By Richard H. Vollmerhausen
Advancing know-how in detector arrays, flat panel screens, and electronic photo processing presents new possibilities to extend imaging functions and increase procedure functionality. Technical managers and layout engineers are confronted with comparing the price, weight, and function of an ever-expanding choice of expertise innovations. This instructional textual content presents the speculation, tactics, and data essential to overview and examine the functionality of obtainable imaging applied sciences. half I updates the sooner paintings awarded in Analysis of Sampled Imaging structures (2000). half II discusses functionality overview of electro-optical imagers. half III presents desktop courses (on a supplemental CD-ROM) and updated info on detector arrays, optics, and reveal thoughts.
The e-book covers a number of exhibit codecs and interfaces, and offers certain details on to be had focal airplane arrays (FPAs). specific emphasis is put on conception and perform for the big variety of accessible infrared FPAs. applied sciences represented comprise InSb, HgCdTe, QWIP, and uncooled thermal arrays. info is supplied at the quantum potency, blur, crosstalk, and noise features of every know-how. The detector and array dimensions of accessible FPAs are supplied. the data on optics, exhibit, and FPA subassemblies permits the version person to make fast and reasonable functionality checks of electro-optical imager designs
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Extra info for Analysis and evaluation of sampled imaging systems
Two samples are shown by asterisks at locations (4,2) and (6,1). , are not illustrated. For each sample, a sinc wave is generated with the peak equal to the sample value and period such that the sinc wave goes through zero amplitude at all other sample points. 21(b) To generate the reconstructed waveform, all sinc waves are added together. The sum of the two sinc waves shown in Fig. 21(a) is shown here as the solid dark line. This example used only two samples. In the general case, sinc waves are generated for all samples, and the sum of all sinc waves is the reconstructed waveform.
The series in Eq. 23) is used to reconstruct the function. Each term in the series is a sample function, also referred to as a sinc function or sinc wave. 20 If the replicas of F(ω) do not overlap, then an ideal filter that cuts off at half the sample frequency will exactly recover the original function. 21(a) Example showing sinc wave reconstruction required by the sampling theorem. 0. Two samples are shown by asterisks at locations (4,2) and (6,1). , are not illustrated. For each sample, a sinc wave is generated with the peak equal to the sample value and period such that the sinc wave goes through zero amplitude at all other sample points.
S. analog video (RS-170) High-resolution analog video HDTV Computer European analog video European component digital video Standard Horiz. Vert. 3 Atmospheric Transmission and Turbulence Expected environment is one important factor in selecting an imager for a task. For example, atmospheric transmission in a high-humidity hot environment is better for MWIR than for LWIR. On the other hand, the longer wavelengths of LWIR improve turbulence MTF. The program provides a selection of atmospheres so that the user can evaluate the impact of atmosphere on imager performance.