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CORC

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The Long-Term Performance Analysis and Comparison of BDS on-Board Atomic Clock Based on Precise Clock Products of IGS Analysis Centers 会议论文
9th China Satellite Navigation Conference (CSNC) - Location, Time of Augmentation, MAY 23-25, 2018
作者:  Xue, Huijie;  Xu, Tianhe;  Ai, Qingsong;  Wang, Shengchao
收藏  |  浏览/下载：6/0  |  提交时间：2019/12/31
Time-Frequency System Builds and Timing Strategy Research of VHF Band Antenna Array 会议论文
作者:  Liu JQ(刘俊卿);  Dong L(董亮);  Wang M(汪敏);  Guo SJ(郭少杰)
收藏  |  浏览/下载：17/0  |  提交时间：2017/01/03
Integrated navigation based on pulsar in libration point orbit 会议论文
6th IEEE Chinese Guidance, Navigation and Control Conference, CGNCC 2014, Yantai, China, August 8, 2014 - August 10, 2014
作者:  Yang, Chengwei;  Zheng, Jianhua;  Li, Mingtao;  Gao, Dong
收藏  |  浏览/下载：18/0  |  提交时间：2015/09/28
Mixed time synchronization method for industrial Wireless Control Networks 会议论文
2015 IEEE International Conference on Cyber Technology in Automation, Control, and Intelligent Systems (CYBER), Shenyang, China, June 8-12, 2015
作者:  Wang ZW(王照伟);  Zeng P(曾鹏);  Zheng M(郑萌);  Li D(李栋)
收藏  |  浏览/下载：20/0  |  提交时间：2016/03/12
Advances in the atomic fountain clock at SIOM 会议论文
joint conference of the ieee international frequency control symposium / european frequency and time forum (fcs)
作者:  Du, Yuanbo;  Wei, Rong;  Dong, Richang;  Zou, Fan;  Wang, Yuzhu
收藏  |  浏览/下载：13/0  |  提交时间：2016/11/28
The Method of Time Synchronization Based on the Combination of COMPASS GEO Pseudo-range and Two-way data 会议论文
5th Joint Conference of the 65th IEEE International Frequency Control Symposium/25th European Frequency and Time Forum, San Fransisco, CA, MAY 01-05, 2011
Yang, Xuhai; Ma, Langming; Sun, Baoqi; Lei, Hui; Sun, Le; Li, Zhigang; Zhou, Wei
收藏  |  浏览/下载：14/0  |  提交时间：2012/11/01
Design and Analysis of Nanosecond Time Synchronization System of Each Station of Each Chain of Chinese LORAN-C 会议论文
22nd International Technical Meeting of the Satellite Division of the Institute-of-Navigation (ION GNSS-09), Savannah, GA, SEP 22-25, 2009
Ma Hong-Jiao; Hu Yong-Hui; Zou De-cai; Wu Jian-Feng; He Zai-Ming
收藏  |  浏览/下载：11/0  |  提交时间：2012/11/01
Analysis of the timing system error of the constellation automatic navigation 会议论文
Joint IEEE International Frequency Control Symposium/21st European Frequency and Time Forum, Geneva, SWITZERLAND, MAY 29-JUN 01, 2007
Lu Xiaochun; Wu Haitao; Li Xiaohui; Chen Xiaozhong
收藏  |  浏览/下载：9/0  |  提交时间：2012/11/01
A new spaceborne compression approach for remote sensing imagery (EI CONFERENCE) 会议论文
ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China
Xu X.; Dong G.; Feng Y.; Xu S.
收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25
After analyzing advantages and disadvantages of these typical encoding methods: SPIHT and VQ  a "DWT+MRLE" approach for spaceborne data compression was proposed in this paper. This approach includes two steps: Discrete Wavelet Transform (DWT) and Modified Run Length Encoding (MRLE). The former used CDF9/7 biorthogonal wavelet filters to powerfully get rid of correlation between pixels in imagery. The later put enlightening information into the lowest bit of some key-position transform coefficients. Consequently  CDF9/7 and MRLE together make hardware platform remain high real-time capability  and help reconstructed images keep good fidelity with PSNR being about 40dB  compared with the original ones. Comparison between experimentations on SPOT4's low-spatial-resolution (10m) imagery and Ikonos2's high-spatial-resolution (1m) imagery  shows this "DWT+MRLE" method having better performance for remote-sensed imagery  especially those of higher resolution. Although inferior to 8:1  Compression Ration (CR) here near 5:1 is greater than France SPOT5's 3:1 and American Ikonos2's 11:2.6 on-board data compression. More important  this method having less computational amount is good for spaceborne capability of real time. The consumed time of different image size is also presented in this paper  based on TI TMSC6416 DSP chip with 600MHz CPU cycle clock.  
A comparotive study of GPS P3 and GPS L3 会议论文
IEEE International Frequency Control Symposium and Exposition, Vancouver, CANADA, AUG 29-31, 2005
Li, Gun; Li, Bian; Dong, Shao-Wu
收藏  |  浏览/下载：6/0  |  提交时间：2012/11/01

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