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22 results on '"朱瑞飞"'

5. Design of long focal infrared catadioptric optical system for multi-guided system

Author

韩景壮 Han Jing-Zhuang, 张天翼 Zhang Tian-yi, 贾宏光 Jia Hong-guang, 虞林瑶 Yu Lin-yao, 朱瑞飞 Zhu Ruifei, 宋宝奇 Song Bao-qi, 王超 Wang Chao, and 魏群 Wei Qun

Subjects
Physics, Catadioptric system, Optics, business.industry, Infrared, business, Atomic and Molecular Physics, and Optics
Published
2015

6. Optimization of angle increments in tracking loop for roll-pitch seekers

Author

虞林瑶 Yu Lin-yao, 王超 Wang Chao, 魏群 Wei Qun, 张天翼 Zhang Tian-yi, 姜湖海 Jiang Hu-hai, 贾宏光 Jia Hong-guang, 吴海龙 Wu Hai-long, and 朱瑞飞 Zhu Ruifei

Subjects
Engineering, Basis (linear algebra), Angular displacement, business.industry, Tracking loop, Gimbal, Image plane, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Tracking error, Position (vector), Control theory, Focal length, business
Abstract

A method to generate and optimize angle increments was put forward to extract the tracking loop instruction of a roll-pitch seeker. Firstly, one kind of the roll-pitch seeker was introduced, and its mechanical construction and operation principle were given. Then, the angle increments of roll gimbals and pitch gimbals were calculated based on the target deviation on the image plane and the optical focal length. Both roll gimbal instruction and pitch gimbal instruction were calibrated to be absolute angular position instructions from the zero position respectively. The absolute angular position instruction for the pitch gimbals was calibrated to be from zero to /2, while that for the roll gimbals was calibrated to be from zero to 2. According to the principle of minimizing the angle increment of roll gimbals as small as possible, four different optimized control strategies were designed. On the basis of mentioned strategies, the feedback roll gimbal angle was separated into four quadrants. Finally, a simulation and a test were implemented to check the validity of the presented algorithm. Results show that the submitted generation and optimization of angle increments for roll-pitch seekers perform effectively and the tracking error is less than 0.15.

Published
2014

7. 哨兵一号协同吉林一号影像的树种识别研究.

Author

王长青, 李贝贝, 朱瑞飞, and 常守志

Subjects
SYNTHETIC aperture radar, SYNTHETIC apertures, FOREST reserves, OPTICAL images, NATIONAL parks & reserves, CLASSIFICATION, RADAR
Abstract

Copyright of Forest Engineering is the property of Forest Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2020

11. Scene Classification of Remote Sensing Images Based on Integrated Convolutional Neural Networks

Author

张晓男 Zhang Xiaonan, 张作省 Zhang Zuoxing, 李竺强 Li Zhuqiang, 钟兴 Zhong Xing, 鲍松泽 Bao Songze, 朱瑞飞 Zhu Ruifei, and 高放 Gao Fang

Subjects
business.industry, Computer science, Remote sensing (archaeology), Computer vision, Artificial intelligence, business, Convolutional neural network, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
Published
2018

14. Thermal barrier effect analysis of magnesium-fluoride conformal dome and the experimental validation

Author

虞林瑶 Yu Lin-yao, 王超 Wang Chao, 魏群 Wei Qun, 朱瑞飞 Zhu Ruifei, and 张天翼 Zhang Tian-yi

Subjects
Magnesium fluoride, Materials science, Effect analysis, Aerospace Engineering, Conformal map, Experimental validation, Atomic and Molecular Physics, and Optics, Thermal barrier coating, chemistry.chemical_compound, Dome (geology), chemistry, Space and Planetary Science, Geotechnical engineering, Electrical and Electronic Engineering
Published
2016

18. Super Compact Optical System Design Based On Single Lens

Author

虞林瑶 Yu Linyao, 谢京江 Xie Jingjiang, 魏群 Wei Qun, 张天翼 Zhang Tianyi, 王超 Wang Chao, 朱瑞飞 Zhu Ruifei, and 贾宏光 Jia Hongguang

Subjects
Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
Published
2015

22. Boresight Error Analysis and Correction of Conformal Infrared Seeker

Author

贾宏光 Jia Hong-guang, 张天翼 Zhang Tian-yi, 王超 Wang Chao, 魏群 Wei Qun, 朱瑞飞 Zhu Ruifei, 姜湖海 Jiang Hu-hai, and 虞林瑶 Yu Lin-yao

Subjects
Optics, Error analysis, business.industry, Infrared, Computer science, Conformal map, business, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Remote sensing
Published
2013

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