3篇
您的检索式：作者名="Ruiyao Niu"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Generation method of GPS L1C codes based on quadratic reciprocity law显示文摘A new code concept is used for the L1 civil(L1C) signal of the global positioning system(GPS).The generation of L1C codes is quite different from the generation of traditional ranging codes.Thus,it is necessary to find a method for the correct generation to pave the way for future research.L1C codes are based on only one Legendre sequence which consists of Legendre symbols.To calculate these Legendre symbols,the Euler criterion is always used to evaluate quadratic residues.However,due to the great length of L1C codes,this procedure causes overflow problems.Therefore,the quadratic reciprocity law,some related theorems and properties are introduced to solve the problems.Moreover,if the quadratic reciprocity law,some related theorems and properties are used to calculate different Legendre symbols,the combination modes may vary,which causes a complex generation process.The proposed generation method deals with this complex generation process effectively.In addition,through simulations,it is found that the autocorrelation features of obtained Legendre sequences and L1C codes are in accordance with theoretical results,which proves the correctness of the proposed method. | Hui Lu Ruiyao Niu | 2013 | Journal of Systems Engineering and Electronics2013，24，2： | 2 |
| 2 | Constraint-Guided Methods with Evolutionary Algorithm for the Automatic Test Task Scheduling Problem显示文摘The automatic test task scheduling problem is a key challenge for automatic test system to improve throughput and reduce test time. The constrained Test task scheduling problem(TTSP) contains network precedence constraint relationships between tasks. Constrained optimization and topological sorting are applied to handle the constraints. A chaotic non-dominated sorting genetic algorithm is used to stress exploitation ability and obtain high quality solutions. For two commonly applied realworld instances, comparisons show that topological sorting performs much better than constrained optimization and some existing algorithms. Simulation results demonstrate the effectiveness of CNSGA combined with topological sorting for solving constrained TTSP with multiobjectives. | LU Hui NIU Ruiyao | 2014 | Chinese Journal of Electronics2014，23，3： | 1 |
| 3 | Interactions between rare earths and 3,5,3'-triiodothyronine (T_3)显示文摘WHILE rare earths are being used in agriculture, medicine and materials, they are being | WANG Ruiyao, GAO Feng, NIU Chunji, YANG Kuiyue, Nl Jiazuan, JIN Tianzhu and WANG Xiangyun Laboratory of Rare Earths Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, China | 1997 | Chinese Science Bulletin1997，42，17： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员