selection signal

The instable signal is abnegated and the steady signal is intercrossed for improving the precision through constructing adaptive function and the process of genetic selection.

通过构建适应度函数，根据信号适应度函数进行遗传选择，舍弃不稳定信号，对有用信号进行杂交，从而获得较高的定向精度。

Then build a model of single and three-phase hybrid distribution system based on MATLAB, and research the case of line selection and the method of fixing fault segment with DC signal and fault position with AC signal by simulation.

基于MATLAB搭建了单三相混合配电系统模型，对接地选线情况和直流定段、交流定点方法做仿真研究。

Fault feature subset selection is the analysis and treatment of the information which comes from the pretreatment dynamic signal, then select the data related to the system status, and handle and diagnose the data next to extract the sensitive parameters related to the system status closely.

故障特征提取就是对系统的动态信号预处理后得到的信息进行分析和处理，提取与系统状态有关的数据，再对得到的数据进行处理和分析，提取其中与系统状态相关性较大的敏感特征。

The process of transmitting selection signal in order to establish a connection between data stations.

发送选择信号以便在数据站之间建立连接的过程.

The second circuit is supplied with electricity by a second power cord and receives a character line selection signal of the corresponding character line.

一第二电路，受一第二电源线供电，用以接收对应该字符线的一字符线选择信号；

With appropriate wavelength selection, the contents of components in compound metronidazole tablets may be determined by signal multiplier spectrophotometry and the new solution of simultaneous equations in spectrophotometry without any preliminary separation.

文章经选择适当的测定波长，同时采用系数倍率法和联立方程组新解法不经提取分离直接测定复方甲硝唑片中甲硝唑和维生素B6的含量。

Described are the advantages to apply the electro pneumatic braking instructions, selection of electro pneumatic braking instruction signal modes and parameters in the through transmission, interpretation schemes by BCU, measures to prevent interference and two schemes for the long distance transmission circuit.

介绍采用电空制动指令的优点，直通传输方式中电空制动指令信号形式及其参数的选择，BCU对其进行解译的方案和抑制干扰的措施及2种长距离传输电路方案。

It also offers qualitative comparison of wavelet base selection for vibration signal character abstracting.

对于振动信号特征提取中的小波基比较和选择文中给出了定性的比较.

The selection of the optimal threshold of signal detection.

信号检测的最佳门限选择；

Secondly, it introduces the frequency selection, EMC ( Electromagnetic Compatibility), the basic generation theory and modulation of the third civil signal ( L5 signal), including LS ranging code, Forward Error Correction, QPSK modulation and Neuman.

其次，介绍了其信号的频段选择、电磁兼容性及其调制和产生的基本原理，包括L5测距码、卷积码、QPSK调制以及Neuman。

Based on orthogonal space-time coding and the F-2 norm of received signal vector, a non-coherent antenna selection algorithm, which does not require to estimate channel parameters, is presented in this paper.

基于正交空时编码和接收信号向量的范数，提出了非相干的天线选择算法（NON-AS），不需要估计信道，并将算法应用于差分空时系统。

The sequential controller, which has four operation modes such as single selection, odd number, even number, and all selection, can be used for single pulse CARS test, realizing time-resolved spectrum, reducing noise and improving signal-to-noise ratio of CARS system.

可以选择采集同步发射的激光信号。其有单选、奇数、偶数、全选四种工作模式，可应用于单脉冲CARS实验，实现时间分辨光谱，同时还可以降低噪音，提高信噪比。