SUBSTANCE: optical system includes main concave mirror, aperture diaphragm and lens compensator installed in converging bundle of rays and photodetector. Zone of ray propagation from diaphragm to photodetector is limited by light-proof tube. Light- proof tube and aperture diaphragm are cooled and ...
Light- proof tube and aperture diaphragm are cooled and diameter D of optical surface of main mirror corresponds to condition D>fd/(f-L)+2Lsinω, where f is focal distance of main mirror; d is diameter of aperture diaphragm; L is distance from main mirror to aperture diaphragm; &...
Furthermore, color is understood more as a spectral signal instead of only three-dimensional coordinate values. Spectral understanding is necessary because many applications are using the electromagnetic spectrum outside the human visual range, in the UV and IR regions. In this case the only useful...
Define visibility range. visibility range synonyms, visibility range pronunciation, visibility range translation, English dictionary definition of visibility range. The horizontal distance at which a large dark object can just be seen against the horizon
Jane harmonic detection technology is an important content of power system harmonic governance,the paper proposes an improved ITD method combined with singular value difference spectrum of fast high precision detection.By improving the I... Y Zhang,Y Zhang,J Wu 被引量: 0发表: 2015年 A Method ...
of radio spectrum Modular design - easily expandable Wide range of MPT 1327 trunked features Open trunked protocol - not proprietary [...] china-environmental.com 亮点: 灵活,可靠的集群无线网络 经过验证的可靠性 成本效益 高效网络 - 决策最大限度地利用无线电频谱 模块化设计 - 便于扩展邮电部1327...
complexities to realize as well; that is, it needs a specific technique to handle communication packet structure in the aspect of signal processing, and require a little more complicated source of RF signal, e.g., an impulse radio (IR) ultra-wideband (UWB) and chirp spread spectrum (CSS)....
A fast and direct method, based on infrared spectroscopy, for quantitative determination of starch short-range structure has been developed. The IR spectrum of starch is sensitive to changes in short-range structure in the CC and CO stretching region at 1300-800 cm1. The IR absorbance band at...
The power spectrum of the evolving solar wind shows evidence of a spectral break between an inertial range of turbulent fluctuations at higher frequencies ... RM Nicol,SC Chapman,RO Dendy - 《Astrophysical Journal》 被引量: 28发表: 2009年 ...
A flare in the millimetre to IR spectrum of 3C273 Over the past two years some of us (E.I.R., P.A.R.A., W.K.G., M.G.S. and I.G.N.) have been monitoring the millimetre and submillimetre spectrum of 3C273 (r... EI Robson,WK Gear,PE Clegg,... - 《Nature》 被引量:...