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In this paper we compare the performance of grooved and flat ZnS/6LiF scintillators in a wavelength-shifting-fiber (WLSF) detector. Flat ZnS/6LiF scintillators with the thickness L=0.2−0.8 mm were characterized using photon counting and pulse-height analysis and compared to a grooved scintillator of approximately 0.8 mm thick. While a grooved scintillator considerably increases the apparent thickness...
This paper investigates the performance of the protograph based low-density parity-check (LDPC) codes for two dimensional (2D) inter symbol interference (ISI) channels with magnetic recording density. The protograph LDPC codes have been shown to possess excellent error performance over AWGN channel [1] and over partial response channel [2]. Moreover, the protograph structure that realizes linear encoding...
We have developed a wavelength-Shifting-fiber Scintillator Detector (SSD) with a 0.3 m2 area per module. Each module has 154 × 7 pixels and a 5 mm × 50 mm pixel size. Our goal is to design a large area neutron detector offering higher detection efficiency and higher count-rate capability for Time-Of-Flight (TOF) neutron diffraction in the Spallation Neutron Source (SNS). A ZnS/6LiF scintillator combined...
A novel micromachined thermopile IR detector module with filter and detector cointegrated by wafer level Au-Au vacuum bonding is presented in this paper. Filter is directly bonded on the IR detector to miniaturize the detector module, as well as reduce the packaging cost. Because the gas convection will be eliminated in vacuum, a better thermal isolation can be achieved for the vacuum packaged IR...
In this paper, we propose a hybrid approach for addressing feature-based matching problem. We aim to obtain robust and accurate correspondence between features from image frames under unknown and unstructured environments. The approach incorporates image texture analysis, 2-D analytic signal theory and color modeling. It takes advantage of geometric invariant property in texture and monogenic signal...
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