中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Compressed Coding, AMP-Based Decoding, and Analog Spatial Coupling 期刊论文  OAI收割
IEEE TRANSACTIONS ON COMMUNICATIONS, 2020, 卷号: 68, 期号: 12, 页码: 7362-7375
作者:  
Liang, Shansuo;  Liang, Chulong;  Ma, Junjie;  Ping, Li
  |  收藏  |  浏览/下载:127/0  |  提交时间:2021/04/26
Aircraft orientation error correction based on image aided navigation paper (EI CONFERENCE) 会议论文  OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Tao Z.; Yang L.-M.
收藏  |  浏览/下载:23/0  |  提交时间:2013/03/25
In allusion to the character of aircraft orientation error in inertial navigation system increasing with its working time and error accumulation  airborne image aided navigation system is imported in inertial navigation system to combine integrated navigation system. To acquire high orientation accuracy and high matching speed a new algorithm based on multi-scale edge detection and generalized point theory is put forward. At first multi-scale edge detection algorithm is adopted to realize airborne image edge detection  then image matching algorithm is used based on generalized point theory is used to eliminate error accumulation of peg-top excursion and accelerometer error to correction aircraft aircraft pose error to increase navigation accuracy of aircraft. To prove the algorithm is effective and robust  simulative experiment is done. The simulative experiment indicated that aircraft orientation accuracy is better than inertial navigation system  and its orientation error is less than 15 meters after airborne image aided navigation correction. 2010 IEEE.  
adaptive voice stream multicast over low-power wireless networks 会议论文  OAI收割
31st IEEE Real-Time Systems Symposium, RTSS 2010, San Diego, CA, 40850
Liqun Li; Guoliang Xing; Qi Han; Limin Sun
收藏  |  浏览/下载:28/0  |  提交时间:2011/03/31
Study of unequal error protection method based on JPEG2000 for surveyingmapping image (EI CONFERENCE) 会议论文  OAI收割
International Conference on Computer Science and Software Engineering, CSSE 2008, December 12, 2008 - December 14, 2008, Wuhan, Hubei, China
Yao Q.; Cao M.
收藏  |  浏览/下载:177/0  |  提交时间:2013/03/25
On aviation mapping  compression image maybe not decode because of wireless transmission interference. UEP(Unequal Error Protection) scheme is put forward about layer and block structure of JPEG2000 image compression method  flexibly enhances local reconfigurable image's quality which is in favor of identifier in the region of interest. 2008 IEEE.  and realizes three degrees UEP of data block  data header  image data via various degrees correction-coding under the condition of obstruct  naked and shade. BCH  RS and Hamming coding are simulated  and image decoding success rate and image's quality are analyzed according to different coding and ROI (Region of Interest) in the Gaussian white noise model and rayleigh fading model. Results shows that the method we putted forward roughly improves decoding success rate  at the same time  almost not increasing bandwidth