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北斗系统QMBOC信号无模糊多径抑制算法研究1 期刊论文  OAI收割
时间频率学报, 2020, 卷号: 43, 期号: 2, 页码: 153
作者:  
王森;  王雪;  霍翔;  饶永南;  陈校非
  |  收藏  |  浏览/下载:47/0  |  提交时间:2021/11/29
Characteristics of mountain glacier surge hazard: learning from a surge event in NE Pamir, China 期刊论文  OAI收割
JOURNAL OF MOUNTAIN SCIENCE, 2019, 卷号: 16, 期号: 7, 页码: 1515-1533
作者:  
Yao, Xin;  Iqbal, Javed;  Li, Ling-jing;  Zhou, Zheng-kai
  |  收藏  |  浏览/下载:84/0  |  提交时间:2019/08/07
Characteristics of mountain glacier surge hazard: learning from a surge event in NE Pamir, China 期刊论文  OAI收割
JOURNAL OF MOUNTAIN SCIENCE, 2019, 卷号: 16, 期号: 7, 页码: 1515-1533
作者:  
Yao, Xin;  Iqbal, Javed;  Li, Ling-jing;  Zhou, Zheng-kai
  |  收藏  |  浏览/下载:22/0  |  提交时间:2020/11/03
InSAR相位重建技术与PSInSAR地表形变监测技术研究 学位论文  OAI收割
博士, 北京: 中国科学院研究生院, 2014
陈润璞
收藏  |  浏览/下载:31/0  |  提交时间:2014/06/10
MONITORING GLACIER SURFACE VELOCITY IN WEST KUNLUN MOUNTAIN USING OFFSET TRACKING METHODS BASED ON ALOS/PALSAR IMAGES 会议论文  OAI收割
2012 Ieee International Geoscience and Remote Sensing Symposium, New York
Ruan, Zhixing; Guo, Huadong; Liu, Guang; Yan, Shiyong
收藏  |  浏览/下载:18/0  |  提交时间:2014/12/07
MOUNTAIN GLACIER MOTION CHANGE DETECTION BY SATELLITE L-BAND SAR DATA 会议论文  OAI收割
2012 Ieee International Geoscience and Remote Sensing Symposium, New York
Zhou, Jianmin; Li, Zhen; Tang, Panpan
收藏  |  浏览/下载:30/0  |  提交时间:2014/12/07
The sequence measurement system of the IR camera (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China
作者:  
Zhang H.-B.;  Han H.-X.;  Geng A.-H.
收藏  |  浏览/下载:35/0  |  提交时间:2013/03/25
Currently  the IR cameras are broadly used in the optic-electronic tracking  optic-electronic measuring  fire control and optic-electronic countermeasure field  but the output sequence of the most presently applied IR cameras in the project is complex and the giving sequence documents from the leave factory are not detailed. Aiming at the requirement that the continuous image transmission and image procession system need the detailed sequence of the IR cameras  the sequence measurement system of the IR camera is designed  and the detailed sequence measurement way of the applied IR camera is carried out. The FPGA programming combined with the SignalTap online observation way has been applied in the sequence measurement system  and the precise sequence of the IR camera's output signal has been achieved  the detailed document of the IR camera has been supplied to the continuous image transmission system  image processing system and etc. The sequence measurement system of the IR camera includes CameraLink input interface part  LVDS input interface part  FPGA part  CameraLink output interface part and etc  thereinto the FPGA part is the key composed part in the sequence measurement system. Both the video signal of the CmaeraLink style and the video signal of LVDS style can be accepted by the sequence measurement system  and because the image processing card and image memory card always use the CameraLink interface as its input interface style  the output signal style of the sequence measurement system has been designed into CameraLink interface. The sequence measurement system does the IR camera's sequence measurement work and meanwhile does the interface transmission work to some cameras. Inside the FPGA of the sequence measurement system  the sequence measurement program  the pixel clock modification  the SignalTap file configuration and the SignalTap online observation has been integrated to realize the precise measurement to the IR camera. Te sequence measurement program written by the verilog language combining the SignalTap tool on line observation can count the line numbers in one frame  pixel numbers in one line and meanwhile account the line offset and row offset of the image. Aiming at the complex sequence of the IR camera's output signal  the sequence measurement system of the IR camera accurately measures the sequence of the project applied camera  supplies the detailed sequence document to the continuous system such as image processing system and image transmission system and gives out the concrete parameters of the fval  lval  pixclk  line offset and row offset. The experiment shows that the sequence measurement system of the IR camera can get the precise sequence measurement result and works stably  laying foundation for the continuous system. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).  
KEKESAYI GLACIER VELOCITY EXTRACTION BASED ON THE OFFSETS DERIVED FROM SAR IMAGES 会议论文  OAI收割
2011 Ieee International Geoscience and Remote Sensing Symposium, New York
Yan, Shiyong; Guo, Huadong; Fu, Wenxue; Liu, Guang; Ruan, Zhixing
收藏  |  浏览/下载:30/0  |  提交时间:2014/12/07
Modeling and analysis of dialyte-lens auto-focusing technology for theodolite (EI CONFERENCE) 会议论文  OAI收割
2008 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Applications, November 16, 2008 - November 19, 2008, Beijing, China
Wu L.-T.; Qiao Y.-F.; Wu D.-K.; Cai S.
收藏  |  浏览/下载:22/0  |  提交时间:2013/03/25
In order to realize real-time auto-focusing for theodolite  lens-apart method was designed with the corresponding math model built and analyzed. An Object beam splitted after the first image surface of the theodolite traveled through two dialyte lens and then was imaged on CCD. The distance between two spots when exactly focused was set as the calibration value  and the relationship between defocus distance and spot offset was given. The influence of tracking center shift and divergence angle etc. on focusing accuracy was analyzed. Compared with the traditional focusing method  this scheme has a higher accuracy  faster calculation  higher tolerance for environment temperature and a simpler construction. The experiment result exhibited a resolution higher than 0.056mm  which shows a bright engineering application prospect for this method. 2009 SPIE.