Improved born inversion for frequency‐swept microwave imaging of dielectric cylinder

Abstract

The effect of timing jitter is evaluated using an improved Gaussian approximation for an optically preamplified PPM receiver. For the parameters considered a potential sensitivity of 23.6 photons/bit is demonstrated in the unjittered case with the jittered optimum at worst only 1 dB less sensitive. Both these results surpass the fundamental sensitivity limit of an OOK NRZ system. The analysis predicts that wrong-slot and jitter errors first become dominant at a coding level higher than that suggested by an earlier model. 0 ABSTRACT This article presents an efficient model for the prediction of cross-talk effects on generator wires and on both the near and far ends ofreceptor wires of multiconductor transmission lines. The parameter of interest is the average power output of the generator wire, where all effects of multiconductor transmission-line parameters are included and the cross talk on the receptor wire is also estimated. This model was used in a printed circuit board (PCB) with microstbp lines, and good agreement between theoly and measurements was obtained. 0 1995 John Wiley & Sons, h e .

Frequency-swept microwave imaging of a lossy dielectric cylinder in a lossy medium

“…Improved Born inversion [4] that corrects the length of the cross section from the conventional Born inversion is used here for the numerical calculations. Figure 1 shows that the reconstructed profiles of E and U of the circular cylinder closely approximate the original shapes and profiles.…”