A novel multipath dispersion reduction technique based on controlled-polarization optical wireless link set-up

The detection characteristics of an indoor-optical communication system, which utilizes infrared radiation as carrier has been explored and enhanced for telemedicine, and wireless local area network applications. The novelty of the presented technique consists in the fact that multipath dispersion can be reduced under controlled polarization link setup. The design of such a network is based on the specifications set by the IEEE 802.11 standard. Significant noise reduction has been achieved by utilizing wavelet transform processing algorithms

Signal-to-noise measurements utilizing a novel dual-energy multimedia detector

Dual-energy measurements are presented utilizing a novel slot-scan digital radiographic imaging detector, operating on gaseous solid state ionization principles. The novel multimedia detector has two basic functional components: a noble gas-filled detector volume operating on gas microstrip principles, and a solid state detector volume. The purpose of this study is to investigate the potential use of this multimedia detector for enhanced dual-energy imaging. The experimental results indicate that the multimedia detector exhibits a large subtracted signal-to-noise ratio. Although the intrinsic merit of this device is being explored for medical imaging, potential applications of the multimedia detector technology in other industrial areas, such as aerospace imaging, aviation security, and surveillance, are also very promising

A sensitive optical polarimetric imaging technique for surface defects detection of aircraft turbine engines

The design of an optical polarimetric imaging system, aimed to detect cracks or structural defects on the surface of rotating aircraft engine shafts, is presented: The experimental results, clearly indicate that high. signal-to-noise ratio signals can be obtained, so that it minimizes the use of processing techniques

Signal Evaluation of a Novel Dual-energy Multimedia Imaging Sensor

In this study, experimental results on the signal quality of a multimedia imaging detector, operating on gaseous solid state ionization principles, with specific emphasis on single X-ray exposure dual-energy radiography, are presented. The results of this study indicate that the multimedia detector technology exhibits excellent signal characteristics suitable for a large number of imaging applications

Optimization of the Temporal Response of II-IV Direct Type Semiconductor Detectors for Flat-Panel Pulsed X-Ray Imaging

15nonenoneG. C. GIAKOS; R. GUNTUPALLI; R. NEMER; J. ODOGBA; N. SHAH; S. VEDANTHAM; S. SURYANARAYANAN; S. CHOWDHURY; A. G. PASSERINI; K. MEHTA; S. SUMRAIN; N. PATNEKAR; K. NATARAJ; E. EVANS; RUSSO F.G. C., Giakos; R., Guntupalli; R., Nemer; J., Odogba; N., Shah; S., Vedantham; S., Suryanarayanan; S., Chowdhury; A. G., Passerini; K., Mehta; S., Sumrain; N., Patnekar; K., Nataraj; E., Evans; Russo, Fabrizi

Optimization of the Temporal Response of Ii-vi Direct Type Semiconductor Detectors for Flat-panel Pulsed X-ray Imaging

The rising and falling edges of detected signal pulses have been measured utilizing X-ray ionization of a planar Cd1-xZnx Te system under different irradiation geometries, at different detector thicknesses, and applied electric fields. The experimental results of this study indicate that the time response of the CdZnTe based X-ray system is suitable for digital pulsed radiographic application