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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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Применить Всего найдено 3. Отображено 3.
06-03-2001 дата публикации

DIGITAL CORRELATION DEVICE AND CORRELATION METHOD FOR TELEMETRIC SYSTEMS

Номер: CA0002317356A1
Автор: BETTAIEB, KHALED, BETTAIEB KHALED
Принадлежит:

A correlation method and a digital correlation device allowing detection of the occurrence of a coded reference sequence including N code elements or chips in a sampled reception signal are described. The reception signal is sampled at a frequency equal to d times the chip rate of the reference sequence, and d x Nd correlation values are generated for d x Nd successive delays of the recepti on signal, Nd being a lower number than the number N of chips. Each correlation value, for a given delay of the reception signal, is obtained, according to the present invention, at the end of a plurality of correlation operations during which partial correlation values covering code portions including Nd successive chips of the reference sequen ce are generated.

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Номер записи: 1
18-05-2018 дата публикации

SAFE NETWORK INTERFACE

Номер: CA0002980710A1
Автор: RICCO, PHILIPPE, MATHYS, YVES, BETTAIEB, KHALED, RICCO PHILIPPE, MATHYS YVES, BETTAIEB KHALED
Принадлежит:

Deterministic network interface (100) for an avionic network, configured for two Ethernet physical media (120, 220), with two neighbouring network interfaces (99, 101). The network interface of the invention allows the realization of ring-topology network without collision in the physical Ethernet media. The communication between nodes is carried out in a fully deterministic fashion by an unconnected (UDP) protocol. The interface of the invention incorporates a hardware end-to-end integrity mechanism that ensures message integrity from the memory of the sender host to that of the recipient one.

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Номер записи: 2
06-07-2004 дата публикации

Digital correlation device and correlation method for telemetric systems

Номер: US0006760363B1
Автор: Khaled Bettaieb, BETTAIEB KHALED
Принадлежит: CSEM Centre Suisse d′Electronique et de Microtechnique SA, SUISSE ELECTRONIQUE MICROTECH, CSEM CENTRE SUISSE D'ELECTRONIQUE ET DE MICROTECHNIQUE SA

A correlation method and a digital correlation device allowing detection of the occurrence of a coded reference sequence including N code elements or chips in a sampled reception signal are described. The reception signal is sampled at a frequency equal to d times the chip rate of the reference sequence, and dxNd correlation values are generated for dxNd successive delays of the reception signal, Nd being a lower number than the number N of chips. Each correlation value, for a given delay of the reception signal, is obtained, according to the present invention, at the end of a plurality of correlation operations during which partial correlation values covering code portions including Nd successive chips of the reference sequence are generated.

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Номер записи: 3