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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 10. Отображено 10.
30-06-2023 дата публикации

6G-IoT coherent feature GAT fusion suppression superposition CSI feedback method

Номер: CN116366114A
Автор: QING CHAOJIN, WANG ZILONG, LIU WENHUI, YE QING, CHEN JINLIANG
Принадлежит:

The invention discloses a 6G-IoT coherent feature GAT fusion suppression superposition CSI feedback method, which comprises the following steps that: a user side extracts downlink CSI coherent features and feeds back downlink CSI to a base station side by adopting a spread spectrum superposition CSI feedback mode; the base station end carries out equalization processing on the received signal to obtain a superposition sequence initial feature; and according to the superposition sequence initial features, constructing a multi-task superposition interference suppression network based on GAT and a fusion interference suppression mechanism, and obtaining feedback downlink CSI reconstruction features and uplink user data sequence detection features. Compared with non-superposed CSI feedback, the method has the advantages that the energy consumption of the user side and the data transmission resource of the 6G-IoT system are saved; compared with superposed CSI feedback, according to development ...

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Номер записи: 1
24-12-2014 дата публикации

Method for precisely estimating CFO (carrier frequency offset) under compressive sampling

Номер: CN104243134A
Автор: QING CHAOJIN, ZHANG MINTAO, PENG HONG, DONG XIUCHENG, WEI JINCHENG
Принадлежит:

The invention discloses a method for precisely estimating a CFO (carrier frequency offset) based on compressive sensing technology. The method includes: a, compressing a sampling signal; b, reconstructing a rough estimation measurement of the CFO; c, finding a maximum amplitude value of the rough estimation measurement of the CFO; d, constructing a precise estimation measurement of the CFO; 3, searching for a precise estimation value of the CFO. The method according to the scheme has the advantages that compressive sampling based on CFO estimation can be achieved, sampling rate required by CFO estimation is lowered, and the requirement of CFO estimation on sampling devices is lowered; meanwhile, the CFO under compressive sampling can be precisely estimated by the method, and precision of CFO estimation based on compressive sensing is effectively improved.

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Номер записи: 2
30-09-2015 дата публикации

Mobilizable solar energy tracker

Номер: CN0204679868U
Автор: YANG XIAOMING, LI TIANQIAN, QING CHAOJIN, QIU XIQIANG
Принадлежит:

The utility model discloses a mobilizable solar energy tracker, but including obs core control circuit board, step motor, power detection device and level, the miniature solar cell panel of every single move pivoted, step motor is connected to obs core control circuit board, and step motor connects miniature solar cell panel, and miniature solar cell panel connects the power detection device, and obs core control circuit board is connected to the power detection device. Compared with the prior art, the utility model the advantage be: 1 the utility model discloses the solar energy power supply system who can be used to vehicle, steamer, space station, satellite etc. Uses, also can be used to the solar energy power supply system that fixes, can improve solar energy conversion efficiency greatly. 2, need not use GPS module, light sensor, azimuth angle sensor etc. Simplify the tracking system structure, reduce the realization cost yet. 3, whether the level does not influence the work of solar ...

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Номер записи: 3
04-02-2015 дата публикации

Reconstruction method of timing offset estimation measure

Номер: CN104333430A
Автор: QING CHAOJIN, LU JINJUN, LUO YUPING, DONG XIUCHENG, SUN LIANG, ZHANG MINTAO
Принадлежит:

The invention discloses a reconstruction method of a timing offset estimation measure under compressed sampling. The reconstruction method comprises (a) optimizing a measurement matrix of compressed sampling according to the blocking characteristic of the timing offset estimation measure, (b) performing compressed sampling by use of the optimized measurement matrix, (c) reconstructing the timing offset estimation measure according to the compressed sampling in combination with the blocking characteristic of the timing offset estimation measure, and (d) estimating the timing offset by use of the reconstructed timing offset estimation measure. According to the reconstruction method of the timing offset estimation measure under compressed sampling, the reconstruction accuracy of the timing offset estimation measure under the compressed sampling can be effectively improved, and then the estimation accuracy of timing offset estimation under the compressed sampling can be improved.

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Номер записи: 4
24-12-2014 дата публикации

SOI-LDMOS (silicon-on-insulator laterally diffused metal oxide semiconductor) high-tension power device with triangular trench

Номер: CN104241388A
Автор: YANG XIAOMING, LI TIANQIAN, QING CHAOJIN, CAI YU
Принадлежит:

The invention discloses an SOI-LDMOS (silicon-on-insulator laterally diffused metal oxide semiconductor) high-tension power device with a triangular trench and aims to solve the problems that voltage of a drain of the prior SOI-LDMOS device is induced out of an electronic inversion layer from beneath a buried oxide layer, an equipotential line is prevented from penetrating the buried oxide layer, and early breakdown occurs to a silicon layer, and breakdown voltage withstanding is difficult to increase. The SOI-LDMOS high-tension power device is mainly characterized in that the triangular trench is etched in a buried oxide layer under a drift area; a buried oxide slope exists under the drift area and is capable of constraining positively charged holes, high-density positive charge is produced, and breakdown voltage withstanding of the device is greatly increased through the high-density positive charge; thickness of the drift area linearly increases from a source to a drain, according to ...

