THREE estimates the power spectral density of a multivariate discrete-time stochastic process.
Such estimates can achieve high resolution in frequency bands defined by the user.
Three examples are provided. In Example1 we estimate a spectral line immersed in colored noise.
In Example2 we estimate two spectral lines in two different channels. In Example3 we estimate
the sunspot cycle by detecting the corresponding spectral line.
For more details see the papers:
http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6909016
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6676836&queryText=a%20new%20family%20of%20high%20resolution&newsearch=true
http://link.springer.com/article/10.1007/s00498-013-0118-2