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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 4. Отображено 4.
17-06-2015 дата публикации

Mixture component identification method based on terahertz absorption spectrum processing

Номер: CN104713845A
Автор: LI HONGGUANG, HAN ZHANSUO, YANG HONGRU, LIU RUIXING, YU BING, YU DONGYU, XIE QI, CHEN JUAN, KANG DENGKUI
Принадлежит:

The invention provides a mixture component identification method based on terahertz absorption spectrum processing, and belongs to the field of optical measurement. The method comprises the following steps: detecting components of a mixture by a terahertz absorption spectrum; firstly, obtaining a terahertz absorption spectrum of a mixture sample, deducting environment noise and background noise, and removing the effects caused by water vapor absorption changing along with the temperature; obtaining the terahertz absorption spectrum for identification, transferring a terahertz absorption spectrum database, and sequentially judging, identifying and deducting the terahertz absorption spectra of kinds of samples by template matching and absorption peak comparison methods; and judging the deducted absorption spectrum data until all components of the mixture are detected. By combination of the terahertz absorption spectrum in an experiment environment with the terahertz absorption spectrum in ...

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Номер записи: 1
27-06-2023 дата публикации

Large-aperture laser energy meter with high surface uniformity and precision and laser energy measuring method

Номер: CN116337223A
Автор: YU DONGYU, WU PEI, WANG JING, SANG PENG, DUAN YUANYUAN, YIN WANHONG, LU FEI, ZHANG BIAO
Принадлежит:

The invention belongs to the technical field of optical metrology, and discloses a large-aperture laser energy meter with high surface uniformity and precision, which comprises a shell and a probe assembly formed at an opening at one side of the shell, and is characterized in that the probe assembly comprises an absorber, a thermal diffusion layer, a sensor and a lining plate which are sequentially arranged from outside to inside; the heat diffusion layer is evenly attached to the back face of the absorber. The sensor adopts resistance wires, and a plurality of paths of resistance wires are uniformly fixed on the outer surface of the thermal diffusion layer. The invention also provides a laser energy measurement system and a measurement method. The surface uniformity of the energy meter is improved by optimizing the layout of the measurement sensor, increasing the acquisition channels and increasing the thermal diffusion layer behind the energy meter absorber, and the signal-to-noise ratio ...

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Номер записи: 2
24-06-2015 дата публикации

Terahertz detector parameter measuring device and measuring method

Номер: CN104729691A
Автор: LI HONGGUANG, YANG HONGRU, XUE ZHANLI, YUAN LIANG, KANG DENGKUI, YU DONGYU, LU FEI, HAN ZHANSUO, CHANG WEIJUN, TENG GUOQI
Принадлежит:

The invention discloses a terahertz detector parameter measuring device and measuring method which are used for measuring parameters of various terahertz detectors such as response degree. According to the terahertz detector parameter measuring device and measuring method, a method of intercomparison measurement between a standard terahertz detector with an absolute response degree and a terahertz detector to be tested is adopted. The method comprises the steps that terahertz radiation of a reference terahertz radiation source and background radiation of a liquid-nitrogen refrigerating black body are modulated to be periodical changed terahertz radiation signals by a light chopping slice, the periodical changed terahertz radiation signals are alternately sent to an optical system in a period and sent to the standard terahertz detector or the terahertz detector to be tested finally, and the periodical changed terahertz radiation signals are converted to periodical changed voltage signals ...

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Номер записи: 3
02-05-2023 дата публикации

Shape correcting device for thin-wall copper pipe large-diameter precise spiral winding piece

Номер: CN116037712A
Автор: GONG JINGZHU, YU DONGYU, DONG ZAITIAN, QIN YAN, WU LIPENG, LIU RUIXING, CAO FENG, LIU JIELUN, YANG KE, HAN JIANKUI
Принадлежит:

The invention discloses a shape correcting device for a thin-wall copper pipe large-diameter precise spiral winding piece. The shape correcting device comprises a base plate, a supporting column, a pressing ring, a first locking assembly and a second locking assembly. The multiple supporting columns are evenly arranged on the same circumference with the circle center of the base plate as the center at intervals, a to-be-corrected winding piece is placed in a containing space defined by the multiple cylinders and the base plate, a first locking assembly is arranged at the top of the to-be-corrected winding piece, and the first locking assembly clamps and presses the opposite supporting columns to the top of the to-be-corrected winding piece. A first locking assembly is arranged on the supporting column, a pressing ring is arranged above the first locking assembly, a second locking assembly is arranged on the top of the pressing ring, the second locking assembly clamps the opposite supporting ...

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Номер записи: 4