拱墙
发表于 2025-3-25 04:33:21
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有帮助
发表于 2025-3-25 10:21:11
Detection of Weak Optical Signals with Photodetecting Assemblies Based on Avalanche Photodiodes,e into account the fluctuation of the number of quanta in this signal (Sect. 6.2). In a special mode (photon count mode) the avalanche photodiode is capable of detecting single photons, approaching the fundamental quantum detection threshold (Sect. 6.3)
Obedient
发表于 2025-3-25 15:00:55
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精致
发表于 2025-3-25 17:09:52
Book 1997 in IR technologies, designers of optoelectronic detecting, guiding and tracking systems, systems for IR direction finders, lidars, lightwave communication systems, IR imagers. All these specialists are united by one common purpose: they are all striving to catch the weakest possible optical signal.
corporate
发表于 2025-3-25 20:24:53
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同时发生
发表于 2025-3-26 01:04:06
Signal and Noise in Photodetecting Assemblies,tor and the amplifier. Now we can embark upon the main topic of the present book. First we shall meet the protagonist — the pulsed optical signal, and then the antagonist — the noise which interferes with the detection of the signal. We shall follow the path of the signal and noise through the funct
Lumbar-Stenosis
发表于 2025-3-26 05:50:53
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Embolic-Stroke
发表于 2025-3-26 10:50:35
Signal Processing in Real Photodetecting Assemblies, of optimal processing (filtering) of the signal, the ways used to separate the signal from the noise. This, however, is theory. How is the signal processed in practice, in real PDAs? To what extent is the real filtering inferior to the idealized model? These questions constitute the topic of the pr
Infirm
发表于 2025-3-26 12:41:44
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职业
发表于 2025-3-26 20:44:59
Detection and Processing of Optical Signals in Matrices,ngle-element photodetectors and PDAs. Using multielement devices and increasing the number of elements it is possible to improve resolution and to simplify the mechanical scanning system, which may be completely replaced with the electronic scanning. For the target, however, which has been our conce