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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 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 5. Отображено 5.
08-10-2008 дата публикации

Method for automatically generating frequency library of shortwave frequency hopping

Номер: CN0101282172A
Автор: YONGPING LI, HONGCHEN ZHU, XIAOJUN REN, RUPENG JIA, ZHIZHONG ZHOU, YANG SU, YAOWU GUAN, LI LIU, LI YONGPING, ZHU HONGCHEN, REN XIAOJUN, JIA RUPENG, ZHOU ZHIZHONG, SU YANG, GUAN YAOWU, LIU LI
Принадлежит:

A method for automatically generating a short-wave frequency-hopping frequency database belongs to a method for generating a frequency database. The aim of the invention is to settle the problems of inferior real-time property and inferior stability and reliability of the frequency in the frequency database according to the prior art. The method comprises the following steps: on-time actuating scanning and detecting by two sides in the node pair according to the system clock; scanning and transmitting by A from a prescribed starting frequency to a prescribed pause frequency with a prescribed frequency interval, wherein each frequency stays for n seconds; scanning and receiving by B from a prescribed starting frequency to a prescribed pause frequency with a same frequency interval, wherein each frequency stays for n seconds, evaluating the channel quality and ranking thereby to obtain the position of the frequency-passable window from A to B; obtaining the position of the frequency-passable ...

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Номер записи: 1
23-05-2012 дата публикации

Frequency self-adaption method for shortwave frequency-hopping communication system

Номер: CN0101304263B
Автор: QISHAN WU, YONGPING LI, RUPENG JIA, QIUXIA LUO, YANG SU, HUAIXIN HUANG, XIAOJUN REN, ZHIZHONG ZHOU, YAOWU GUAN, LI LIU, WU QISHAN, LI YONGPING, JIA RUPENG, LUO QIUXIA, SU YANG, HUANG HUAIXIN, REN XIAOJUN, ZHOU ZHIZHONG, GUAN YAOWU, LIU LI
Принадлежит:

The invention discloses a frequency self-adaptive method used in a short-wave frequency hopping communication system, relating to a frequency selection method of hopping communication and aiming at solving the problem that the communication is affected owing to the working frequencies do not meet the communication quality requirement when the working frequencies meet bad frequency during channel variations. The method includes the following steps: setting a preset frequency hopping frequency database with N frequencies, numbering each frequency and selecting M better frequencies as the initial frequency hopping working frequency groups; during the communication process, both communication sides real-time monitor the communication quality of each working frequency, and store the working frequency into an abandoned frequency database when the working frequency does not meet the communication quality requirement and select a new frequency in the frequencies which are not used nor abandoned ...

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Номер записи: 2
12-11-2008 дата публикации

Frequency self-adaption method for shortwave frequency-hopping communication system

Номер: CN0101304263A
Автор: YONGPING LI, XIAOJUN REN, ZHIZHONG ZHOU, YANG SU, HUAIXIN HUANG, QIUXIA LUO, RUPENG JIA, YAOWU GUAN, LI LIU, QISHAN WU, LI YONGPING, REN XIAOJUN, ZHOU ZHIZHONG, SU YANG, HUANG HUAIXIN, LUO QIUXIA, JIA RUPENG, GUAN YAOWU, LIU LI, WU QISHAN
Принадлежит:

The invention discloses a frequency self-adaptive method used in a short-wave frequency hopping communication system, relating to a frequency selection method of hopping communication and aiming at solving the problem that the communication is affected owing to the working frequencies do not meet the communication quality requirement when the working frequencies meet bad frequency during channel variations. The method includes the following steps: setting a preset frequency hopping frequency database with N frequencies, numbering each frequency and selecting M better frequencies as the initial frequency hopping working frequency groups; during the communication process, both communication sides real-time monitor the communication quality of each working frequency, and store the working frequency into an abandoned frequency database when the working frequency does not meet the communication quality requirement and select a new frequency in the frequencies which are not used nor abandoned ...

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Номер записи: 3
08-10-2008 дата публикации

Double-channel transmitting-receiving method for shortwave synchronous frequency-hopping communication

Номер: CN0101282171A
Автор: XIAOJUN REN, YONGPING LI, ZHIZHONG ZHOU, YANG SU, HUAIXIN HUANG, QIUXIA LUO, RUPENG JIA, YAOWU GUAN, LI LIU, QISHAN WU, REN XIAOJUN, LI YONGPING, ZHOU ZHIZHONG, SU YANG, HUANG HUAIXIN, LUO QIUXIA, JIA RUPENG, GUAN YAOWU, LIU LI, WU QISHAN
Принадлежит:

A double channel transmitting/receiving method which is used for the short-wave synchronization frequency hopping communication belongs to the technical field of short-wave communication and relates to a method for transmitting and receiving a short-wave synchronization frequency hopping communication. The purpose of the invention is to settle the problem that a timing system with an extraordinary high precision is required in the existing short-wave synchronization frequency hopping communication. The transmitting side adopts a single transmitter. The receiving side adopts a double receiver comprising a first receiver and a second receiver. The first receiver works in the odd time slot for transmitting the frequency-hopping time slot sequence. The second receiver works in the even time slot for transmitting the frequency-hopping time slot sequence. The working time of each receiver in a frequency is two times of the transmitting time of the transmitter. The method according to the invention ...

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Номер записи: 4
23-11-2011 дата публикации

Method for automatically generating frequency library of shortwave frequency hopping

Номер: CN0101282172B
Автор: LI LIU, ZHIZHONG ZHOU, YAOWU GUAN, XIAOJUN REN, RUPENG JIA, YONGPING LI, HONGCHEN ZHU, YANG SU, LIU LI, ZHOU ZHIZHONG, GUAN YAOWU, REN XIAOJUN, JIA RUPENG, LI YONGPING, ZHU HONGCHEN, SU YANG
Принадлежит:

A method for automatically generating a short-wave frequency-hopping frequency database belongs to a method for generating a frequency database. The aim of the invention is to settle the problems of inferior real-time property and inferior stability and reliability of the frequency in the frequency database according to the prior art. The method comprises the following steps: on-time actuating scanning and detecting by two sides in the node pair according to the system clock; scanning and transmitting by A from a prescribed starting frequency to a prescribed pause frequency with a prescribed frequency interval, wherein each frequency stays for n seconds; scanning and receiving by B from a prescribed starting frequency to a prescribed pause frequency with a same frequency interval, whereineach frequency stays for n seconds, evaluating the channel quality and ranking thereby to obtain the position of the frequency-passable window from A to B; obtaining the position of the frequency-passable ...

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Номер записи: 5