Since the intermittent sampling is done in the fast time, false point scatterers
will be introduced only in the down-range where each point spread function (PSF) is a scaled sinc function.
SNR performance values of the circular and cylindrical scatterers
At 10GHz At 10GHz Maximum SNR = 80dB Maximum SNR = 81dB Circle Minimum SNR = -39dB Cylinder Minimum SNR = -27dB
The first bracketed quantity in the above equation can be assumed to be constant for the purpose of comparing solid, liquid and gaseous scatterers
. Now for the purpose of medical imaging, it can be assumed that the compressibility of a solid particle is much less than that of the surrounding medium, whereas, the density of the particle is greater.
Let us consider the scatterer
as a second-order nonlinear system (S) excited with x(t), and where the response [y.sub.NL](t) is given by [y.sub.NL](t) = NL[x(t)] = [N.sub.1]x(t) + [N.sub.2][x.sup.2](t), where [N.sub.1] and [N.sub.2] are respectively linear and second-order coefficients.
The monotonous character of the rise is due to the configuration averaging process that makes [??][C.sub.s][??] and [??]S[??] intrinsic properties of the system that do not depend on the relative positions between the scatterers
but rather on an average distance, which is only function of the filling fraction.
Field fluctuation spectroscopy in a reverberant cavity with moving scatterers
where F([DELTA]z, [V.sub.hor]) is the neutron flux through the slit, [alpha] is the coefficient responsible for a finite scatterer
efficiency and for the approximations used in the model, [[beta].sub.n] is a population of nth quantum state, [V.sub.hor] is a neutron horizontal velocity component, and L is the mirror length along the neutron beam axis.
For the calculation of the considered mechanical system the real constructive parameters of the investigated seeding opener with the oscillating scatterer
of the grainfertilizer seeder have been used.
In the last few decades, estimating the locations of point-like scatterers
in open space have caught enormous attention.
J,(r) = Xr)E\ot (r), here note that the contrast function of scatterer
is [chi](r) = [[epsilon].sub.r](r)/[[epsilon].sub.0] - 1 and the total electric field is [E.sup.tot.sub.i](r) = [E.sup.inc.sub.i](r) + [E.sup.sca.sub.i](r) for r [member of] D .
To be more precise, we also introduce an additional disorder mechanism, random substitutions of scatterer
potentials, as described below.
where [[sigma].sub.l]([x.sub.l], [y.sub.l]) and ([x.sub.l], [y.sub.l]) are the complex reflection coefficient and position of the l-th scatterer
, respectively; c is the light velocity; [R.sub.l]([x'.sub.m], [y'.sub.n]) is the path delay from the transceiver at ([x'.sub.m], [y'.sub.n]) to the l-th scatterer
and is of the form as