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基于预解共轭梯度的相位解缠算法研究 被引量:1
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作者 张健 彭军还 杨红磊 《测绘通报》 CSCD 北大核心 2012年第5期14-16,28,共4页
用Matlab实现无权和加权的两种最小二乘相位解缠的算法。采用仿真及真实数据,通过定性和定量的方法比较分析这两种算法。试验结果表明,预解共轭梯度最小二乘相位解缠算法在噪声相位可以取得较好的解缠效果。
关键词 相位 数字高程模型 最小二乘 预解共轭梯度
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An Integrated Tool for Power/Ground Network Design, Optimization,and Verification for Cell Based VLSIs
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作者 傅静静 武晓海 +1 位作者 洪先龙 蔡懿慈 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2003年第3期266-273,共8页
A CAD tool based on a group of efficient algorithms to verify,design,and optimize power/ground networks for standard cell model is presented.Nonlinear programming techniques,branch and bound algorithms and incomplete ... A CAD tool based on a group of efficient algorithms to verify,design,and optimize power/ground networks for standard cell model is presented.Nonlinear programming techniques,branch and bound algorithms and incomplete Cholesky decomposition conjugate gradient method (ICCG) are the three main parts of our work.Users can choose nonlinear programming method or branch and bound algorithm to satisfy their different requirements of precision and speed.The experimental results prove that the algorithms can run very fast with lower wiring resources consumption.As a result,the CAD tool based on these algorithms is able to cope with large-scale circuits. 展开更多
关键词 VLSI power/ground network nonlinear programming techniques ICCG branch and bound CAD tool
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