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	An improved method for detecting BeiDou signal-in-space anomalies from precise ephemerides 期刊论文 OAI收割 ACTA GEODAETICA ET GEOPHYSICA, 2019, 卷号: 54, 期号: 4, 页码: 567-581 作者: Fan, Lihong; Tu, Rui; Zhang, Rui; Zheng, Zengji; Lu, Xiaochun \| 收藏 \| 浏览/下载：41/0 \| 提交时间：2020/11/09 BeiDou Signal-in-space anomaly Anomaly detection Clock anomaly Orbit anomaly
	Miniaturization of physics system in Sr optical clock 期刊论文 OAI收割 ACTA PHYSICA SINICA, 2018, 卷号: 67, 期号: 5, 页码: 8 作者: Zhao Fang-Jing; Gao Feng; Han Jian-Xin; Zhou Chi-Hua; Meng Jun-Wei \| 收藏 \| 浏览/下载：16/0 \| 提交时间：2021/11/29 compact Sr optical clock built-in anti-Helmholtz coil space-borne cold atom optical clock
	Physical layer design for free space optical communication (EI CONFERENCE) 会议论文 OAI收割 2012 International Conference on Control Engineering and Communication Technology, ICCECT 2012, December 7, 2012 - December 9, 2012, Shenyang, Liaoning, China 作者: Wang H.; Zhang Q.; Guo J.; Guo J.; Wang H. 收藏 \| 浏览/下载：33/0 \| 提交时间：2013/03/25 A small size Free Space Optical Communication System is introduced including the hardware and the hardware specified physical layer protocol. In detail the rapid synchronization method to reduce the handshake bandwidth requirement is demonstrated. The hardware of the system includes the laser driver system the signal amplifying and shaping system the data interface system. The hardware specified physical layer protocol is used to interface the outer data serialize and deserialize the data stream check transmission errors and schedule the data transmission. The overall system is a FIFO-like system and the user can use it as if he's operating a FIFO. The system is designed mainly for terrestrial FSO link whose signal channel is the atmosphere. Due to the complex composition and activity of the atmosphere this signal channel brings in great influence on the transmitting laser in it for example the absorption and scattering of the atmosphere molecules and aerosols the scintillation of received laser power caused by the turbulence of the atmosphere all of which results in a much higher Bit Error Rate (BER) of the communication system than wired communication systems leading to frequent resynchronization. In our system the sampling clock is generated locally using multi-phase sampling technique rather than PLLbased clock recovery which helps to rapid synchronization. 2012 IEEE.
	An improved fast parallel SPIHT algorithm and its FPGA implementation (EI CONFERENCE) 会议论文 OAI收割 2010 2nd International Conference on Future Computer and Communication, ICFCC 2010, May 21, 2010 - May 24, 2010, Wuhan, China 作者: Jin L.-X.; Tao H.-J.; Wu Y.-H. 收藏 \| 浏览/下载：27/0 \| 提交时间：2013/03/25 In view of the current stringent need to the real-time compression algorithm of the high-speed and high-resolution image such as remote sensing or medical image and so on in this paper No List SPIHT (NLS) algorithm has been improved and a fast parallel SPIHT algorithm is proposed which is suitable to implement with FPGA. It can deal with all bit-planes simultaneously and process in the speed of 4pixels/period so the encoding time is only relative to the image resolution. The experimental results show that the processing capacity can achieve 200MPixels/s when the input clock is 50MHz the system of this paper need 2.29ms to complete lossless compression of a 512x512x8bit image and only requires 1.31ms in the optimal state. The improved algorithm keeps the high SNR unchanged increases the speed greatly and reduces the size of the needed storage space. It can implement lossless or lossy compression and the compression ratio can be controlled. It could be widely used in the field of the high-speed and high-resolution image compression. 2010 IEEE.
	Photon counting module for laser time transfer via Earth orbiting satellite 期刊论文 OAI收割 JOURNAL OF MODERN OPTICS, 2009, 卷号: 56, 期号: 2-3, 页码: 253-260 作者: Prochazka, Ivan; Yang, Fumin 收藏 \| 浏览/下载：31/0 \| 提交时间：2015/08/18 solid state photon counting satellite laser ranging clock in space synchronizing clocks