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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 2. Отображено 2.
04-04-2023 дата публикации

Data compression method for Internet of Vehicles

Номер: CN115914640A
Автор: WANG MENGLING, WANG XIAOLAN, LIAN JIANCHENG, ZHAO CHANGYIN, WANG MEI, REN YUELANG
Принадлежит:

The invention relates to the field of data compression and storage, in particular to a data compression method for the Internet of Vehicles, which comprises the following steps: calculating the average coding length of image blocks of different sizes corresponding to each pixel point, and recording the image block corresponding to the minimum average coding length as a preferred block of the pixel point; obtaining a level serial number and a sequence serial number of the preferable block, and calculating the certainty degree of the preferable block; obtaining all determined blocks according to the level serial numbers and the sequence serial numbers of the preferred blocks and the determinacy; all corner pixel points of all the determined blocks are obtained, and all position sequences are obtained according to the sequence degree of the corner pixel points and the relative relation between the corner pixel points; obtaining all coding sequences according to the gray values of all the determined ...

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Номер записи: 1
10-09-2008 дата публикации

Method and device for enhancing borehole accuracy

Номер: CN0101260782A
Автор: WANG HONGBIN, LIAN JIANCHENG, GE WEI, HONGBIN WANG, JIANCHENG LIAN, WEI GE
Принадлежит:

The invention relates to a method and a device for improving the drilling accuracy. The device comprises a drill tower and a drill pipe, wherein, one end of the drill pipe is provided with an aiguille, the other end of the drill pipe passes through a base of the drill tower and is connected with the upper part of the drill tower, and the middle part of the drill pipe is fixed with a transverse rod which is provided with a hole. When the drilling operation is performed, a rope is passed through the hole, one end of the rope is connected to the base of the drill tower, the other end is connected to the upper part of the drill tower, and the rope is strained and parallel with the drill pipe. The method and the device can limit the horizontal jitter of the drill pipe and improve the drilling accuracy.

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Номер записи: 2