采样方法

• Those wishing to have their water samples examined at the twd must follow the correct sampling procedure refer to the twd website - water quality - the high quality of tap water , or contact our customer service center for detailed information to avoid incorrect results or judgments . frequently asked questions on water quality
  自行送样检验者，请务必依正确的采样方法详本处网站-水质专区-用户检验须知，或洽询客服中心采集水样，以免检验结果失真，导致误判。
• One new method that the uwb signal can be received ambiguously has been presented in this dissertation . furthermore , the sampling lfm signal becomes two sine signals with different frequencies based on two different delay processes . based on fft and remainder algorithm , the modulation rate and initial frequency of sub - sampling lfm signal are estimated precisely and unambiguously in negative snr
  该方法通过在数字域对信号进行两路不同的延时和余数定理实现欠采样条件下超宽带线性调频信号的调制斜率和初始频率的无模糊估计,在不降低参数估计精度的前提下,解决了欠采样方法引起硬件复杂度增加的问题。
• The text used cs5460 chip as main chip of measurement scheme , found a new date sampling way . when designed the hardware , we improved measure precision at the same time reduced hardware circuit . when designed software , we used meg8 as process chip , measure the power , voltage and current fast and exactly
  在对功率测量和低压启动两个功能模块设计时，针对原有的测量方案，本文采用了以cs5460功率芯片为主芯片的测量方案，提出一种新的数据采样方法，在硬件设计上，以提高精度为目的同时还精简了原硬件电路； ，对功率，电压，电流进行准确而快速的测量，通过重新设计提高了其测量的精度和实时性。
• Particle filter algorithm is main content of this paper , which can be implemented by a bayesian recursion process though a monte carlo simulation method . through analysis of the basic theoretic for particle filter algorithm and study on remaining problems of the algorithm , we discuss approximate optimal importance density function particle filter and evolutive particle filter , analyze the advantage and disadvantage of the above two filters , and eventually propose a particle filter algorithm based on new sample method . the simulation result shows that the new particle filter algorithm can solve non - gaussian maneuver targeting tracking problem primely
  本文通过对粒子滤波算法基本理论的分析和对该算法存在的问题的研究,详细阐述了(近似)最优重要性密度函数粒子滤波算法和进化粒子滤波算法,分析了上述两种滤波方法的优缺点,并于最后通过对粒子滤波算法所存在的粒子数匮乏和粒子多样性丧失问题的分析以及鉴于减少运算量和满足实时性的考虑,提出了一种基于新的采样方法的粒子滤波算法,并应用到弹道导弹目标跟踪。
• Moreover , its interior pll circuit substitutes traditional pll . as a result , the presented design not only overcomes some shortcoming of traditional circuit such as tracking speed and accuracy , but also gets rid of response lag time and multi - phase noise . the system design is also important to improve our country ' s fault diagnosis standard
  而该系统内部锁相电路代替了传统方法中的pll ，因此，提出此系统设计不仅能够克服基于传统锁相环电路的等转角采样方法跟踪精度低、速度慢和使用不便等特点，还能克服电路中的由于不可避免的响应延迟时间所导致的不适合快速的列车运行及过多的相位噪声问题，对于推动我国铁路故障在线诊断技术的应用普及具有重要意义。
• The huge advantage of the technology have poured into new vigor for our monitoring work in data acquisition , signal processing , network communication etc . the paper improved the power quality monitoring system based on existing research accomplishment . such as using the buffered sampling method ; increasing the function of flick measurement ; expanding the number of the monitoring loops
  本文在已有研究成果的基础上对电能质量监测系统进行了改进和完善，如使用了基于缓存的采样方法、新增了闪变值测量功能、扩展了监测回路数目等。
• The operation principle of boost pfc converter was analyzed ; and the emulation model of boost pfc module under the average current control was set up . a novel method to sample synthetically the input current and output current was put forward in the text . this can realize the current sampling for the control of pfc and current sharing at the same time
  分析了boostpfc变换器的工作原理，建立了基于平均电流控制的boostpfc模块的仿真模型；提出了一种新颖的输入输出电流综合采样方法，可同时实现pfc控制和均流控制的电流采样；建立了并联系统的仿真模型；研究设计了基于平均电流法的并联控制方案及实现电路。
• Three kinds of discrete models of pwm dc / dc converter are deduced from sample - data method . then a complete chaotic dynamics modeling method is proposed based on float genetic arithmetic and sample - data method . nonlinear phenomena in a buck converter and a zeta converter are analyzed with the modeling method
  利用数据采样方法推导了pwm型dc / dc变换器的三种采样方法的离散模型，然后在遗传算法和数据采样方法基础上提出了一套完整的pwm型dc / dc变换器混沌动力学建模方法，并利用这种方法分析了buck变换器和zeta变换器中的非线性现象。
• This method arranges sampling data set on the rough geometry model , then takes adaptive resampling to decrease the data amounts . furthermore it could correct large distortion in depth , and make use of arbitrary movement bound for viewer . this method can be widely applied in walkthrough systems
  这一方法利用场景的粗略几何信息组织采样数据，利用自适应的重采样方法降低了总体数据量，并且纠正了较大的深度变形，同时去除了对漫游范围的形状限制，可以应用于更广泛的场景漫游系统。