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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 6. Отображено 6.
04-04-2023 дата публикации

High-dynamic SAR image angle inverse identification method

Номер: CN115909055A
Автор: WANG SHUWEN, LI SHUANGSHUANG, XIAO JINGUO, SONG BOTAO, WEI HENG, WU ZHENKAI, SUN WENYUAN, JIANG JIE
Принадлежит:

The invention relates to a high-dynamic SAR image angle inverse identification method, which comprises the following steps of: performing parallel operation by using a multi-core DSP (Digital Signal Processor), converting high-dynamic M-bit image data to be processed into M/2-bit image data through power transformation, performing maximum value searching operation on the M/2-bit image data after the power transformation, performing target pixel position merging on the pixel maximum value, and finally performing angle inverse identification on the high-dynamic SAR image. And carrying out ROI slice segmentation on the maximum value of the merged pixels, carrying out ROI processing on the segmented ROI slices to generate an ROI binary image, and calculating the area value of a connected region in the ROI binary image so as to distinguish the target and the angular inversion. According to the method, the high-value target and the angle reflex in the high-dynamic scene can be quickly screened ...

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Номер записи: 1
06-06-2023 дата публикации

Magnetic pressure sensing ear hanging type earphone

Номер: CN116233677A
Автор: XIAO JINGUO, TIAN JIFENG, LIU NIANQIONG
Принадлежит:

The invention provides a magnetic pressure-sensitive ear-hook type earphone, which comprises a hanger, an earphone body, a first magnetic piece and a second magnetic piece, and is characterized in that the hanger is provided with an open slot; the earphone body is rotationally connected to the hanger; the first magnetic piece is fixed on the hanging lug; the second magnetic part is fixed on the earphone body and is opposite to the first magnetic part at an interval; wherein the earphone body is located at an initial position when located in the open slot, and the magnetic fields of the first magnetic piece and the second magnetic piece interact to generate restoring force for driving the earphone body to rotate towards the initial position. In the process of wearing the earphone, the earphone body is tightly clamped on the tragus of the ear under the interaction of the magnetic fields of the first magnetic part and the second magnetic part, so that a second fixing point is generated, the ...

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Номер записи: 2
25-06-2014 дата публикации

Simple scattering point cone target parameter estimation method based on time-frequency imaging

Номер: CN103885051A
Автор: DU LAN, XIAO JINGUO, SONG YANG, BAI XUERU, LIU HONGWEI, WANG PENGHUI
Принадлежит:

The invention belongs to the technical field of signal processing, relates to the technology of radar imaging and discloses a simple scattering point cone target parameter estimation method based on time-frequency imaging. The method includes the steps that instantaneous RD images of a cone target are obtained by carrying out time-frequency analysis on a distance pulse pressure echo in the orientation dimension, the gravity centers of the instantaneous RD images are horizontally moved for alignment so as to overcome inaccuracy of previous motion compensation, the echo period is estimated by calculating the correlation coefficient of the instantaneous RD images after the gravity centers are horizontally moved for alignment, cone symmetry parameters are estimated according to echo time-frequency distribution, rotation frequency of a cone is estimated according to the echo period and the cone symmetry parameters, and the height of the cone and the radius of the bottom face of the cone are ...

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Номер записи: 3
27-08-2014 дата публикации

Precession target micro-Doppler extracting method based on instant frequency modulation rate estimation

Номер: CN104007430A
Автор: DU LAN, CAO WENJIE, ZHANG LEI, XIAO JINGUO, LIU HONGWEI
Принадлежит:

The invention discloses a precession target micro-Doppler extracting method based on instant frequency modulation rate estimation. The precession target micro-Doppler extracting method based on instant frequency modulation rate estimation comprises the steps that (1) an equivalent scattering point model of a spatial precession conical target is established, echo signals of the conical target are received by a radar, echo sequences are obtained from the echo signals by using the equivalent scattering point model; (2) frequency modulation rates of the echo sequences are estimated with a relaxation demodulation line frequency modulation method; (3) the frequency modulation rates of the echo sequences are processed through a random sampling consistency algorithm, and P frequency modulation rate curves are obtained; (4) integral operation is carried out on the P frequency modulation rate curves respectively, and P instant micro-Doppler frequency estimation curves are obtained. According to the ...

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Номер записи: 4
16-05-2023 дата публикации

Intermediate frequency injection type SAR real-time imaging test method and system

Номер: CN116125470A
Автор: XIAO JINGUO, SUN WENYUAN, WEI HENG, WU ZHENKAI, WANG SHUWEN, ZHAO XUEZHOU, WU JUNQIANG, JIANG JIE
Принадлежит:

The invention discloses an intermediate frequency injection type SAR real-time imaging test method and system, and the method comprises the steps: generating an echo data file according to the actual measurement motion track of a platform and the characteristics of a target scattering point; downloading the echo data file to an intermediate frequency signal playing unit through an external control computer, and externally accessing a pulse synchronization signal and a frame trigger signal of the tested SAR imaging equipment to a corresponding interface of the intermediate frequency signal playing unit; after receiving the frame triggering signal, the intermediate frequency signal playing unit plays an echo signal according to the pulse synchronizing signal, and the echo signal is injected into the tested SAR imaging equipment; the tested SAR imaging equipment outputs an SAR imaging result through the optical fiber port, the SAR imaging result is accessed to the light injection part, the ...

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Номер записи: 5
13-04-2021 дата публикации

Metal hose machining equipment

Номер: CN212946330U
Автор: XIAO JINGUO, CHEN JUAN, 肖金国, 陈娟
Принадлежит: JIANGSU JINYU PIPE IND CO LTD, JIANGSU JINYU PIPE INDUSTRY CO., LTD., 江苏金予管业有限公司

The utility model discloses metal hose machining equipment which comprises a body, a first air cylinder is fixedly connected to the inner side wall of the body, a first telescopic rod is fixedly connected to the right side of the first air cylinder, and a first rotating motor is fixedly connected to the right side of the first telescopic rod. A sleeve rod is arranged at the output end of the first rotating motor through the right side of the first rotating rod, a second rotating motor is fixedly connected to the inner bottom of the body, a second rotating rod is movably connected to the output end of the second rotating motor, and a limiting block is fixedly connected to the top of the second rotating rod; a limiting groove is formed in the limiting block, a second air cylinder is fixedly connected to the inner top of the body, a welding machine is fixedly connected to the bottom of the second air cylinder through a second telescopic rod, and a welding head is arranged at the bottom of ...

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Номер записи: 6