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FAST望远镜首次发现毫秒脉冲星的jitter模式（图）
FAST 望远镜 毫秒脉冲星 jitter模式
2021/3/3
利用脉冲星计时阵探测纳赫兹引力波是目前天文学领域的热点前沿，理解其中的计时噪声并且提高计时精度会极大提高探测纳赫兹引力波的能力。近日，中国科学院国家天文台博士研究生冯毅及其导师李菂研究员和来自澳大利亚联邦科学与工业研究组织的George Hobbs博士领导的团队，利用FAST发现了脉冲星计时阵中的毫秒脉冲星J1022+1001的jitter噪声(计时噪声的一种)模式，是利用FAST更好理解毫秒脉冲...
Analysis and synthesis of state-feedback controllers with timing jitter
Constant linear linear system status the convex quadratic performance the linear matrix inequality (lmi) and lyapunov function
2015/8/10
We consider a continuous-time linear system with sampled constant linear state-feedback control and a convex quadratic performance measure. The sample times, however, are subject to variation within s...
传统的地震勘探数据采样必须遵循奈奎斯特采样定理,而野外数据采样可能由于地震道缺失或者勘探成本限制,不一定满足采样定理要求,因此存在数据重建问题.本文基于压缩感知理论,利用随机欠采样方法将传统规则欠采样所带来的互相干假频转化成较低幅度的不相干噪声,从而将数据重建问题转为更简单的去噪问题.在数据重建过程中引入凸集投影算法(POCS),提出采用e-√x(0≤x≤1)衰减规律的阈值参数,构建基于曲波变换三...
Timing jitter optimization of mode-locked Yb-fiber lasers toward the attosecond regime
Fluctuations relaxations and noise Ultrafast lasers
2011/8/29
We demonstrate ultra-low timing jitter optical pulse trains from freerunning,80 MHz repetition rate, mode-locked Yb-fiber lasers. Timing jitter of various mode-locking conditions at close-to-zero intr...
Novel Strategy for Numerically Evaluating Dark-Soliton Jitter
in Optical Communications
dark-soliton jitter threshold-value-oriented method
dissipative-dispersive system
2007/8/15
2005Vol.43No.5pp.847-849DOI:
Novel Strategy for Numerically Evaluating Dark-Soliton Jitter
in Optical Communications
CHEN Shi-Hua
Department of Physics, Huazhong Univers...