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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 7. Отображено 7.
11-04-2023 дата публикации

Method for evaluating precision of laser radar non-cooperative target relative pose measurement system

Номер: CN115951339A
Автор: WANG FENGXIANG, HUANG GENGHUA, SHU RONG, PEI HAODONG
Принадлежит:

The invention discloses a precision evaluation method for a laser radar non-cooperative target relative pose measurement system, and particularly relates to the technical field of space target relative navigation measurement. Comprising the following steps: S1, calibrating a relative relation between a laser radar and a high-precision ground three-dimensional laser scanner; s2, performing a target relative pose precision evaluation test; and S3, comparing the pose reference value with the laser radar pose measurement result, and counting and analyzing the precision and accuracy. According to the technical scheme, an evaluation scheme and technical support are provided for system design and development of a laser radar space non-cooperative target relative navigation measurement system.

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Номер записи: 1
18-08-2023 дата публикации

Multi-stage DSP embedded multi-core parallel space target three-dimensional vision measurement device and method

Номер: CN116608788A
Автор: SHU AN, PEI HAODONG, YU KUN, ZHOU SHANSHAN, LU JIAQI, DUAN HUIXIAN, HU LIANG
Принадлежит:

The invention discloses a multi-stage DSP embedded parallel visual data measuring device and method, and relates to the technical field of spaceflight measurement, and the technical scheme is characterized in that the multi-stage DSP embedded parallel visual data measuring device comprises a plurality of parallel first-stage DSPs and a second-stage DSP; the front ends of the plurality of first-stage DSPs are provided with visual camera heads connected with the first-stage DSPs, the rear end of the second-stage DSP is provided with an output interface module, and boards of the plurality of first-stage DSPs are communicated with boards of the second-stage DSP through SRIO high-speed interfaces. According to the device and the method, the real-time, rapid and autonomous perception and identification of a high-resolution image of a space target in a complex scene, the line efficiency of a three-dimensional vision measurement algorithm and the operational capability of an embedded system can ...

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Номер записи: 2
12-05-2023 дата публикации

Multi-means optical load combined space target three-dimensional vision measurement method

Номер: CN116105694A
Автор: PEI HAODONG, SHU AN, LIU YUNMENG, HUANG GENGHUA, ZHOU SHANSHAN, XIA HUI, DUAN HUIXIAN, YU KUN
Принадлежит:

The invention discloses a multi-means optical load composite space target three-dimensional vision measurement method, and relates to the technical field of spaceflight measurement. According to the technical scheme, the method is characterized by comprising the steps of S1, long-distance capture tracking measurement; s2, performing close-range three-dimensional vision measurement; s3, performing close-range three-dimensional reconstruction; and S4, ultra-close distance pose measurement and feature recognition. The method can be widely applied to intelligent control and measurement navigation technologies of targets such as space fault spacecrafts and space debris, and detection requirements and navigation tasks of different distance sections of space targets are met.

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Номер записи: 3
26-03-2014 дата публикации

Rapid high-precision pointing mirror servo control system

Номер: CN103684206A
Автор: TAN CHAN, PEI HAODONG, DING LEI, CHAI JINGUANG, WANG XUHUI, ZHANG BAOLONG, LIU YUNMENG, WANG XINPING, REN HONG
Принадлежит:

The invention discloses a rapid high-precision pointing mirror servo control system which is composed of a servo control unit and an angle sensor. The servo control unit is composed of a digital control board and an analog drive board of a pointing mirror, and the digital control board comprises a DSP (digital signal processor) and FPGA (field programmable gate array) control algorithm real-time processing platform, a CAN (control area network) controller, an RS485 interface chip and an A/D (analog to digital) sampling chip. The analog drive board comprises an optical coupler, a motor phase current amplification and filter circuit composed of an operational amplifier, and a drive circuit composed of an inverter and a three-phase bridge. The servo control system is high in control accuracy, good in real-time performance and fast in response, steady angle measuring accuracy can reach 2'', the pointing mirror can be controlled to scan in any designated areas in a large range and a small range ...

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Номер записи: 4
23-06-2023 дата публикации

Three-dimensional vision measurement system of dynamic binocular vision camera baseline

Номер: CN116295278A
Автор: SHU AN, PEI HAODONG, ZHOU SHANSHAN, YU KUN, DUAN HUIXIAN, LIU PAN, LU JIAQI, ZHOU YIFAN
Принадлежит:

The invention discloses a three-dimensional vision measurement system of a dynamic binocular vision camera baseline, which relates to the technical field of vision imaging, and is characterized by comprising three cameras and a Y-shaped bracket, the three cameras are respectively fixed at three tail ends of the Y-shaped bracket and are arranged in an equilateral triangle shape, and the Y-shaped bracket is fixed on the Y-shaped bracket. The optical axis of the lens of each camera is inclined by 18 degrees towards the center of the Y-shaped bracket; the length of a base line between the cameras is 1.3 m to 13m, and the distance from each tail end of the Y-shaped bracket to the center of the bracket is 0.75 m to 7.5 m; the binocular camera is placed in a convergent manner. The mutual constraint condition brought by the third camera is introduced, so that the feature points have unique geometric positions on each image, and the accuracy of image feature point matching is effectively improved ...

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Номер записи: 5
26-03-2014 дата публикации

Locking device of bidimensional scanning mechanism

Номер: CN103671372A
Автор: LIU YUNMENG, ZHANG BAOLONG, PEI HAODONG
Принадлежит:

The invention discloses a locking device of a spacial bidimensional scanning mechanism. The bidimensional scanning mechanism is applied to the technical field of aerospace engineering. The locking device comprises a base, a baffle block assembly, a pin puller, a rolling element connecting frame and a tension spring. The base is arranged on a foundation bed of the scanning mechanism, and the baffle block assembly, the pin puller and the tension spring are all mounted on the base. One end of the rolling element connecting frame is fixedly connected to the bidimensional mechanism rolling element, and the other end of the rolling element connecting frame is matched with a pin shaft. Baffle blocks are movable parts, and a rotating shaft is a baffle block shaft. When locking is carried out, the pin shaft of the pin puller penetrates through a base bush, a rolling element connecting frame bush and a pin shaft bush and locks the bidimensional mechanism rolling element mutually with the baffle block ...

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Номер записи: 6
27-06-2023 дата публикации

Low-resolution star map target identification method based on cyclic matching

Номер: CN116343056A
Автор: ZHANG XUGUANG, TAN CHAN, ZHANG E, PEI HAODONG
Принадлежит:

The invention relates to a low-resolution star map target identification method based on cyclic matching. The method comprises the following steps: generating a navigation feature star database by a star catalogue and an angular distance calculation formula; obtaining a sequence star map shot by the star sensor camera; calculating a three-dimensional vector of a star point in the image according to camera parameters; sorting the brightness of the star points, and circularly matching in a sliding window mode; detecting the number of successful matching times of each star point, and circularly confirming before and after; extracting a reliable fixed star and a suspicious target to carry out secondary matching to identify the target; a sequence image target enhancement algorithm enhances and tracks a target. According to the method, accurate identification of fixed stars under low camera resolution is realized, a cyclic matching result confirmation mechanism enables an algorithm missed alarm ...

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Номер записи: 7