The fundamentals of polarization are explained, including the principles of wave polarization
, and polarization state representations.
For the linearly polarized backscattering cross section, the quad-polarized covariance matrix is used for the ocean surface wave polarization
signatures, as follows :
Conventional devices for controlling wave polarization
including birefringence materials and optically active materials are bulky, and their bandwidth is narrow.
where [V.sub.ij] are the shear wave velocities in materials with i indicating the wave propagation direction and j the wave polarization
The investigations on the adverse effects of electromagnetic fields on human body should encompass such factors as the field strength, frequency, and exposure environment, time factor of exposure, source structure, geometry and size of tissue and wave polarization
Advantages of the method are that wave polarization
is evaluated by using three-component signals in the time and frequency domains and that the polarized waves can thus be detected with low S/N, allowing linear and elliptical polarization to be distinguished, whereas it is difficult to identify the reflected waves by direct use of the waveform because of its very low amplitude.
1997) allowed to estimate the direction of shear wave polarization
in 6 regions that should be parallel or sub parallel to the maximum horizontal compressive stress (Kaneshima, 1990).
Lerner, "A wave polarization
converter for circular polarization," IEEE Transactions on Antennas and Propagation, vol.
Thus, the effective manipulation of EM wave polarization
is highly desirable .
Chapter 3 presents representations of wave polarization
, which includes the general harmonic wave, polarization ellipse for plane waves, power density, rotation rate of the field vector, the polarization ratio, contours of the constant axial ratio and tilt angle.
It has not been made clear which radio wave polarization
vertical or horizontal exhibits better characteristics in land mobile communication environments.
where [R.sub.out] = R(x, [y.sub.obs], z), [R.sub.in] = R(x, -[y.sub.obs], z), [[delta].sub.wg] is the Kronecker delta, g = [perpendicular to], [parallel] and w = [perpendicular to], [parallel] represent the incident and scattered wave polarization
, respectively, and