This paper discusses the transformation of the various matrixes in application of electromagnetic theory,which are coordinate matrix transformation,operator matrix transformation and field matrix transformation.

In additional, the coordinate transformation matrixes on 3D b.

The vector diffraction methods to the sub wavelength gratings, including Fourier Model method, C method and Rayleigh method, which are the most comprehensive and popular ones, have been consummated, while the limitation of these methods are also obvious.

In order to solve the problem of direct sequence spread spectrum signal s check and recognition,a blind estimate algorithm is proposed,it based on cyclic spectrum theory and matrix transform.

A simple blind estimate algorithm is proposed based on matrix transform.

Some of these differential equations as non-conventional(non-formula method),use of for-element method,generating function method,the matrix transformation method,such as special effects have been ideal;the way of thinking so that discrete mathematics,linear algebra,mathematical analysis of different mathematical knowledge together with a certain reference value.