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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 7. Отображено 7.
23-06-2023 дата публикации

Network coding transmission method based on deep learning and channel prediction

Номер: CN116319183A
Автор: GAO JINGLIANG, ZHANG SHA, GUO WANGMEI, LI ZAN, YU HENGSU, ZHANG WENYUE, QI PEIHAN, HAO BENJIAN, WANG CHAO
Принадлежит:

The invention discloses a network coding transmission method based on deep learning and channel prediction, and mainly solves the problem of low transmission efficiency under a non-stationary channel in the prior art. According to the implementation scheme, channels are divided according to the size of fixed blocks, and the packet loss rate of each group is counted and serves as an original data set; an original data set is divided into a sample set in a mode of combining a sliding window and slicing, and then the sample set is divided into a training set and a test set according to a set proportion; selecting a single-layer long-short-term memory network as a test neural network and training the test neural network by using the training set; the samples in the test set are sent to the trained test neural network, and the predicted value of the packet loss rate of each sample in the test set is obtained; and carrying out network coding transmission according to the predicted packet loss ...

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Номер записи: 1
27-06-2023 дата публикации

Ionized layer foF2 space reconstruction method based on self-attention mechanism

Номер: CN116340762A
Автор: GAO JINGLIANG, YU HENGSU, LI ZAN, QI PEIHAN, HAO BENJIAN, ZHANG SHA, BI DEXIN, WEI TAO
Принадлежит:

The invention provides an ionosphere foF2 space reconstruction method based on a self-attention mechanism. The method comprises the following steps: obtaining a training sample set and a test sample set; constructing a prediction network model based on a self-attention mechanism; performing iterative training on the prediction network model based on the self-attention mechanism; and obtaining a spatial reconstruction result of the ionized layer foF2. According to the method, the contribution degree of different features and the similarity and dependency between the features are analyzed through the self-attention module, so that the model can extract richer feature information, the defects of information loss and insufficient spatio-temporal correlation mining degree of foF2 values in the prior art are overcome, the spatial reconstruction precision of the ionosphere foF2 is improved, and the method is suitable for large-scale popularization and application. Therefore, the working performance ...

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Номер записи: 2
02-06-2023 дата публикации

PDW homologous matching method based on self-attention mechanism

Номер: CN116203508A
Автор: LI ZAN, ZHANG JIAWEN, HAO BENJIAN, GAO JINGLIANG, CHEN XIAOJUN, ZHAO YUE, ZHAO MAN, WANG RUIYI, LI RUOYAO, LI SIWEN
Принадлежит:

The invention discloses a PDW homologous matching method based on a self-attention mechanism. The method comprises the following steps of: 1, constructing a data set, and dividing the data set into the following three parts according to the division of a matching scene: synchronous cross-system data, asynchronous cross-system data and asynchronous same-system data; 2, data preprocessing: preprocessing the data in the step 1 before entering an algorithm; step 3, type judgment: respectively carrying out type judgment on matching parameters of carrier frequency RF, pulse width PW and pulse PRI of the data; the data types comprise non-agility, periodic agility and non-periodic agility; and 4, constructing a self-attention mechanism network, and judging whether the two groups of RF or PW or PRI are both periodic agility or non-periodic agility and are homologous or not. According to the method, the asynchronous radar PDW string can be subjected to homologous matching, and the positioning parameters ...

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Номер записи: 3
14-07-2023 дата публикации

Frequency hopping detection result complementing method based on distributed multi-station monitoring equipment

Номер: CN116436491A
Автор: LI ZAN, WANG RUIYI, HAO BENJIAN, GAO JINGLIANG, CHEN XIAOJUN, ZHAO YUE, WANG XINLEI, ZHANG JIAWEN, LI SIWEN, LI RUOYAO
Принадлежит:

The invention relates to a frequency hopping detection result complementing method based on distributed multi-station monitoring equipment, which comprises the following steps of: respectively receiving multi-frequency hopping signals by adopting a plurality of receiving stations, detecting the multi-frequency hopping signals received by each receiving station, and separating and extracting to obtain each hop of signal; and according to each hop of the obtained signal of each receiving station, performing multi-station cooperative frequency hopping pattern completion operation, and finally obtaining a frequency hopping pattern detection result of each receiving station. The multi-station cooperative frequency hopping pattern completion operation comprises missing detection completion and/or wrong detection correction; according to the invention, a plurality of receiving stations arranged in a distributed manner are adopted to receive multi-frequency-hopping signals, frequency-hopping patterns ...

