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Research on Image Motion Compensation Technology of Aerial Camera with Fast Sweeping 会议论文
Virtual, Online, China, 2022-01-14
作者:  Chen, Weining;  Cheng, Gong;  Yang, Hongtao;  Chang, Sansan;  Peng, Jianwei
收藏  |  浏览/下载：16/0  |  提交时间：2022/07/14
PHOTOACOUSTIC CAVITATION OF NANODROPLETS: HIGH SPEED OBSERVATION AND ACOUSTIC SIGNAL ANALYSIS 会议论文
作者:  Feng, Yi;  Qin, Dui;  Zhang, Lei;  Wan, Mingxi
收藏  |  浏览/下载：3/0  |  提交时间：2019/11/26
Optical and acoustic study on phase transition of nanodroplets: acoustic droplet vaporization versus photoacoustic cavitation 会议论文
作者:  Feng, Yi;  Qin, Dui;  Zhang, Lei;  Zong, Yujin;  Wan, Mingxi
收藏  |  浏览/下载：2/0  |  提交时间：2019/11/26
Real-time micro-vibration multi-spot synchronous measurement within a region based on heterodyne interference 会议论文
2017 INTERNATIONAL CONFERENCE ON OPTICAL INSTRUMENTS AND TECHNOLOGY - OPTOELECTRONIC MEASUREMENT TECHNOLOGY AND SYSTEMS, 2017-01-01
作者:  Ma, Lan;  Xiao, Wen;  Chen, Zonghui;  Hao, Hongliang;  Pan, Feng
收藏  |  浏览/下载：4/0  |  提交时间：2019/12/30
Synchronous High-Speed Multi-point Velocity Profile Measurement by Heterodyne Interferometry 会议论文
International Conference on Optical and Photonics Engineering (icOPEN), Chengdu, PEOPLES R CHINA, 2016-09-26
作者:  Hou, Xueqin;  Xiao, Wen;  Chen, Zonghui;  Qin, Xiaodong;  Pan, Feng
收藏  |  浏览/下载：10/0  |  提交时间：2019/12/30
Optic and Acoustic detection of laser-induced optical breakdown in DDFP 会议论文
作者:  Feng, Yi;  Qin, Dui;  Ma, Cheng-Xiang;  Zong, Yu-Jin;  Wan, Ming-Xi
收藏  |  浏览/下载：8/0  |  提交时间：2019/12/03
EFFECTS OF SLEEVE DIVERGENCE ANGLE OF DUAL-STAGE SWIRL CUP ON THE IGNITION PERFORMANCE 会议论文
PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2014, VOL 4A, 2014-01-01
作者:  Kang, Yao;  Lin, Yuzhen;  Wang, Xiaofeng;  Zhang, Chi;  Song, Shuangwen
收藏  |  浏览/下载：4/0  |  提交时间：2020/01/06
Research on image restoration of Roll-Swing imaging seeker (EI CONFERENCE) 会议论文
3rd IEEE International Conference on Advanced Computer Control, ICACC 2011, January 18, 2011 - January 20, 2011, Harbin, China
Bai Y.; Zhang H.; Han X.; Wei Q.; Jia H.; Guo L.
收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25
To achieve a correct image receiving for Roll-Swing imaging seeker  the mechanism and imaging process is analyzed. The causes of image rotation are discussed. The influence of the frame encoders' precision on imaging de-rotation quality is analyzed. The Roll-Swing imaging seeker is designed for high-speed aerocraft  thus the received images are greatly degraded due to atmospheric turbulence. A new method of image restoration is proposed for turbulence-degraded images in this paper. The method is to get point spread function (PSF) based on the estimation of optical transfer function (OTF) according to the optical system design simulation. Finally  to obtain the restored image  constrained least squares filtering is used with the known PSF. The experiment results indicate that the new restoration method has a favorable effect to satisfy requirement of the automatic target recognition. 2011 IEEE.  
A disk-pivot structure micro piezoelectric actuator using vibration mode B-11 会议论文
ULTRASONICS, Ultrasonics International (UI 05)/ World Congress on Ultrasonics (WCU 2005), Beijing, PEOPLES R CHINA, Web of Science
Chu, Xiangcheng; Ma, Long; Li, Longtu
收藏  |  浏览/下载：3/0
High precision test method for dynamic imaging of space camera (EI CONFERENCE) 会议论文
2010 IEEE International Conference on Advanced Computer Control, ICACC 2010, March 27, 2010 - March 29, 2010, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Zheng G.-F.; Ma S.-F.; Sun J.-G.; Jin L.-X.; Zhang K.
收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25
A test method for dynamic imaging of space TDICCD (Time Delay and Integration Charge Coupled Devices) camera was presented in this paper. The test method adopted the PLL (Phase Locked Loop) technology and CMAC (Cerebella Model Articulation Controller) friction compensation as control strategy. Furthermore  According to this method  a test system for dynamic imaging of space TDICCD camera was designed and implemented. The system simulated the movement of the ground objects relative to the space aerocraft  to validate the capability of image speed match and the dynamic imaging quality of TDICCD camera. The design adopted a precision turntable and a drift turntable to simulate the movement around the earth and the drift motion in different latitude due to the rotation of earth  of the aerocraft. The turntables were drived by permanent magnet torque motor which was powered by PWM (Pulse Width Modulation). The system adopted DSP (Digital Signal Processor) as the control core and reached a very high performance. The experimental results showed that the steady speed error was better than 0.01 % and the instantaneous speed error reached 0.0267%. The precision of the test system designed met the requirement for dynamic imaging of TDICCD camera. 2010 IEEE.  

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