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Номер записи: 5
09-09-2015 дата публикации

Mobile solar tracker

Номер: CN104898710A
Автор: YANG XIAOMING, LI TIANQIAN, QING CHAOJIN, QIU XIQIANG
Принадлежит:

The invention discloses a mobile solar tracker, comprising a core control circuit board, a stepping motor, a power detection apparatus and a miniature solar panel capable of rotating horizontally or obliquely. The core control circuit board is in connection with the stepping motor; the stepping motor is in connection with the miniature solar panel; the miniature solar panel is in connection with the power detection apparatus; the power detection apparatus is in connection with the core control circuit board. Compared with the prior art, the mobile solar tracker can be applied to a solar power system of vehicles, steamships, space stations, satellites, etc., and can also be used for a fixed solar power system, thereby substantially improving solar energy conversion efficiency. Components such as a GPS module, a light sensor, and an azimuth sensor are not required, thereby simplifying a tracking system and reducing implementation costs. In addition, whether a solar cell base is horizontal ...

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Номер записи: 6
23-09-2015 дата публикации

Raise dust control information acquisition and transmission hardware circuit based on compressed sensing

Номер: CN0204669533U
Автор: QING CHAOJIN, QIN CHAO, ZHENG TIANHANG, ZHANG MINTAO
Принадлежит:

The utility model discloses a raise dust control information acquisition and transmission hardware circuit based on compressed sensing mainly relates to the acquisition and transmission circuit that video acquisition and air contaminant monitored, include sampling module circuit, processor circuit, power supply circuit and network interface circuit based on the compressed sensing technique to and video and pollutant sensor coupling part, compressed sensing sampling circuit include analog multiplier (MPY634) circuit, digital analog conversion (DAC0832) circuit, integrator (RC total mark filter network) circuit, rectifier circuit, processor circuit include singlechip (STM32F107VCT6) circuit, the network interface circuit include ethernet chip (ENC28J60SS) and interface (RJ45) circuit. The utility model discloses set up the compressed sensing board for actual data collection information quantity is unchangeable, and the data volume is minimum. Storage space occupies for a short time, further ...

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Номер записи: 7
19-02-2014 дата публикации

Maximum likelihood carrier frequency deviation estimation method of compression reconstruction

Номер: CN103595668A
Автор: QING CHAOJIN, ZHANG MINTAO, PENG HONG, DONG XIUCHENG, WANG JUN, WEI JINCHENG
Принадлежит:

The invention discloses a maximum likelihood carrier frequency deviation estimation method of compression reconstruction. The maximum likelihood carrier frequency deviation estimation method is used for carrier frequency synchronization of communication systems. The method includes the steps of forming an N*1 receipt signal sequence x according to a received training sequence of a transmitting end, reading a sensing matrix from a specific storage position, obtaining a compression domain measurement set y according to the received signal sequence x and the compression ML frequency deviation estimation measurement of the sensing matrix, reconstructing an ML frequency deviation estimation measurement set y1 through the compression domain measurement set y, and conducting mapping to obtain an ML frequency deviation estimation value according to the maximum value position index of the ML frequency deviation estimation measurement set y1. The method solves the problems that a high-precision maximum ...

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Номер записи: 8
26-03-2014 дата публикации

Compressed domain frequency shift estimation method

Номер: CN103685124A
Автор: QING CHAOJIN, DONG XIUCHENG, WEI JINCHENG, ZHANG MINTAO, XIA LING, YANG XIAOMING
Принадлежит:

The invention discloses a compressed domain frequency shift estimation method used for carrier frequency synchronization of all distinguishable path signals of a wireless communication system. The method includes the steps that a perception matrix Theta is constructed, and a received signal sequence x on a distinguishable path is extracted; frequency shift estimation of a compressed domain is preprocessed through the perception matrix Theta and the received signal sequence x on the distinguishable path, a preprocessing estimation value is obtained, a frequency shift estimation value of the distinguishable path signals in a non-compressed domain is mapped according to the preprocessing estimation value, and carrier frequency shift estimation is completed in the wireless system frequency synchronization process. Resources of a processor can be greatly saved with the method.

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Номер записи: 9
15-09-2010 дата публикации

Synergic timing capture method of distributed antenna

Номер: CN0101834647A
Автор: CHAOJIN QING, SHIHAI SHAO, YOUXI TANG, QING CHAOJIN, SHAO SHIHAI, TANG YOUXI
Принадлежит:

The invention discloses a synergic timing capture method of a distributed antenna. A distributed antenna system is established in a wireless communication system. The synergic timing capture method is characterized in that the maximum possible delay inequality of a specific transmitter signal reaching each distributed receiving antenna by using the coverage area of each distributed antenna participating in the synergic timing capture can be calculated and is used as search range limit for the synergic timing capture processing; and the search processing of the synergic timing capture under the search range limit condition can be carried out to improve the accurate capture possibility of timing capture of each distributed antenna.

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Номер записи: 10