For the feedforward controller design , zero error characteristic of the step response of system with zero phase error tracking controller ( zpetc ) is proved and its application is studied 对于前馈控制器设计，证明了零相位误差跟踪算法在阶跃输入下的无差性并研究了该特性的应用。
Secondly , considering the problem of phase error of the single probe system , the paper introduces zero phase filter and designs zero phase filters after analyzes its principle 第二，针对内螺纹单针测量系统中的数字滤波失真，提出了零相位数字滤波，分析了其原理，并设计了一阶零相位数字滤波器和高阶零相位数字滤波器。
30mhz measurement of quartz crystal unit parameters by zero phase technique in a - network ; part 4 : method for the measurement of the load resonance frequency fl load resonance resistance rl and the calculation of other derived values of quartz crystal units , up to 30 mhz 用型网络的零相位技术测量石英谐振器参数.第4部分:石英晶体元件负荷谐振频率fl负荷谐振电阻rl的测量方法,以及石英晶体元件其他导出值的计算方法
30 mhz measurement of quartz crystal unit parameters by zero phase technique in a pi - network - part 4 : method for the measurement of the load resonance frequency fl , load resonance resistance rl and the calculation of other derived values of quartz crystal units , up to 30 mhz 用型网络的零相位法测量石英晶体元件参数.第4部分:石英晶体单元负荷谐振频率fl负荷谐振电阻rl的测量方法及其他石英晶体元件导出值的计算方法
Measurement of quartz crystal unit parameters by zero phase technique in a - network ; part 3 : basic method for the measurement of two - terminal parameters of quartz crystal units up to 200 mhz by phase technique in a w - network with compensation of the parallel capacitance c 在型网络中用零相位技术测量石英晶体单元参数.第3部分:在具有并联电容c补偿的w型网络中用相位技术测量频率200mhz及以下石英晶体单元的二端参数的基本方法
Measurement of quartz crystal unit parameters by zero phase technique in a pi - network - part 3 : basic method for the measurement of two - terminal parameters of quartz crystal units up to 200 mhz by phase technique in a pi - network with compensation of the parallel capacitance c0 用型网络的零相位技术测量石英晶体器件参数.第3部分:用并联电容co补偿的网络零相位技术测量最高可达200 mhz的石英晶体器件谐振器两端参数的基本方法
In order to encode the parameters of sinusoidal model , the vector quantization techniques for amplitude parameters and the differential quantization for frequency parameters are proposed and discussed . at the same time , the frequency bin model , the random phase model and the zero phase model are also discussed 针对正弦模型参数的量化编码，提出了幅度参数矢量量化、频率参数差分量化等方法，并探讨了频率盒量化模型以及随机相位和零相位模型等。
The research results are controlled source which has linear or nonlinear variabe frequency scan function and the seismic instruments which match with it , and the method of small group intervals , small offset , much more channels , short array length , high - frequency receivers are applied during the link of data acquisition , and that the techniques of the refraction static correction , the noise suppressing , the high - resolution velocity analysis , the wavelet length compression , the wavelet zero - phase , and the prestack migration should be applied emphasizedly during the link of data processing and interpretation 研究表明，对于城市活断层的抗干扰高分辨率浅层地震勘探，在数据采集环节应采用具有线性或非线性变频扫描功能的可控震源和与其相匹配的地震仪器，以及小道间距、小偏移距、多接收道、短排列和高频检波器接收的工作方法；在数据处理与解释环节，要重视折射静校正技术、噪声压制技术、高精度速度分析技术、子波压缩技术、子波零相位化技术和叠前偏移技术等的应用。
