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浏览/检索结果: 共17条，第1-10条 帮助

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Analysis and Assessment of BDS-2 and BDS-3 Broadcast Ephemeris: Accuracy, the Datum of Broadcast Clocks and Its Impact on Single Point Positioning 期刊论文  OAI收割
REMOTE SENSING, 2020, 卷号: 12, 期号: 13, 页码: 24
作者:  Jiao, Guoqiang;  Song, Shuli;  Liu, Yangyang;  Su, Ke;  Cheng, Na
  |  收藏  |  浏览/下载：34/0  |  提交时间：2020/08/31
The update of BDS-2 TGD and its impact on positioning 期刊论文  OAI收割
ADVANCES IN SPACE RESEARCH, 2020, 卷号: 65, 期号: 11, 页码: 2645-2661
作者:  Zhang, Yize;  Chen, Junping;  Gong, Xiuqiang;  Chen, Qian
  |  收藏  |  浏览/下载：34/0  |  提交时间：2021/12/06
Evaluation of Signal-in-Space Continuity and Availability for BeiDou Satellite Considering Failures 期刊论文  OAI收割
JOURNAL OF NAVIGATION, 2020, 卷号: 73, 期号: 2, 页码: 312-323
作者:  Fan, Lihong;  Tu, Rui;  Zheng, Zengji;  Zhang, Rui;  Lu, Xiaochun
  |  收藏  |  浏览/下载：21/0  |  提交时间：2020/11/10
Calibration and Impact of BeiDou Satellite-Dependent Timing Group Delay Bias 期刊论文  OAI收割
REMOTE SENSING, 2020, 卷号: 12, 期号: 1, 页码: 17
作者:  Zhang, Yize;  Wang, Hu;  Chen, Junping;  Wang, Ahao;  Meng, Lingdong
  |  收藏  |  浏览/下载：38/0  |  提交时间：2021/09/26
GPS III首星空间信号质量监测评估 期刊论文  OAI收割
电子学报, 2020, 卷号: 48, 期号: 2, 页码: 407
作者:  饶永南;  王萌;  康立;  杨德进;  卢晓春
  |  收藏  |  浏览/下载：28/0  |  提交时间：2021/11/29
Apparent clock and TGD biases between BDS-2 and BDS-3 期刊论文  OAI收割
GPS SOLUTIONS, 2019, 卷号: 24, 期号: 1, 页码: 15
作者:  Zhang, Yize;  Kubo, Nobuaki;  Chen, Junping;  Chu, Feng-Yu;  Wang, Ahao
  |  收藏  |  浏览/下载：73/0  |  提交时间：2021/09/26
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：37/0  |  提交时间：2020/11/09
Real-time BDS signal-in-space anomaly detection method considering receiver anomalies 期刊论文  OAI收割
IET RADAR SONAR AND NAVIGATION, 2019, 卷号: 13, 期号: 12, 页码: 2220-2229
作者:  Fan, Lihong;  Tu, Rui;  Zhang, Rui;  Zheng, Zengji;  Liu, Jinhai
  |  收藏  |  浏览/下载：33/0  |  提交时间：2021/11/29
Simulation test system of CCD signal processor based on FPGA (EI CONFERENCE) 会议论文  OAI收割
2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012, December 8, 2012 - December 9, 2012, Taiwan
作者:  Zhang D.;  Liu D.-B.;  Zhang D.
收藏  |  浏览/下载：33/0  |  提交时间：2013/03/25
Simulation test system of CCD signal processor based on FPGA is proposed. Field-programmable gate array (FPGA) is applied as control processing core and used in the aerospace upgrade screening of industrial grade signal processor. The system functional composition and working principle were introduced in detail. Actually evaluation and testing system was completed with integrating the forty signal processor in a single board. The system has been successfully applied in the dynamic build-in screening test of industrial grade signal processor XRD98L63  the system work stably and reliability. Test result is zero on the nonconforming product rate  satisfying the qualification that single batch screening nonconforming rate is less than 5%  build-in screening of industrial grade components for the space load applications is implemented. (2013) Trans Tech Publications  Switzerland.  
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：30/0  |  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.