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Номер записи: 4
28-07-2023 дата публикации

Method, system and equipment for identifying disturbed state of PSK (Phase Shift Keying) digital modulation communication signal and medium

Номер: CN116506043A
Автор: HAO BENJIAN, LI RUOYAO, LI ZAN, GAO JINGLIANG, CHEN XIAOJUN, RONG FEI, ZHAO YUE, HU YUANHANG, ZHANG JIAWEN, WANG RUIYI
Принадлежит:

A PSK digital modulation communication signal disturbed state identification method, system, device and medium, and the method comprises the steps: firstly analyzing characteristic parameters of different modulation types of signals, including spectrum symmetry, spectrum discrete peak number, time domain amplitude entropy, power spectrum entropy and high-order cumulant ratio, and analyzing the characteristic parameters of the spectrum symmetry, the spectrum discrete peak number, the time domain amplitude entropy, the power spectrum entropy and the high-order cumulant ratio; obtaining characteristic parameters used for disturbed state identification; secondly, according to the characteristic parameters of spectrum symmetry, the number of spectrum discrete peaks, the time domain amplitude entropy, the power spectrum entropy and the high-order cumulant ratio, determining a stable range when the PSK characteristic parameters are free of interference, and judging whether the signal is disturbed ...

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Номер записи: 5
23-03-2018 дата публикации

Glass back plate cell -phone protective housing

Номер: CN0207135155U
Автор: GAO JINGLIANG
Принадлежит: DONGGUAN SITENG ELECTRONICS CO LTD, DONGGUAN SITENG ELECTRONICS CO., LTD.

The utility model provides a glass back plate cell -phone protective housing, glass back plate is with gluey, glass back plate's fixed glass back plate is all around caught to gluey cover, the size ofgluing the piece corresponds with the cell -phone surface of installing, glass back plate adopts rigidity organic glass to make, glass back plate is last to have the camera hole, it makes through rubber coating technology with cup jointing of glass back plate to glue the piece, glue the piece including being located lateral wall all around, a plurality of trompils have on the lateral wall, be located side and bottom surface respectively, in order to expose button and all kinds of jack on the cell -phone, glass back plate's size slightly is less than the size at the back of cell -phone. The utility model discloses soft plastic and high strength glass back plate combine with rubber coating technology, and the structure is more stable, glass chemical stability is good, can not turn to be yellow ...

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Номер записи: 6
14-10-2015 дата публикации

Roller bearing with anti -roll post bearing holder that drops

Номер: CN0204704266U
Автор: WU LINQIANG, SHEN KE, CHEN LI, XU QIANG, FANG YUAN, TANG LIANG, GAO JINGLIANG, GUO MING, WANG KEJING
Принадлежит:

The utility model relates to a roller bearing with anti -roll post bearing holder that drops, include outer lane, inner circle, keep the ware body and roller, keep the ware body to set up between outer lane and inner circle, keep being provided with on the ware body roller notch of a plurality of circumference equipartitions, be equipped with a roller in every roller notch, its characterized in that: every roller notch in the S spring still is equipped with, the S spring withstands the roller, and the roller keeps in contact with inner circle, outer lane. The utility model discloses simple structure is reliable, and fundamentally has stopped roller obscission among the assembling process, has saved the later process of mending the dress to the roller that drops, has improved the machining efficiency of product, has guaranteed product quality, has reduced manufacturing cost.

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Номер записи: 7