Mexicana de Aviación leased Boeing 767-200ER. In addition, Mexicana announced a Mexico City to Madrid route to compete with Aeromexico and compliment its partner's (Iberia) existing service. Mexicana announced that it will begin service to Madrid beginning in Feb/09 through the acquisition of 2 Airbus A330-200 not taken by XL due to bankruptcy. These aircraft types are well suited for medium-density, long-range travel. The company also unveiled the new colorful livery on November 27, along with "Mexicana Click" brand-new name for Click Mexicana. On February 4, 2009, Mexicana won a concession to operate a new feeder airline to complement the routes currently covered
S transform S transform S transform as a time–frequency distribution was developed in 1994 for analyzing geophysics data. In this way, the "S" transform is a generalization of the short-time Fourier transform (STFT), extending the continuous wavelet transform and overcoming some of its disadvantages. For one, modulation sinusoids are fixed with respect to the time axis; this localizes the scalable Gaussian window dilations and translations in "S" transform. Moreover, the "S" transform doesn't have a cross-term problem and yields a better signal clarity than Gabor transform. However, the "S" transform has its own disadvantages: the clarity is worse than Wigner distribution function