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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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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 2. Отображено 2.
02-05-2023 дата публикации

Signal noise reduction method and device

Номер: CN116049633A
Автор: ZHANG ERQING, JIANG DANGNIAN, LIU JIANRONG
Принадлежит:

The invention relates to the field of signal processing, in particular to a signal noise reduction method, which comprises the following steps: acquiring a first sub-band of a useful signal in a signal and a second sub-band of a background noise signal in the signal; obtaining the similarity of the first sub-band and the second sub-band in the corresponding frequency interval; and rejecting the third sub-bands of the first N bits in the order of similarity from high to low to realize noise reduction of the signal. The method has the advantages that noise removal is completed to the maximum extent for acoustic emission signals under different working conditions and different friction states, the signal-to-noise ratio of friction acoustic emission signals is effectively increased, especially the signal-to-noise ratio of weak friction signals, and the precision and sensitivity of friction acoustic emission detection of the sealing end face are greatly improved.

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Номер записи: 1
30-05-2023 дата публикации

Small-flow high-precision infrared leakage monitor

Номер: CN116183544A
Автор: ZHANG ERQING, CHEN PING, JIANG DANGNIAN
Принадлежит:

The invention relates to a small-flow high-precision infrared leakage monitor which comprises a monitoring cylinder, an infrared detection piece is arranged on the inner wall of the monitoring cylinder, a plurality of reflection angles are arranged on the inner wall of the monitoring cylinder and distributed in the circumferential direction of the monitoring cylinder, each reflection angle comprises a first reflection face, and a second reflection face is arranged on the inner wall of the monitoring cylinder and distributed in the circumferential direction of the monitoring cylinder. The plurality of first reflecting surfaces are used for reflecting infrared radiation to the position where the infrared detection piece is located when the liquid drops move to the position where the infrared detection piece is located; the method has the advantage that accurate monitoring is achieved when the leakage amount is small.

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Номер записи: 2