\ \hline { 31.00362, -0.86169 }& { 31.08351, -0.89270 }& { 31.46208, -0.98709 }& { 31.89921, -0.98138 }& { 32.84455, -0.57437 }& { 33.45334, -0.11844 } \\ \hline \end{array}